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首页> 外文期刊>International journal of structural stability and dynamics >BUCKLING AND FREE VIBRATION BEHAVIOR OF AN ISOTROPIC PLATE UNDER NONUNIFORM THERMAL LOAD
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BUCKLING AND FREE VIBRATION BEHAVIOR OF AN ISOTROPIC PLATE UNDER NONUNIFORM THERMAL LOAD

机译:非均匀热载荷下各向同性板的屈曲和自由振动行为

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摘要

This paper presents numerical simulation studies on buckling and free vibration characteristics of isotropic plates under arbitrarily varying temperature distributions using finite element method (FEM). First the critical buckling temperature is obtained, followed by modal analysis considering pre-stress due to the thermal field in the plate, with the critical buckling temperature as a parameter. It is found that anti-nodal position of the fundamental buckling mode appears awayear to the free edge when the free edge is exposed to minimum/maximum temperature of the variation. The nodal and anti-nodal lines of free vibration modes moves towards the high temperature exposed plate and nodal lines becomes a nodal area for longer plates.
机译:本文利用有限元方法对温度分布任意变化的各向同性板的屈曲和自由振动特性进行了数值模拟研究。首先获得临界屈曲温度,然后以临界屈曲温度作为参数,然后考虑由于板中的热场而产生的预应力,进行模态分析。发现当自由边缘暴露于变化的最小/最高温度时,基本屈曲模式的反节点位置看起来远离/接近自由边缘。自由振动模式的节点线和反节点线朝着暴露于高温的印版移动,而节点线则成为较长印版的节点区域。

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