Load history dependence in problems of micro-slip evolution

Hemanth Gopal; Larissa Gorbatikh

doi:10.1117/12.542711

29 July 2004 Load history dependence in problems of micro-slip evolution

Hemanth Gopal, Larissa Gorbatikh

Proceedings Volume 5386, Smart Structures and Materials 2004: Damping and Isolation; (2004) https://doi.org/10.1117/12.542711
Event: Smart Structures and Materials, 2004, San Diego, CA, United States

Abstract

A region of micro-slip may develop at the interface of two contacting bodies subjected to compression and shear. Prediction of a slip response to the applied system of loads is of great interest in structural dynamics as shear microdisplacements are found to be a source of energy dissipation in jointed elements. Such prediction is challenged by the fact that slip evolution (and therefore damping of the entire system) is highly influenced by the history of loading. The present study aims to develop memory rules for the generalized contact of two axi-symmetric bodies with an irregularity of shape Arα. At each step of the loading, three characteristic domains are identified in the force space to differentiate different scenarios of the contact response. The tangential and normal compliances are used to obtain the incremental equations in each of these domains that constitute the memory rules for micro-slip evolution.

Citation Download Citation

Hemanth Gopal and Larissa Gorbatikh "Load history dependence in problems of micro-slip evolution", Proc. SPIE 5386, Smart Structures and Materials 2004: Damping and Isolation, (29 July 2004); https://doi.org/10.1117/12.542711

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