Statistical Model of Normal Contact Stiffness of Fixed Joint Surface during Unloading after First Loading | Zendy

Donghua Yin | Zendy; Xueliang Zhang | Zendy; Yonghui Chen | Zendy; Guosheng Lan | Zendy; Yanhui Wang | Zendy; Shuhua Wen | Zendy

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Statistical Model of Normal Contact Stiffness of Fixed Joint Surface during Unloading after First Loading

Author(s) -

Donghua Yin,

Xueliang Zhang,

Yonghui Chen,

Guosheng Lan,

Yanhui Wang,

Shuhua Wen

Publication year - 2021

Publication title -

advances in materials science and engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.356

H-Index - 42

eISSN - 1687-8442

pISSN - 1687-8434

DOI - 10.1155/2021/6626727

Subject(s) - materials science , stiffness , joint (building) , surface (topology) , composite material , plasticity , joint stiffness , nonlinear system , structural engineering , geometry , mathematics , physics , quantum mechanics , engineering

Based on Kogut and Etsion’s model (KE model), a statistical method is used to establish a model of normal contact stiffness of fixed joint surface during unloading after first loading. Simulation results show that, for the elastoplastic contact, normal contact stiffness of joint surface is the nonlinear function of mean surface separation during loading and unloading and decreases as the separation increases. For different plasticity indexes, the normal contact stiffness of joint surface varies differently following the change of mean surface separation during loading and unloading.

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