摘要
本文作者研究了具任意脱层复合材料梁的单参数振动反分析。基于弹性理论 ,建立了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弯矩剪力平衡条件建立了反分析的特征方程式。综合考虑系统的一阶固有频率和一阶振型 ,通过反分析特征方程式求出某一待定参数。
The delaminated inversion of a composite beam is investigated by the method of model analysis. The basic equations of composite material delaminated beam are built on the basis of elastic theory. The different sizes and positions of delamination are described easily because of the beam being divided into regions. The characteristic equations are established by using the boundary conditions, continuous conditions of the displacements and equilibrium conditions of the shearing force and moment in each region. Considering the first intrinsic frequency and the first vibration shape of the system, one parameter is known by resolving the characteristic equations. Thus, the theoretical basis is provided for non-damage test in engineering.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2002年第5期90-94,共5页
Acta Materiae Compositae Sinica
基金
国家自然科学基金 (19872 0 2 4)
