摘要
本文对纤维增强层合板振动问题的近似解法作了探讨。文中采用三次B样条函数与梁函数之积的级数怍为试函数,或用梁函数之积的级数作试函数,用Ritz法解这类板的固有振动问题并与三维有限元计算结果及实验结果作了比较。通过不同宽长比、不同纤维方向、不同边界条件的复合材料梁、板的共振实验,以及梁理论、板理论的计算,可以看出:纤维增强梁的自振特性随宽长比的增大由简单变得复杂;梁理论的适用界限与纤维铺设方式及界条件有关。文中给出了初步结果。
Ritz's method is used to solve the vibration problems of fiber reinforced laminated plates with the trial group of functions composed of B cubic spline functions. Results of tests and three dimensional finite element analysis are used for comparison. It is clear that the characteristics of vibration of laminated plates become complex as the value of width/length increases. Limitation of application of beam theory is dependent on the stacked sequence and boundary conditions of the laminates. Preliminary results are given.
出处
《地震工程与工程振动》
CSCD
北大核心
1989年第4期51-59,共9页
Earthquake Engineering and Engineering Dynamics
