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首页> 外文期刊>Journal of thermal stresses >TRANSIENT ANALYSIS OF THERMOELASTIC CONTACT BEHAVIORS IN COMPOSITE MULTIDISK BRAKES
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TRANSIENT ANALYSIS OF THERMOELASTIC CONTACT BEHAVIORS IN COMPOSITE MULTIDISK BRAKES

机译：复合多盘制动器热弹性接触行为的瞬态分析

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摘要

The transient analyses of the thermoelastic contact problem are performed for carbon—carbon composite multidisk brakes subject to mechanical and frictionally excited thermal loads. The finite element method, based on the coupled theory in which displacement and temperature fields are mutually affected, is applied for the numerical simulations. In the present study, to improve the accuracy of computations and stabilize the algorithm, the implicit transient scheme is used for the thermoelastic analysis. The law of action and reaction, Signorini's law of contact, Coulomb's law of friction, and Archard's law of wear are applied to be valid locally at each point for friction surfaces. The computation results are obtained for the antiskid brake conditions and presented for the transient evolution of contact pressure, temperature on each friction surface between the bodies, and thermoelastic deformations. It is also found that the high thermal stresses due to considerable temperature difference during the landing process occur in multidisk brakes.
机译：对经受机械和摩擦激发热负荷的碳－碳复合多盘制动器进行了热弹性接触问题的瞬态分析。基于位移和温度场相互影响的耦合理论的有限元方法被应用于数值模拟。在本研究中，为了提高计算的准确性和稳定算法，隐式瞬态方案用于热弹性分析。作用力和反作用力定律，西诺里尼接触定律，库仑摩擦定律和阿卡德磨损定律在摩擦表面的每个点上都适用。针对防滑制动条件获得了计算结果，并针对接触压力，车身之间每个摩擦表面的温度以及热弹性变形的瞬态演变给出了计算结果。还发现，在多盘制动器中，在着陆过程中由于相当大的温差而产生了高热应力。

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