【摘要】 采用ＳＡＰ５程序分别计算出悬臂板结构和在其上模拟９种不同形式裂纹板的固有频率、位移模态、结构应变模态等模态参数．定性分析了由裂纹引起的固有频率的相对改变量与应变模态间的关系．更多还原

【Abstract】 The SAP5 program is employed to solve the natural frequencies and displacement mode and strain mode of a cantilever plate.A compution for a perfect plate is done first,nine cases of a sloted plate are followed.Made is a research of the relationship between the value of strain mode of a cantilever plate and the quantity of relative change its natural frequency resulted from a slot on it.更多还原