【摘要】 该文从理论上研究了受面内拉压载荷作用下裂纹板的振动问题。考虑各种参数,比如裂纹的长度、边界条件、载荷等对基频的影响。其结果与有限元进行了对比分析,得出频率随面内拉力的增大而增大,但随面内压力的增大而减小;此外,裂纹的尺寸与边界条件对频率的影响在文中也进行了详细的分析。更多还原

【Abstract】 The vibration of cracked plates subjected to in-plane tensile or compressive load is theoretically analyzed.The fundamental natural frequencies of the problem varying with crack lengths,different boundaries and in-plane loads obtained from this study agree well with the solution of finite element method.Under tensile load,the results show that the frequency of the plate increases with the load,but decreases as the load increases under compressive load.The crack sizes and boundary conditions have a significant effect on the vibration of the plate with a central crack under both compressive and tensile load.The effects of these parameters are discussed in detail.更多还原