Virtual Material Model of Joint Interfaces Considering Elastic-Plastic Deformation of Asperities

Li Gang Cai; Teng Yun Xu; Yong Sheng Zhao

doi:10.4028/www.scientific.net/AMM.457-458.257

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 457-458Virtual Material Model of Joint Interfaces...

Virtual Material Model of Joint Interfaces Considering Elastic-Plastic Deformation of Asperities

Abstract:

A virtual material model of joint interfaces was established based on the Hertz contact theory and fractal theory, this model was improved by considering the influence of the elastic-plastic deformation of asperities and ameliorating the calculation methods of the elastic modulus. The simulation results of elastic-plastic considered and elastic-plastic unconsidered were compared, moreover, the finite element simulation results and experimental results were compared to fully explain the necessity of considering the influence of the elastic-plastic deformation and the the correctness of the method to calculate the elastic modulus. The research suggested that under a same load the elastic modulus of the model considering the influence of the elastic-plastic deformation was slightly larger than the un considering one, which means it could describe the characteristics of joint interfaces more accurately.

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Periodical:

Applied Mechanics and Materials (Volumes 457-458)

Pages:

257-261

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.457-458.257

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Online since:

October 2013

Authors:

Li Gang Cai*, Teng Yun Xu, Yong Sheng Zhao

Keywords:

Elastic Modulus, Elastic-Plastic Deformation, Joint Interfaces, Virtual Material Model

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