摘要
研究了根部含裂纹悬臂矩形弹性薄板的动力特性。讨论了由窄裂缝代替裂纹，将裂缝边缘作为自由边界处理的可行性，继而导出了一种用常规有限元求解含裂纹悬臂板固有特性的处理方法，并计算出不同裂纹长度时板的固有频率，其结果与实验值吻合良好。说明了用计算频率可以代替裂纹扩展的监控。
The paper is mainly about the dynamic behaviour of the cantilever elasticity plate of the foot with a crack. It discusses the feasibility of replacing the crack with a narrow gap and taking the crack edging as the free boundary. A method to divide the element using the finite element method to calulate the inherent frequency was given and it can also be used to measure the inherent frequency of various kinds of crack lengths. The result is in comformity with the experiment. A method is given in monitor the extending of the cracks.
出处
《西安公路交通大学学报》
CSCD
北大核心
1997年第4期67-70,共4页
Journal of Xi'an Highway University
关键词
弹性薄板
裂纹
有限元
动力特性
elastic plate, crack, inherent frequency, finite element method, monitor
