Constitutive Model of Flexible Composites for Rubber Track

被引：0
|
作者：
Zhao Z. [1 ,2 ]
Mu X. [2 ]
Du F. [2 ]
机构：
[1] Department of Ammunition Engineering, Shijiazhuang Campus, Army Engineering University, Shijiazhuang
[2] Unit 32181 of PLA, Shijiazhuang
来源：
Binggong Xuebao/Acta Armamentarii | 2020年 / 41卷 / 09期
关键词：
Anisotropy; Constitutive model; Fiber reinforced composite; Hyperelastic; Rubber track;
D O I：
10.3969/j.issn.1000-1093.2020.09.003
中图分类号：
学科分类号：
摘要：
The performance of rubber track is one of the key factors affecting the service life of tracked walking mechanism. In order to characterize the mechanical behavior of rubber track with large deformation, nonlinearity and anisotropy in the driving process, the test study of uniaxial tension of rubber-cord composites at different off-axis angles is carried out. The influence of cord off-axis angle on the mechanical properties of the composites is analyzed. A constitutive model involving interaction between rubber and cords is established. Based on the particle swarm optimization and Newton iteration method, an optimization algorithm for parameters fitting is proposed. The model parameters are obtained from the uniaxial tension data with cord off-axis angles of 90°, 0° and 15°. The uniaxial tension data with cord off-axis angles of 45° and 60° are predicted. The results show that the coefficients of determination, R2, are 0.992 8 and 0.982 9, respectively. The proposed model is validated by comparing the numerical results with the uniaxial tension data. The maximum simulation error is about 10.86%, which further verifies the reliability and adaptability of the proposed model to finite element analysis. © 2020, Editorial Board of Acta Armamentarii. All right reserved.
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页码：1719 / 1726
页数：7
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