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在热冲击下弹性梁非线性热局部屈曲

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Indexed by:期刊论文

Date of Publication:2010-04-15

Journal:兵工学报

Included Journals:PKU、ISTIC

Issue:S1

Page Number:131-135

ISSN No.:1000-1093

Key Words:弹性梁;热冲击;热屈曲;辛本征解;大变形

Abstract:研究了弹性梁在热冲击下的热传导过程和大变形下的后屈曲行为。采用Hamilton体系下的辛本征解基描述屈曲模态,并用辛本征解展开方法对非线性的后屈曲问题进行探讨。提出了一种数值计算方法。研究结果揭示了梁后屈曲的整个变化过程。结果还表明屈曲变形过程依赖热冲击强度、热传导系数和梁的参数等。

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