关键词: 正交各向异性体, 圆柱层壳, 自由振动, 加权余量法

Abstract:

Based on the dynamic Von Karman-type equations governing the free flexural vibration of the shell，the weighted residual method is adopted in this paper to have obtained a new method for the free vibration analysis of the orthotropic circular cylindrical shell of laminated composite, The result obtained is in good agreement with that of Werner Soedal's method, In this paper，the method is applied to the numerical calculations and its validity is verified by comparing the natural frequencies in three types of pipes.

Key words: Free vibration, Circular cylindrical shell, rthotropic laminated composite, weighted residual method