摘要
本文对具任意脱层的复合材料梁进行了模态分析。基于弹性理论建立了考虑剪切变形时复合材料脱层梁的基本方程式。对脱层梁进行了分区处理 ,方便地描述了脱层长度、脱层位置。利用边界条件、区间位移连续性条件和内力平衡条件建立了梁模态分析的特征方程式。通过实例计算 ,得出了不同脱层位置和不同脱层长度对脱层梁模态分析的影响。
In the paper,the modal analysis of compostie beams with arbitrary delamination is investigated.with considering the transverse shear,the govrning equations are built on the basis of elasticity theory.The different sizes and positions of delamination are described in accordance with the different regions devided in the beam.The characteristic equations in modal analysis are established by using the boundary conditions,continuous conditions of the displacements and equilibrium conditions of the shearing forces and moments in each region.The effects of different positions and sizes of delamination on modal analysis of beams are given in examples.
出处
《振动与冲击》
EI
CSCD
北大核心
2002年第2期15-17,10,共4页
Journal of Vibration and Shock
基金
国家自然科学基金 (1 9872 0 2 2 4 )资助项目
