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SEISMIC VISCOUS DAMPER
MANUFACTURER’S
TECHNICAL QUALIFICATION
SUBMITTED BY:
ENIDINE INCORPORATED
CONFIDENTIALITY
THIS DOCUMENT
CONTAINS CONFIDENTIAL DESIGN AND PRODUCT INFORMATION OWNED BY ENIDINE
INCORPORATED (HEREAFTER REFERRED TO AS “ENIDINE”). IT IS SUBMITTED FOR USE IN EVALUATING THE
PROPOSAL OF WHICH IT IS A PART. NO
OTHER USE, DIRECT OR INDIRECT, AND NO DISSEMINATION OR DISTRIBUTION
(INCLUDING PUBLICATION), DIRECT OR INDIRECT, IS AUTHORIZED, OTHER THAN TO
THOSE WHO REQUIRE THE SAME FOR EVALUATION OF THIS PROPOSAL OR ANY
INFORMATION CONTAINED HEREIN.
TABLE OF CONTENTS
SECTION SUBJECT
1.0
GENERAL
SUMMARY
2.0
SCOPE
OF SUPPLY
3.0
DESIGN
HIGHLIGHTS
4.0
MANUFACTURING
FACILITIES & EXPERIENCE
5.0
ENIDINE
ENGINEERING
6.0
PERFORMANCE
TESTING
7.0
QUALITY
ASSURANCE
8.0
TECHNICAL
DESCRIPTION OF THE DAMPER
9.0
ENIDINE
SEISMIC TEAM PROFILE
10.0
KEY
PROJECT HISTORY LOG
1.
GENERAL
SUMMARY
Over a decade
ago, ENIDINE designed and manufactured our first viscous dampers for
nuclear seismic applications. ENIDINE
has a long and successful history of providing energy absorption devices
for a wide variety of critical applications. The ENIDINE philosophy is to work closely
with our clients in the design, manufacture and support of our components
long after installation. ENIDINE has
been a leader in the energy absorption business for over 35 years. As part of International Motion Control
Inc. (IMC), a global organization offering a broad range of automation and
motion control technologies, ENIDINE has the engineering expertise and
manufacturing capabilities to provide dampers of up to 1,000 Kip.
ENIDINE has
optimized the damper design to meet three design criteria goals:
a. Meet all technical performance
outlined by the Structural Specification
b. Provide a damper design with a
minimum useful life of 50 years
c. Provide a maintenance-free
damper design to the Owner
2.
SCOPE
OF SUPPLY
The project
specific Scope of Supply is defined by the ENIDINE Quotation. Refer to the current quotation for listed
items, prices, deliveries, and other terms.
Items that
are not part of our Scope of Supply as the Damper Manufacturer include, for
example, the structural design analysis & drawings, the structural
steel work, the installation and erection of the dampers in the field.
As the Damper
Manufacturer, the following items may be assigned as part of our Scope of
Supply (refer to the current quotation for listed items):
a. Viscous Dampers as defined by
the Design Specification
b. Damper Pins for end connection
to brackets or structural members
c. Damper Brackets for field or
shop welding to the structural bracing
d. Functional Performance Testing
of the damper
e. Certified QA/CMTR/Testing Data
Package
f. Third Party Witness subcontract
for testing
g. Technical Site Support
h. Shipment of dampers to site (FOB
SITE)
i. Applied local and state taxes
3.
DESIGN
HIGHLIGHTS
·
The damper design utilizes an annular
orifice technology that has no moving parts and meets the Damping
Constitutive Law:
F = C Va
Where,
F = Damper Resistive Force (Kips)
C = Damping Coefficient (Kips/[ips]a)
V = Velocity (ips)
a = Velocity exponent (dimensionless)
·
ENIDINE’s
orifice design compensates for temperature variations from 30oF
to 120oF. Our orifice
provides a simple method of achieving the constitutive law desired without
requiring any moving mechanical parts other than the piston head moving
through the hydraulic fluid. This
prevents the possibility of fatigued, misaligned, jammed or incorrectly
assembled multiple-piece orifices from affecting the performance of the
damper at critical times.
·
The damper has a minimum number of
moving parts and features simplicity as its overriding design
criteria. The damper can be
completely maintained by any qualified hydraulic mechanic with the
information provided by ENIDINE.
·
The damper utilizes a spring-loaded
reservoir that provides a positive pressure throughout the vessel. This pressure will activate the seals and
prevent moisture and contamination from entering the fluid. The reservoir requires no gas or
high-pressure fluid charge to maintain its functionality.
·
The double-rod design concept allows
the damping in extension and compression to be identical without requiring
additional components. This design
also minimizes reservoir requirements.
The double-rod design creates a much more stable design under
lateral load conditions, such as those found during seismic events.
·
The damper can be fitted with an
externally visible Checked Fill Port
for initial fluid filling and field inspection.
·
All damper surfaces are designed of
stainless steel or epoxy painted alloy steel for corrosion resistance.
·
The damper is designed with an
external Protective Sleeve for the piston rod. This sleeve protects the piston rod from
both debris and side loads.
·
ENIDINE also provides a single-rod
design for installations that have absolute space constraints and
limitations.
·
The final project-specific damper
design shall meet the technical requirements set forth in the Contract
Damper Specification.
4.
MANUFACTURING
FACILITIES & EXPERIENCE
·
Headquartered in Orchard
Park, New
York, ENIDINE was established in
1966 to design, manufacture and market Energy Absorption and Vibration
Isolation products worldwide.
ENIDINE is a leader in developing state of the art technology in the
field of fluid controlled energy dissipation devices.
·
ENIDINE has always recognized the
importance of having a global presence.
From the beginning, ENIDINE exported its products through various
licensing and distribution agreements.
In 1976, ENIDINE continued to expand its international presence with
a European headquarters in Germany,
Pacific headquarters in Japan,
and various subsidiaries and affiliates in the United
Kingdom, Switzerland, Spain
and Mexico.
·
In 1989, ENIDINE West was established
in Irvine,
California
to improve communications and support to customers located in the western
states. ENIDINE West has also served
as our Seismic Program office.
·
In 1995 International Motion Control
Inc. (IMC) was established as a holding company to oversee ENIDINE and the
growing number of companies and subsidiaries that had become a part of
ENIDINE. A few of the other
companies that have joined IMC include Midland Pneumatics, Compact
Automation Products Inc., CMC (Cleveland Motion Controls Inc.), and Motion
Science Inc.
·
Today, these companies are working
together sharing technology, engineering expertise, manufacturing
facilities and their extensive distribution network. IMC has a combined work force of 800
employees and annual sales in excess of $100 million.
·
ENIDINE expertise in energy
dissipation is a result of designing and building fluid filled dampers and
shock absorbers for over 35 years. In
the last three years alone, ENIDINE has built and delivered over 1 million
shock absorbers and dampers of varying sizes. One third of those products were special
designs, engineered for customer specific applications.
·
ENIDINE has developed an extensive
knowledge base of various methods of orifice design, interface package
design and custom assembly of energy dissipation products. ENIDINE is familiar with the numerous
trade-off characteristics of product design related to performance, product
cost, reliability, longevity, complexity and maintainability.
·
The prototype and production viscous
dampers will be manufactured and assembled utilizing the combined efforts
of the ENIDINE machine shop, which is an internal prototype machining and
production facility, in conjunction with one of our manufacturing vendors
that specializes in large bore cylinders.
The size and complexity of the fluid viscous dampers require
machining capabilities not resident in all manufacturing or fabricating
facilities, due to the cost of capital investment.
5.
ENIDINE
ENGINEERING
·
In order to serve the wide variety of
products represented by our diverse customer base, ENIDINE Engineering is
divided into three groups, Research and Development Group,
Aerospace/Defense Group, and Industrial Group.
·
The Research and Development Group is
charged with developing new technologies that will ensure that ENIDINE
provides the best engineering solutions in shock and vibration technology
worldwide. This group is responsible
for expanding our knowledge in orifice technologies, as well as developing
and expanding our lines of seismic and shock isolation products, wire rope
and elastomeric mounts.
·
The Aerospace/Defense Group provides
the engineering support for applications that cannot be met by standard
products. This group has expertise
in developing products for use by military and aerospace customers to
fulfill their demanding requirements, as well as, developing special
products for commercial applications.
·
The Industrial Group has a large
selection of standard shock and vibration products designed to meet the
needs of most applications. ENIDINE
will frequently solve complex applications with a mixture of standard
components from our Engineering Libraries.
ENIDINE currently has over 14,000 active component parts to select
from during the design process.
·
The ENIDINE Engineering groups have
available the following computerized design and analysis capabilities.
a. 2-D
CAD Software
·
Anvil1000
b. 3-D
CAD Software
·
SolidWorks
c. Finite Element & Dynamic Software
·
Cosmos
6 DOF
·
DADS
Dynamic Modeler
·
SAP-2000
d. Mathematical Modeling
·
MathCAD
·
MATLAB
6.
PERFORMANCE
TESTING
·
ENIDINE recommends that the dampers
be mounted in a dynamic hydraulic test bench and performance tested with a
sinusoidal wave pattern. The
closed-loop controlled displacement input signal shall follow a sine wave
pattern with a data acquisition rate of
at least
50 Hz.
·
Each Prototype and Production Damper
will be tested at 70° F
at 50% and 100% of the rated velocity.
In addition, one of each type of Prototype Damper will be tested at
30° F
at 50% and 100% of the rated velocity.
The Structural Engineer of record must define the sinusoidal
peak-to-peak displacement based on the following constitutive laws:
Displacement = + D·sin (2π·ƒ·t) = input signal
Velocity = +
2π·ƒ·t·D·cos
(2π·ƒ·t)= + V·cos (2π·ƒ·t)
Force = + C·Vα
= output response
·
The Structural Engineer should also
consider the overall energy absorption that will occur during the 30 to 45
second MCE Earthquake. This is the
amount of energy, with a safety factor, that the damper must absorb during
the event.
·
The resulting sinusoidal damping
force, velocity and displacement, as a function of time, should be
recorded. The test results shall be
plotted as wave patterns, as a function of time and as a force-displacement
hysteretic loop. The
force-displacement data of the first hysteretic loop shall be
mathematically reduced to identify the damper’s dissipative energy
efficiency.
·
All testing will be conducted
in-house at ENIDINE on our fully programmable dynamic test bench, which was
specifically designed and commissioned for seismic and military prototype
and production damper testing.
7.
QUALITY
ASSURANCE
·
As an industry leader in the field of
energy absorption and vibration isolation, ENIDINE satisfies the most
stringent quality assurance requirements of our customers through a
fully implemented Quality Management System.
·
The foundation of the ENIDINE quality
system was built from many years of providing highly engineered products to
the U.S.
government, as a result we are fully compliant
with
the requirements of MIL-Q-9858A.
·
In order to satisfy the quality needs
of our customers around the world, ENIDINE is certified to the quality
system requirements of the International Standards Organization, ISO-9001
and is recognized by national accreditation boards domestically and abroad.
·
ENIDINE’s
approach to quality assurance begins with the QA Department serving as an
active participant in product design development and product
qualification. ENIDINE presently
has established Quality Assurance
Programs, utilizing:
Ø
ISO-9001
Ø
ANSI/ASQ
Q91
Ø
MIL-Q-9858A
Ø
MIL-I-45208A
Ø
Boeing
DI-9000
Ø
FAA
Regulation 21, Subpart
K
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ENIDINE
Quality Control Plan
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Page 1 of 1
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1) Plan Number:
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QP-TBD
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DATE:
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12/1/02
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2) Customer:
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Seismic Project
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REV:
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Preliminary
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3) ENIDINE Part
Number:
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SDXXXXX
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4) Description:
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200 Kip x 8” Stroke Std
Viscous Dampers
Design, Manufacture & Test Viscous Dampers
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5) ENIDINE Drawing
No:
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SD TBD
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6) Reference
Documents:
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“Customer
Specification” Section
13080
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7) Reference
Sections:
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“Reference
sections”
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8) General:
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This quality plan is meant to supplement ENIDINE drawings and the
Customer specification. This plan
will provide information indicating the quality framework to be followed
during design and manufacturing of this project.
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9) Applicable
Specifications
and Standards
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“Customer
Spec”
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ENIDINE’s QA System (compliant with ISO-9001 (Certified by BVQi)
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ENIDINE WORKMANSHIP STANDARD
WS001
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ASME BPV Code – ASME Boiler &
Pressure Vessel Codes
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AWS D1.1 – AWS Structural Welding Code - Steel
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MIL-C-26074 – Coating, Electroless Nickel
Requirements
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QQ-C-320 – Plating, Specifications for Industrial Chrome
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10) Certifications &
Traceability:
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Ø
Material Heat Lot Traceability Required
Ø
Certified
Material Test Reports required referenced structural components – see
ENIDINE drawing
Ø
The drawing
of each component part will specify where this requirement is
necessary. If CMTR are not called
out on the component part drawing, the vendor will maintain a copy of the
material COC from their supplier certifying that the supplied material
meets referenced material specification.
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11) Marking
& Identification:
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Ø
Each
serialized seismic damper shall have its own data package, unless the
parts all come from the same heat lot.
If all component parts come from the same heat lot, the package
will identify the applicable S/N's that the data package applies to.
Ø
Component
parts requiring traceability shall be identified through all stages of
production.
Ø
Each seismic
damper is to be serialized and marked in accordance with Customer Spec.
13080.
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12) Testing:
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A. Prototype Acceptance
Testing will be in accordance with Customer Acceptance Test Plan.
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B. Prototype Damper Testing
Plan prepared in accordance with 13080 (PROTOTYPE DAMPER TESTS).
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C.
QC Test Plan
prepared in accordance with 13080
(QUALITY CONTROL (QC) TESTS).
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D. A QC Test Report shall be prepared for each damper in accordance
with contractual requirements.
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13) Cleaning
& Painting:
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TBD - As required by Contract and ENIDINE Drawings
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14) Certifications
& Reports:
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Certificate of compliance, certified material test reports (CMTR's), QC Test Reports and Certification of special
processes.
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15) Approvals:
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8.
TECHNICAL
DESCRIPTION OF THE DAMPER
·
The damper is a double acting,
hydraulic cylinder device that incorporates a through rod design.
·
The damper utilizes a thermally
compensated annular orifice technology that contains no moving parts. This orifice system meets the
constitutive law requirements of the damper specifications.
·
The damper design is a combination of
stainless steel and carbon steel components. All carbon steel components are epoxy
painted for corrosion protection.
·
The damper design can withstand a
continuous 2g-side load. In the
primary load direction, the damper will be designed with the minimum safety
factors imposed by the customer’s specification. At a minimum, the damper will be designed
with a safety factor of 1.5 on yield and 2.0 on tensile failure.
·
The damper has a spring-energized
piston-type reservoir. This
reservoir acts as a thermal compensation device designed to maintain a near
constant static pressure in the damper.
The spring-energized reservoir allows the fluid volume in the unit
to expand and contract, as a result of ambient temperature changes, with
minimal variation in overall system pressure.
·
The hydraulic fluid is silicone oil (dimethyl polysiloxane
class). This type of hydraulic fluid
is selected for its combination of properties:
Ø
Low change in viscosity as a function
of temperature
Ø
Excellent shear stability and high
resistance to mechanical shear
Ø
Excellent heat conductivity and is
constant over a wide temperature range
Ø Non corrosive
and chemically inert
Ø
Self-extinguishing flame-point at 700oF
Ø
Very low toxicity and presents no
environmental concerns
·
The damper attaches to the structure
by means of spherical bearings, which are designed into each end of the
unit. These spherical bearings allow
for 6 degree of free rotation and articulation. The damper mounts via mounting pin
assemblies. These pins pass through
the spherical bearings and the structure’s brackets and create a pin-pin
connection. This places the damper
in a pure axial loading condition (e.g. X-loading, Y-free, Z-free, and the
three rotational directions – free).
·
The damper should be installed at or
near the mid-stroke position. To
ease installation of the dampers, the units have been designed with a
minimum of 1/2" of additional stroke length. This additional stroke length will allow
the unit to be adjusted in the field to mate up with the structural
brackets that will support the damper.
·
The damper is designed for a
thirty-five year life with little or no maintenance. ENIDINE recommends that the dampers be
inspected at regular intervals to ensure their readiness for use. The inspectors should look for any signs
of hydraulic fluid leakage, and bent, distorted, cut, dented, or abraded
components of the damper.
·
An Installation, Operation and
Maintenance Manual (IOM) will be provided with the damper. The operation of a damper is passive,
once properly installed the unit does not require active operational
elements, e.g. power, hydraulics, air or electricity. The IOM Manual is a critical document
that identifies the required methods for installation and maintenance.
·
The internal configuration of the
damper can be summarized, as follows:
Ø
The Piston Rod extends through the
damper primary Cylinder.
Ø
The Piston Rod extends into the
secondary Cylinder.
Ø
The Piston Rod is sealed at each end
to prevent leakage via two dynamic seals.
Ø
The Piston Rod is protected from
external damage with a Structural Sleeve.
Ø
The Piston Rod is manufactured from
17-4PH Stainless Steel.
Ø
The Piston Rod is connected to a
Piston Head.
Ø
The Piston Head separates the primary
Cylinder into two hydraulic chambers.
Ø
The Piston Head connects the two
chambers via the damping Orifice.
Ø
The Reservoir consists of a bleed
orifice, a check valve, and a spring-loaded piston.
Ø
The damper body is made up of a
primary Cylinder and a secondary Cylinder.
Ø
The secondary Cylinder is where the
Reservoir Assembly resides.
Ø
The end of the Piston Rod has a
Clevis for mounting purposes.
Ø
The end of the secondary Cylinder has
a Clevis for mounting purposes.
Ø
The Clevis Ends are where the
Spherical Bearings are found.
Ø
The damper is fitted with a
pressurized Fill Port.
·
The damper operates in a similar
fashion for both the tension and compression mode. For example, during the extension mode a
tensile (extending) force is applied to the spherical bearings. This force tends to extend the damper and
thus move the piston rod and piston head assemblies. This increases the fluid pressure in the
tension side of the primary cylinder (tension chamber), which drives fluid
through the orifice. This fluid
travels to the low-pressure side of the piston head (e.g. the compression
chamber). The flow of fluid from the
high-pressure side through the orifice to the low-pressure side creates the
actual damping forces. The seismic
energy is converted into thermal energy by the viscous shearing of silicone
fluid as it passes through the orifice.
9.
ENIDINE
SEISMIC TEAM PROFILE
·
Mike Siino,
P.E., Vice President & General Manager of Engineered Products, which
includes Enidine Seismic and Enidine
Aerospace will oversee the technical aspects of the program, including
engineering, material purchasing, product estimating, manufacturing,
quality control and testing. Mike
has 15 + years of senior management and project engineering in defense,
seismic and construction field. MS
& BS ME, University of California Davis, MBA CSU Fullerton, Licensed
Mechanical Engineer in the states of California and Washington.
·
Mary Kerns, Seismic Program Manager,
will be responsible for the overall program management including sales,
marketing, scheduling, budgeting, and control of project activities. Mary has 20 + years of industrial program
management, technology development and marketing experience. M. Ed. & BA, University of Buffalo.
·
Brian Bucholtz,
Senior Seismic Project Engineer, will be responsible for the design
drafting and structural calculations of the fluid viscous dampers. Brian has 25 years mechanical engineering
experience. AAS MT, Erie Community
College
·
Shubin Ruan, Ph.D, Senior Dynamic
& Controls Engineer, will be responsible for
orifice design, the testing and performance evaluation of the fluid viscous
dampers. Shubin has
6 years experience in design, testing and evaluation of seismic
dampers and semi-active isolation products.
Ph.D. CE, University of Buffalo, MS ME Dalian
University, BA ME Jiamusi University.
·
Joseph Schoen, Seismic Project
Engineer, will provide testing services and design support to the Seismic
team. Joseph has experience in the
prototype and production testing of fluid viscous dampers. BS Mechanical Engineering,
University of Buffalo.
·
Dennis Scully, Director of
Operations, will be responsible for all aspects of manufacturing and the
QA/QC Program throughout our seismic projects. Dennis will generate a project based
Quality Control Plan. He has 16 years in construction, engineering,
quality and production. MBA, Duquesne University, BS ME, Gannon University.
·
Dave Smith, Materials and Purchasing
Manager, will be responsible for production estimation and materials
management and procurement of materials, parts and services. Dave has 20 + years in material procurement and control. BS in Management, State University of New York Geneseo, Materials Management Level II, University of Buffalo.
10. KEY PROJECT HISTORY LOG
King County Courthouse
Baugh Construction
900 Poplar
Place South
Seattle, WA 98144
Contact:
Don
Kawalchuk
(206-726-3626)
Dates of
Project: 11/02
– 11/03
Contract No:
Contract Description; (97) 150 Kip x 6” viscous dampers, mounting
pins, with spherical bearings
Coronado Bridge
Seismic Retrofit
Traylor
Pacific
602
Convention Way
San
Diego, CA 92101
Contacts: Calvin
Casey, Traylor Pacific (619-223-3611)
Dates
of Project: 1/01
– 11/01
Contract
No.: 11-021924
Contract Description: (20) 300 Kip x 18” viscous dampers, mounting
pins, with spherical bearings
3COM Building
Rudolph
and Sletten, Inc.
P.O.
Box 4637
Foster
City, California 94404
Contacts: Rich Ambidge, Structural Engineer (510-642-3440)
Dates
of Project: 8/25/97 –
2/17/98
Contract Description: (63) 200 Kip x 4” viscous dampers, mounting
pins, rear tang mounts with spherical bearings
Vancouver
Reservoir
Greater
Vancouver Regional District
4330
Kingsway, Burnaby BC
Canada
V4H 468
Contacts: Tom
Nelson, Buyer (604-432-6329)
Dates
of Project: 12/21/97 –
5/1/98
Contract
Description: (17) 175 Kip x 8” viscous
dampers, mounting pins and brackets.
Santiago Creek Bridge
Project
Silverado
Constructors / CH2M Hill
2485
Natomas Park Drive
Suite
600
Sacramento,
CA 95833-0300
Contact: Hans
Standgaard, S.E. (916-920-0300)
Dates
of Project: 10/30/97 –
7/25/98
Contract
No: E94-01
Contract
Description: (6) 160 Kip x 18” viscous
dampers and mounting pins.
Trump Tower
Canron Construction
P.O.
Box 421
Shaw
Road, Conklin,
New York 13748
Contact: Mike
Zilnik (607-723-4862)
Dates
of project: 9/99
– 11/00
Contract Description: (16) viscous damping devices for Tuned Mass
Damper Project.
Rancho San
Justo School
Gymnasium
Greg
Opinski Construction
145
Riggs Avenue
Merced,
CA 95340
Contact: Terry
Williams (209-384-2851)
Dates
of Project: 1/99
– 7/99
Contract Description: (10)
24 Kip x 8” viscous dampers
Phalanx
Gun System
Naval
Inventory Control Point, NAV ICP
5450
Carlisle Pike / P.O. Box
2020
Mechanicsburg,
Pa 17055-0788
Contact: Charles
Splawn (717-605-4262)
Dates
of Project: 1996-1998
Contract
Description: Direct Purchase Phalanx
Isolators
Tomahawk
Cruise Missile
United
Defense LP
4800
East River Road
Minneapolis,
Minnesota 55421-1498
Contacts: Tom Danczyk, Engineering Manager (763-572-6581)
Dates
of Project: 1/5/00
Contract
Description: (25) DAMSI, Double Acting
Mechanical Shock Isolators
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