复杂应力对结构功率流的影响

doi:10.16183/j.cnki.jsjtu.2017.09.005

摘要/Abstract

摘要： 基于Kirchhoff平板理论，利用特定阶模态的正交性推导含复杂应力的结构功率流解析式，用于计算含任意分布应力的结构功率流，并通过数值算例验证了所推导的结构功率流解析式的正确性.同时，利用结构功率流解析式分析某焊接平板的复杂应力对结构速度场和内力场以及功率流的影响.结果表明，复杂应力对焊接平板功率流的影响比对其速度场和内力场的影响更大.在实际工程的振动预测及控制中，应考虑应力因素的影响.

关键词: , 结构；应力；振动；功率流

Abstract: Based on the Kirchhoff plate theory, the orthogonality of specific order modes is used to derive the power flow equation of complex stressed structure, which can help to calculate the power flow of the structure with arbitrary stress distribution. The equation is validated by the numerical examples. Meanwhile, the influences of welding stress on a vibrating plate’s velocity, structural internal force and power flow are obtained. The results show that the influence of stress on power flow is more significant than velocity and internal force field. It should be taken it into account in actual engineering vibration prediction and reduction.

Key words: structural; , stress, vibration, power flow

中图分类号:

杨念，易宏. 复杂应力对结构功率流的影响[J]. 上海交通大学学报（自然版）, 2017, 51(9): 1050-1057.

YANG Nian,YI Hong. Influence of Complex Distributed Stress on Structural Power Flow
[J]. Journal of Shanghai Jiaotong University, 2017, 51(9): 1050-1057.

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