冲击载荷作用下板壳结构的可靠性研究
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摘要
根据振动方程得到了板壳结构在冲击载荷作用下的响应及其数字特征,基于首次超越破坏机制,建立了板壳结构在冲击载荷作用下的极限状态方程,采用泊松分布方法分析了动力可靠性。最后以某舰局部甲板承受随机冲击为工程背景,对其板壳结构进行了振动可靠性分析。
On the basis of vibration equation the response and its numerical characteristics of plate shell structure under the action of impact load were obtained. Based on the mechanism of first transcending damage,the limit state equation of plate shell structure under the action of impact load was established. The dynamic reliability was analyzed by the use of Poisson distribution method. Finally,taking the bearing of random impact on partial deck of certain warship as an engineering background the vibration reliability analysis on its plate shell structure was carried out.
On the basis of vibration equation the response and its numerical characteristics of plate shell structure under the action of impact load were obtained. Based on the mechanism of first transcending damage,the limit state equation of plate shell structure under the action of impact load was established. The dynamic reliability was analyzed by the use of Poisson distribution method. Finally,taking the bearing of random impact on partial deck of certain warship as an engineering background the vibration reliability analysis on its plate shell structure was carried out.
引文
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[3]金伟良,郑忠双,李海波.地震荷载作用下海洋平台结构物动力可靠度分析[J].浙江大学学报,2002,36(3):233-238.
[4]张志民.船首底部抨击强度的可靠性分析[D].哈尔滨:哈尔滨工程大学,2001.
[5]陈塑寰,韩万芝,王家林.随机参数结构的响应分析[J].兵工学报,1994(l):47-52.
[6]沙云东,闻邦椿,屈伸.薄壁板在随机声载荷作用下的振动响应谱估算[J].振动与冲击,2007(6):63-66.
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