Dissipative Heating in a Viscoelastic Material Due to Cyclic Pressure

1973 ◽  
Vol 17 (2) ◽  
pp. 209-225 ◽  
Author(s):  
E. C. Ting ◽  
J. L. Tuan
Keyword(s):  
Viscoelastic Material ◽  
Dissipative Heating ◽  
Cyclic Pressure

scholarly journals Bending vibrations of viscoelastic plates within the Kirchhoff-Love model

2019 ◽  
pp. 64-67
Author(s):  
O. V. Pyatetska
Keyword(s):  
Viscoelastic Material ◽  
Plate Thickness ◽  
Dissipative Heating ◽  
External Excitation ◽  
Bending Vibrations ◽  
Thermal Boundary Conditions ◽  
Transverse Vibrations ◽  
Linear Viscoelastic Material ◽  
Different Types ◽  
Linear Viscoelastic

Within the framework of the hypotheses of the classical Kirchhoff-Love theory, complete systems of resolving equations are constructed to determine the stress-strain state and the temperature of dissipative heating under steady transverse vibrations of plates made of a linear viscoelastic material, the properties of which depend on the frequency of external excitation and temperature. The equations were obtained without any preliminary suggestions about the law of temperature variation over the plate thickness. This law is determined in the process of solving the problem. The unrelated problem of vibrational bending of viscoelastic plates for complicated way of fixing a contour and different types of thermal boundary conditions is considered. Mathematical models of problems on the steady-state transverse vibrations of plates made of a linear viscoelastic material, the properties of which depend on temperature for an arbitrary law of its change over the thickness of the object. If the material characteristics depend on temperature, investigation of the influence of temperature of dissipative heating is reduced to solution of complicated non-linear systems of differential equations.

A Consistent Implementation of Inelastic Material Models into Steady State Rolling

2016 ◽  
Vol 44 (3) ◽  
pp. 174-190 ◽  
Author(s):  
Mario A. Garcia ◽  
Michael Kaliske ◽  
Jin Wang ◽  
Grama Bhashyam
Keyword(s):  
Steady State ◽  
Numerical Simulations ◽  
Viscoelastic Material ◽  
Rolling Contact ◽  
Arbitrary Lagrangian Eulerian ◽  
Ale Formulation ◽  
Inelastic Material ◽  
Material Formulation ◽  
Steady State Rolling ◽  
Efficient Alternative

ABSTRACT Rolling contact is an important aspect in tire design, and reliable numerical simulations are required in order to improve the tire layout, performance, and safety. This includes the consideration of as many significant characteristics of the materials as possible. An example is found in the nonlinear and inelastic properties of the rubber compounds. For numerical simulations of tires, steady state rolling is an efficient alternative to standard transient analyses, and this work makes use of an Arbitrary Lagrangian Eulerian (ALE) formulation for the computation of the inertia contribution. Since the reference configuration is neither attached to the material nor fixed in space, handling history variables of inelastic materials becomes a complex task. A standard viscoelastic material approach is implemented. In the inelastic steady state rolling case, one location in the cross-section depends on all material locations on its circumferential ring. A consistent linearization is formulated taking into account the contribution of all finite elements connected in the hoop direction. As an outcome of this approach, the number of nonzero values in the general stiffness matrix increases, producing a more populated matrix that has to be solved. This implementation is done in the commercial finite element code ANSYS. Numerical results confirm the reliability and capabilities of the linearization for the steady state viscoelastic material formulation. A discussion on the results obtained, important remarks, and an outlook on further research conclude this work.

scholarly journals Further Evidence that the Pulmonary Capillary Venous Pressure Pulse in Man Reflects Cyclic Pressure Changes in the Left Atrium

1953 ◽  
Vol 1 (4) ◽  
pp. 337-339 ◽  
Author(s):  
LARS WERKÖ ◽  
E. VARNAUSKAS ◽  
H. ELIASCH ◽  
H. LAGERLÖF ◽  
A. SENNING ◽  
...  
Keyword(s):  
Left Atrium ◽  
Pressure Pulse ◽  
Venous Pressure ◽  
Cyclic Pressure ◽  
Pulmonary Capillary ◽  
Pressure Changes

scholarly journals Vibration Reduction of an Existing Glass Window through a Viscoelastic Material-Based Retrofit

2018 ◽  
Vol 8 (7) ◽  
pp. 1061 ◽  
Author(s):  
Qian Feng ◽  
Liming Fan ◽  
Linsheng Huo ◽  
Gangbing Song
Keyword(s):  
Viscoelastic Material ◽  
Vibration Reduction
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