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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: 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.
Acoustiblok Creates Cutting-Edge Cinema Acoustics
to gypsum assemblies provides enhanced noise isolation at the same frequency ranges gypsum inherently has deficiencies. These frequency ranges are still apparent with as much as four layers of gypsum applied to a wall assembly. Acoustiblok changes the internal damping of the wall. Acoustiblok not only adds essential mass to the wall, but it also enhances the flexibility and stiffness changing the natural resonance of the structure. Acoustiblok has a more linear (without dramatic dips and peaks... (read more)
Browse Soundproofing and Acoustic Materials Datasheets for Acoustiblok, Inc.
Conduct Research Top
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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Building Control with Passive Dampers: Optimal Performance-based Design for Earthquakes
Constantinou 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. . . . . . . . . . . . . . . . . . . . . . . .
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.
9.1b Comparison of Stiffness and Damping Coefficients : Symmetric Configuration.
Stability and dynamics of systems of interacting bubbles with time-delay and self-action due to liquid compressibility
The lower row shows the eﬀec- tive nondimensional radiation damping coeﬃcient normalized by the nondimensional radiation damping coeﬃcient of a single bubble.
Development of Hybrid Electromagnetic Dampers for Vehicle Suspension Systems
Electromagnetic dampers are used in active suspension systems, where the damping coefficient is controlled rapidly and reliably through electrical manipulations.
Rotordynamics of Automotive Turbochargers
Therefore, the bearing stiffness and damping coefficients of change nonlinearly with the rotor speeds.
Machinery Vibration and Rotordynamics
Notice that the denominator gets small when the exciting frequency ω is ωn (Eq. 1-1) unless the damping coefficient c is large.
Dynamics of Microelectromechanical Systems
3.1 Introduction 3.2 Lumped-Parameter Viscous Damping 3.2.1 Viscous Damping Coefficient and Damping Ratio 3.2.2 Complex Number Representation of Vectors 3.2.3 Q-Factor 3.3 Structural Damping 3.4 Squeeze-Film Damping 3.4...
A Comparative Study of Experimentally Measured and Theoretically Predicted Wave Drift Damping Coefficients
A Comparative Study of Experimentally Measured and Theoretically Predicted Wave Drift Damping Coefficients .
Journal of Spacecraft and Rockets > Prediction of the Pitch-Damping Coefficients Using Sacks's Relations
Journal of Spacecraft and Rockets > Prediction of the Pitch- Damping Coefficients Using Sacks's Relations .
The Shock Absorber Handbook
ParameterC is called the damping coefficient , with basic units N/ms 1 Ns/m,and for practical vehicle values expressed inkNs/m.