The Proceedings of the Dynamics & Design Conference
Online ISSN : 2424-2993
2011
Session ID : 447
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447 Analysis of impact responses for box consisting of elastic plates and damping layers connected by nonlinear springs with hysteresis using finite element method
Suguru OTATakao YAMAGUCHIken-ichi NAGAIShinichi MARUYAMA
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Abstract
This paper describes vibration analysis using finite element method for box consisting of elastic plates and damping layers connected by nonlinear concentrated springs. The restoring force of the springs have cubic nonlinearity and linear hysteresis damping. Finite element for the nonlinear springs are expressed and are connected to the elastic plate modeled by linear solid finite elements in consideration of complex modulus of elasticity. Further, the discretized equations in physical coordinate are transformed into the nonlinear ordinary coupled equations using normal coordinate corresponding to linear natural modes. This transformation yields computation efficiency. We evaluate the influences of the damping layer on the linear/nonlinear impact responses. Moreover, we also investigate the influences of stiffness for the bottom plate in the box on the impact responses.
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© 2011 The Japan Society of Mechanical Engineers
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