Dynamic thermo-mechanical coupled response of random particulate composites: A statistical two-scale method
Dynamic thermo-mechanical coupled response of random particulate composites: A statistical two-scale method
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DOI：
10.1088/1674-1056/23/7/076501
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发表时间：
2014-07
影响因子：
1.7
通讯作者：
Zihao Yang;Yunsai Chen;Zhi-Qiang Yang-;Q. Ma
中科院分区：
文献类型：
--
作者：
Zihao Yang;Yunsai Chen;Zhi-Qiang Yang-;Q. Ma
本文主要研究了随机颗粒复合材料的动态热力耦合响应。在动力耦合问题中同时考虑了惯性项和耦合项。给出了该问题的统计二阶双尺度(SSOTS)分析方法和基于有限元差分方法的算法步骤。对耦合情况和非耦合情况的数值结果进行了比较。结果表明，颗粒对温度、热流密度、位移和应力的耦合效应非常明显，颗粒的微观特性影响着随机复合材料的耦合效应。此外，耦合效应导致温度、热流、位移和应力的变化具有滞后性。
This paper focuses on the dynamic thermo-mechanical coupled response of random particulate composite materials. Both the inertia term and coupling term are considered in the dynamic coupled problem. The formulation of the problem by a statistical second-order two-scale (SSOTS) analysis method and the algorithm procedure based on the finite-element difference method are presented. Numerical results of coupled cases are compared with those of uncoupled cases. It shows that the coupling effects on temperature, thermal flux, displacement, and stresses are very distinct, and the micro-characteristics of particles affect the coupling effect of the random composites. Furthermore, the coupling effect causes a lag in the variations of temperature, thermal flux, displacement, and stresses.