实验──数值综合法确定受载复合材料板的变形场和损伤场

An Experimental-Numerical Synthetical Analysis For Determining Both the Deformation-and the Damage-Field of Composite Plate Loaded

本文根据广义弹脆性损伤理论模型，用综合实验分析和数值计算的方法，确定受载复合材料板的形变场和损伤场。首先用云纹干涉法确定各受损单元的节点位移，再用有限元分析得到这些单元的真实应变和有效应变。由此计算受载各单元的损伤变量和有效弹性系数。最后，根据弹脆性材料的损伤本构关系确定受载复合材料板的真实应力场。

Based on the generalized elastic -brittle damage theoretical model,an experimental-numerical Synthetical method for determining both the deformation-and the damage-field of the composite plate in the loading process has been presented in this paper.The displacements of nodes for damaged elements considered can be obtained using Moire interferometry at firSt and both the real and the effective strain of these elements be secondly calculated from finite element analyais. Then the damage variables and the effectife elastic coefficients of electments considered be estimated.Finally,the real stress fields of the composite plate loaded can be determined from the constitutive relation of damaged elastic material.