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首次穿越是随机动力学研究中的一个难点问题.对在随机激励作用下的工程结构系统而言,描述其运动的状态量如能量、位移等物理量在某个时刻首次超过了安全域,就代表着系统发生了破坏,这就是首次穿越的含义,而系统停留在安全域的概率就是其可靠度.
拟哈密顿系统首次穿越破坏的数值求解方法
【摘 要】
：
首次穿越是随机动力学研究中的一个难点问题.对在随机激励作用下的工程结构系统而言,描述其运动的状态量如能量、位移等物理量在某个时刻首次超过了安全域,就代表着系统发生了破坏,这就是首次穿越的含义,而系统停留在安全域的概率就是其可靠度.
【机 构】
：
厦门大学建筑与土木工程学院,厦门 361005
【出 处】
：
第十届全国动力学与控制学术会议
【发表日期】
：
2016年11期
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