Numerical characterisation of nonlinear stiffness properties of pre-stressed vibration isolation mounts
Keywords:
Computer simulation, Computer software, Degrees of freedom (mechanics), Elastic moduli, Finite element method, Poisson ratio, Prestressing, Strain, Stress concentration, Vibrations (mechanical), Viscoelasticity, Nonlinear stiffness, Vibration isolation mountsAbstract
Numerical characterisation of nonlinear stiffness properties of pre-stressed vibration isolation mounts was presented. A computational procedure was developed to evaluate the condensed stiffness matrix of vibration isolators required by the vibration of viscoelastic and elastic structures (VVES) program. The procedure was based on a nonlinear finite element program which is able to handle complicated mount geometry and nonlinear effect associated with the static pre-loading. Three practical vibration isolation mount structures were analyzed and satisfactory numerical results were obtained.Published
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