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Supplier: ASTM International
Description: of an electromagnetic model to describe the back emf effect. This approach simplifies the problem by modeling the back emf in terms of an equipment spring constant (keq) and an equipment viscous damping coefficient (ceq). The electromagnetic model consists of four parameters. The method used to measure
Standards and Technical Documents - The response of two-degree-of-freedom systems (computer program). -- 82037Supplier: IHS ESDU
Description: coordinates and which can be described by two second-order constant coefficient differential equations. The independent coordinates are the dependent variables of the system. An applied input forcing function is allowed for each second-order equation and to ease program input one of six possible
Technical Journals - Monitoring the Effect of Zebra Mussels on Raw-Water Intakes (PDF) -- JAW_0036163Supplier: American Water Works Association (AWWA)
Description: the conditions of water intakes by signaling a change in flow resistance. The authors calculated some damping ratios and compared them with hydraulic data from drawdown tests. The results show that the damping ratio index has a direct relationship with the friction coefficient of the intake.
Supplier: Habasit America
Description: elevator belt; Conveyor belt; Cutter belt; General conveying belt; Magnetic conveyor belt; Metal and plastic parts; Power turn belt; Stamping belt Special Features: Abrasion resistant on both sides; Abrasion resistant; Adhesive-free joint; Cut resistant; Damping behavior; Edges wear resistant
- Application / Media: General Purpose, Manufacturing / Fabrication, Packaging, Pulp & Paper
- Primary Belt Material: Polyester
- Belt Thickness: 0.2205 inch
- Belt Width: 60 to 78.74 inch
Description: . High Noise Reduction Coefficients - the foam's ability to absorb airborne sound energy with minimum reflections. Damping - the composite's ability to attenuate structure-borne vibration on metals and plastics. Thereby reducing reradiated noise and material fatigue. The diversity of constructions
- Product Description: Foam Sheet / Roll
- Mounting: Adhesive / Tape
Supplier: Advanced Antivibration Components - AAC
Description: FEATURES: • Easy peel and stick application. • Nonstaining and nonmarring. • High coefficient of friction. • Superb resistance to skidding. • Vibration and shock damping. • Crack-resistant and resilient. • Low abrasion. • UL recognized components. • Shelf
Supplier: Acoustics First Corporation
Description: Composite foams combine BlockAid® Barrier, acoustical foam (either Polyurethane or FireFlex™) and a ¼" Foam/Barrier Decoupler. Composite Foam is used when you need increased noise absorption, sound transmission loss and/or vibration damping. Composite foams can be used to create
- Foam Type: Closed Cellular
- Form / Shape: Stock Shape (Bar, Sheet, etc.), Board / Block / Bun
- Material / Composition: Plastic / Polymer
- Polymer / Chemical System: Polyurethane
Supplier: Franklin Fibre-Lamitex Corporation
Description: 6/6 Nylon is a superior performer. Of all the unmodified nylons, it has the highest melting point, is the strongest, and most rigid. Because of its toughness, combined with an excellent low friction coefficient and good abrasion resistance. Nylon can replace a wide variety of vastly different
- Chemical / Polymer System Type: Polyamide / Nylon
- Filler Material: Fiber Glass
- Form / Shape: Flat / Bar Stock, Plate, Rod / Round Stock, Hex Stock
- Hollow / Tubular Stock: Yes
Supplier: Allied Electronics, Inc.
Description: Non-Inductive Performance Low Thermal Resistance Anti-Static Tube Packaging Available Applications Power Supplies Industrial Controls Automotive Steering Pre-Load/Damping Snubber/Bleeder
- Category / Application: General Use
- Technology / Construction: Thick Film
- Mounting / Packaging: Radial Leads, Other
- Resistance Range: 51 ohms
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ITT Enidine Inc.
Jarret Series Industrial Shock Absorbers
The design of Jarret Series Industrial Shock Absorber utilizes the unique compression and shear characteristics of specially formulated silicone elastomers. These characteristics allow the energy absorption and return spring functions to be combined into a single unit without the need for an additional gas or mechanical spring stroke return mechanism. Simple design. High reliability. High damping coefficient. Low sensitivity to temperature variances. Our Jarret products are used... (read more)
Browse Shock Absorbers, Linear Dampers, and Dashpots Datasheets for ITT Enidine Inc.
Kellett Enterprises, Inc.
Stop Vibration Before It Destroys Your Equipment
to 220 °+ Fahrenheit. · Oil, Abrasion, Flame, and UV Resistant. · Tensile Strength up to 1800 PSI. · Max Load up to 400 PSI. · Damping Coefficient up to @10hz: 110.11 N-Sec/mm. · Coefficient of Friction up to Static: 963u. · Kinetic up to .866u. · Water Absorption < 2%. The LP-13 Shake Absorber ® pad installs easily and adds life to machinery, computer systems, engines, parts and anything else that threatens stability, production... (read more)
Browse Vibration Isolators and Machine Mounts Datasheets for Kellett Enterprises, Inc.
Interstate Plastics, Inc.
Nylon- Natural Cast Sheet
and sprockets. Cast nylon features inherently less stress versus extruded nylon. Lower moisture absorption gives cast nylon a higher dimensional stability, while its crystalline structure offers higher strength. Cast nylon performs at temperatures up to 70F degrees higher than extruded nylon. Cast nylon offers a combination of good mechanical properties, excellent bearing and wear characteristics and a low coefficient of friction. Its fatigue resistance, noise damping ability, corrosion resistance... (read more)
Browse Plastic Tubing Datasheets for Interstate Plastics, Inc.
Saint-Gobain Performance Plastics - Bearings and Tolerance Rings
Our Promise for Friction Control and Longer Life
to its unique structure and the additional coatings which can be applied. NORGLIDE ® Bearings and RENCOL ® Tolerance Rings are lightweight, high quality, versatile bearings and fasteners. They have low friction values and excellent damping properties to decrease noise and vibration inside a vehicle. Thanks to Smart Design, they enable weight reduction and bring down fuel consumption without increasing cost. They also come with Long Life built in, by reducing the risk of galvanic... (read more)
Browse Plain Bearings and Sleeve Bearings Datasheets for Saint-Gobain Performance Plastics - Bearings and Tolerance Rings
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Use for time delay applications. Damping coefficient is almost always the primary determinant for applications where a specific time delay is required.
Shifting Critical Speed Out of the Operating Range by Changing From Tilting Pad to Sleeve Bearings (.pdf)
One property of heavily to moderately loaded sleeve bearings is the resulting asymmetric stiffness and damping coefficients. These asymmetric properties often result in split first critical speeds. Since the horizontal stiffness is much softer than the vertical, a horizontal first critical speed
Shock, awe, and vibration
solutions) and solid elastic materials. That's because these so-called viscoelastic materials have a hybrid of qualities. Purely elastic materials store energy during loading then fully return when the load is removed. In contrast viscoelastic materials have a high damping coefficient that returns
Take Out The Shake
of load pressure -- then the coefficient of s2 disappears, leading to severe instability. The most critical point of operation is around the valve's null position. For a closed-center valve, Kp is very low. This leads to extremely low damping and is a major source of instability and oscillations
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Proceedings of the 9th IFToMM International Conference on Rotor Dynamics
Rated speed is 3000 rpm, bearings are oil film bearings, represented by 4 � 4 stiffness and damping coefficients , which have been considered for simplicity constant over the all speed range.
Building Control with Passive Dampers: Optimal Performance-based Design for Earthquakes
Constanti- nou and Tadjbakhsh (1983) derived the optimum damping coefficient for a damper placed on the first story of a shear building subjected to horizontal random earthquake motions.
4-3 Comparison of estimated damping coefficient of the linear SDOF model with different levels of noise. . . . . . . . . . . . . . . . . . . . . . . .
Principles of Microelectromechanical Systems
If we wish to set up a mechanical quality factor that affects the band- width of a mechanical filter, we should evaluate the damping force or damping coefficient that can be provided by fluid dynamics.
The Shock Absorber Handbook 2nd Edition Complete Document
The Suda prototype successfully demonstrated appropriate characteristics with a damping coefficient around 1.6 kN s/m, and was tested with encouraging performance on the rear of a passenger car.
Electromagnetic dampers are used in active suspension systems, where the damping coefficient is controlled rapidly and reliably through electrical manipulations.
The lower row shows the e?ec- tive nondimensional radiation damping coe?cient normalized by the nondimensional radiation damping coe?cient of a single bubble.
Rotordynamics of Automotive Turbochargers
The bearing stiffness and damping coefficients vary with the rotor speeds nonlinearly.
Dynamics of Vehicle-Road Coupled System
� ???????????????????????????????????????????? 266 8?4?3 The Effects of Elastic Modulus ?????????????????????????????????????????????? 267 8?4?4 The Effects of the Pavement Poisson Ratio ??????????????????????????? 270 8?4?5 The Effect of the Foundation Response Modulus ?????????????????? 270 8?4?6 The Effect of the Foundation Damping coefficient ??????????????? 272 8?5 Chapter �
Rotordynamics of Automotive Turbochargers
Therefore, the bearing stiffness and damping coefficients of change nonlinearly with the rotor speeds.
Vibration, Structural Engineering and Measurement II
 J.W. Lund: �Spring and Damping Coefficients for the Tilting Pad Journal Bearing�, ASLE Trans, Vol.7, (1964), p.342.
Hilbert Transform Applications in Mechanical Vibration
For this identification in the time domain, it was suggested that relationships should be formed between the damping coefficient (or decrement) as a function of amplitude and between the instantaneous frequency and the amplitude.