Optimization of elastoplastic behavior of contact interface for improved contact stress distribution

The elastoplastic behavior of the contact interface, powerfully influencing the contact stress distribution, is investigated to reinforce the uniformity of the contact stress distribution in this paper. Since the contact interface elastoplastic behavior has predominant and direct effects on contact...

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Bibliographic Details
Published in:Mechanics of advanced materials and structures 2023-02, Vol.30 (4), p.803-813
Main Authors: Zhou, Yicong, Lin, Qiyin, Li, Wanpeng, Yue, Ting, Yan, Jialin, Hong, Jun
Format: Article
Language:English
Subjects:
Algorithms
Contact interface
contact stress
Contact stresses
Deformation effects
distributing uniformity
elastoplastic behavior
Elastoplasticity
Optimization
Optimization algorithms
Stress distribution
Yield criteria
yield strength
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Summary:The elastoplastic behavior of the contact interface, powerfully influencing the contact stress distribution, is investigated to reinforce the uniformity of the contact stress distribution in this paper. Since the contact interface elastoplastic behavior has predominant and direct effects on contact deformation, whereas different contact deformation distributions can result in completely different contact stress distributions, it is theoretically feasible to enhance the uniformity of the contact stress distribution by optimizing the contact interface elastoplastic behavior. To realize this aim, a heuristic-based elastoplastic behavior optimization algorithm is developed, in which the elastoplastic behavior of the contact interface is optimized by changing the yield strength of the materials around contact interface. The uniformity of the contact stress is represented by its variance, and is defined as the objective function. Bilinear material model and von Mises yield criterion are adopted. Two contact cases are presented to evaluate the effectiveness of the proposed elastoplastic behavior optimization algorithm in terms of improving the uniformity of the contact stress. Some new phenomena during the elastoplastic behavior optimization are also observed and explained.
ISSN:1537-6494
1537-6532
DOI:10.1080/15376494.2021.2024926