Results 251 to 260 of about 22,087 (289)

Equivalent discrete damping inserts for laminated plates

22nd Structures, Structural Dynamics and Materials Conference, 1981
A method has been developed to represent the damping of a fully coated or a multi-layer plate by an equivalent discrete damping insert. The method makes it possible to compare the effectiveness of a layer damping treatment with that of an external ...
Özgüven, Hasan Nevzat
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Equivalent Damping Added by Sound Package

SAE Technical Paper Series, 2020
<div class="section abstract"><div class="htmlview paragraph">In Automotive and Aerospace industries, sound package has an important role to control vehicle noise in order to improve passenger comfort and reduce environmental noise pollution.
Dilal Rhazi, Kunal Mathur, Abhishek Nulkar   +2 more
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Non-linear damped pendulum treated by linear equivalence

Mechanics Research Communications, 2000
The authors study the nonlinear motion of a rigid damped pendulum governed by the equation \(\ddot y+ 2\lambda\dot y+ \omega^2\sin y= 0\). The linear equivalence method (LEM) is applied to examine the problem for various values of damping ratio \(\chi= \lambda/\omega\) and for various initial data. The complete LEM representations of the solution allow
Teodorescu, P. P., Toma, Ileana
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Equivalent damping of SDOF structure with Maxwell damper

Earthquake Engineering and Engineering Vibration, 2018
To predict the maximum earthquake response of an SDOF structure with a Maxwell fluid damper or supplemental brace-viscous damper system using the seismic design response spectrum technique, a new approach is presented to determine the first- and second-order equivalent viscous damping and stiffness, the peak responses, and the damper force of the above
Chuangdi Li, Tun Li, Dingwei Ban, Xinguang Ge   +3 more
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MEASUREMENT OF EQUIVALENT STIFFNESS AND DAMPING OF SHOCK ABSORBERS

Experimental Techniques, 2002
It is demonstrated that we can use electrodynamic shakers to obtain the equivalent dynamic properties of shock absorbers for NVH applications. Application of pre-load is an issue which needs further investigation. Although a simple fixture using cotton cord worked well in this case, some shakers are capable of withstanding static pre-loads which may be
M.D. Rao, S. Gruenberg
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Equivalent Damping in Piping Due to Local Yielding

Journal of Pressure Vessel Technology, 1989
Abstract A method is presented to 1) account for ductility effects in the response of one degree of freedom systems by means of evaluating the frequency shift and additional damping; 2) evaluate the energy dissipation which takes place in piping due to local yielding in elbows.
L. Lazzeri, M. Scala
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Equivalent Viscous Damping for Yielding Structures

Journal of the Engineering Mechanics Division, 1968
The paper treats the application of the concept of equivalent viscous damping to the steady-state response of simple yielding structures subjected to sinusoidal excitation. Using the elasto-plastic oscillator as an example, it is shown that results differing by several hundred per cent can be obtained, depending on the way that the resonant frequency ...
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Expected Equivalent Damping Under Random Excitation

Journal of Engineering for Industry, 1969
An analytical technique for obtaining an expected equivalent damping coefficient for a single-degree-of-freedom structure under random loading is discussed and illustrated. The expected energy dissipation is determined by integration of the product of the inelastic deformation energy and the amplitude probability density throughout the range of ...
M. R. Torres, C. D. Mote
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Equivalence of the mechanical and entropic descriptions of elastothermodynamic damping in composite materials

Mechanics of Composite Materials and Structures, 1996
SUMMARY In 1938 Zener showed that for an isotropic homogeneous solid, the elastothermodynamic damping may be predicted using either a mechanical description or an entropic description. The objective of this paper is to extend Zener's result to a composite material with anisotropic subregions and thermally imperfect interfaces.
JOSEPH E. BISHOP, VIKRAM K. KINRA
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Equivalent-linear stiffness and damping in rocking of circular and strip foundations

Bulletin of Earthquake Engineering, 2013
An approximation is developed for obtaining the nonlinear stiffness $$K_{R}$$ and damping $$C_{R}$$
Adamidis, O., Gazetas, G., Anastasopoulos, I., Argyrou, Ch   +3 more
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