弹性体受热冲击作用的热力耦合特性分析

王颖泽; 宋新南

doi:10.3969/j.issn.1671-7775.2014.02.011

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江苏大学学报（自然科学版） ›› 2014, Vol. 35 ›› Issue (2) : 183-188. DOI: 10.3969/j.issn.1671-7775.2014.02.011

论文

弹性体受热冲击作用的热力耦合特性分析

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Thermo-mechanical coupling characteristics on elastic solid subjected to thermal shock

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摘要

考虑快速加热过程中的延迟效应和耦合效应,基于广义热弹性理论,建立了热冲击下描述弹性体热力耦合特性的热弹性动力学模型．借助于Laplace变换,推导了热作用初期一维热弹性响应的瞬时解．通过对弹性体内各物理场的求解分析,给出了热弹性波在弹性体内部的传递规律,以及延迟效应和耦合效应对热弹性响应的影响．结果表明:在快速加热条件下,延迟效应的存在削弱了热冲击的作用效果,而耦合效应则在影响热弹性波在弹性体内传播的同时也在一定程度上减弱了延迟效应对热冲击的削弱效果．

Abstract

With the considerations of delay effect and coupling effect， the thermoelastic dynamic model was established based on the generalized thermoelasticity. The short-time analytical solutions for one-dimension thermal shock problem were deduced according to Laplace transform and inverse transform. Numerical simulation was conducted to discuss the transmission of thermoelastic wave in elastic solid and the influence of delay and coupling effects on the thermoelastic response. The results show that the thermal shock is weakened by delay effect, while this weaken effect can be restrained by coupling effect to some extent during the transient heat conduction.

导出引用

王颖泽, 宋新南. 弹性体受热冲击作用的热力耦合特性分析[J]. 江苏大学学报（自然科学版）, 2014, 35(2): 183-188 https://doi.org/10.3969/j.issn.1671-7775.2014.02.011

WANG Ying-Ze, SONG Xin-南. Thermo-mechanical coupling characteristics on elastic solid subjected to thermal shock[J]. Journal of Jiangsu University(Natural Science Edition), 2014, 35(2): 183-188 https://doi.org/10.3969/j.issn.1671-7775.2014.02.011

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