【作者】 李学斌； 刘土光；

【Author】 LI Xue-bin, LIU Tu-guang(College of Traffic Science and Engineering, Huazhong University of Science and Technology,Wuhan 430074, China)

【机构】 华中科技大学交通科学与工程学院；

【摘要】 本文依据Flugge壳体理论,从正交各向异性圆柱壳在轴向压力作用下的自由振动平衡方程出发,推导出在简支边界条件下壳体自由振动的特征方程,分析了正交各向异性圆柱壳在轴向压力作用下的稳定性和自由振动特性,详细讨论了壳体几何参数和材料特性参数以及轴向压力对于自振频率的影响,给出了最低频率随L/R变化的包络线。本文还使用Timoshenko壳体理论进行了比较分析。更多还原

【Abstract】 Buckling and free vibration study on an orthotropic circular cylindrical shell subjected to axial load is presented in this paper. For simply supported boundary conditions at both ends, the resulting eigen equations about pressure and frequency are given. The effects of shell’s parameters (L/R, h/R) and material properties on the free vibration characteristics have been studied. Differences between Love-Timoshenko, Donnell equations and that of Flugge theory are examined too.更多还原