单层球面网壳的动力特性及等效刚度

【作者】 米婷； 罗永峰； 张志刚；

【机构】 中鼎工程集团； 同济大学建工系；

【摘要】 用于空间迭代法求解六种常用单层球面网壳在矢跨比为0．1、0.2、0．3时的前20阶频率。并根据物理条件等效原则计算各网壳在第一振型下的等效薄膜刚度和等效弯曲刚度。从而找到单层球面网壳的自振频率与等效刚度的关系。更多还原

【Abstract】 By means of sub-space interation method, the preceding twenty frequencies of six reticulated shell systems are calaulated when the ratio of height to span is 0. 1、 0. 2、0. 3 respectively, and based on the principle of equivalent physics condition, equivalent membrane stiffness and equivalent inflexion stiffness of six reticulated shell systems under the first fluctuating mode are calaulated. The relation between free-vibration frequency of single-layer reticulated shell and equivalent stiffness is found.更多还原