材料科学与工程学报2011，Vol.29Issue(5)：780-785,779,7.
双轴载荷下缝合层板的强度预测
Strength Prediction of Stitched Laminates under Biaxial Loads
摘要
Abstract
A representative volume element based on micromechanical model was presented to investigate the tensile,compressive and shear strengths of the stitched lamina.A multi-axial laminate model was built based on the classical laminate theory with the consideration of the difference between external layers and internal layers after stitching.The progressive damage process of the laminates under biaxial loads was analyzed with ABAQUS and the damage mechanisms were proclaimed in detail.The initial and final failure envelopes of the laminate and stress-strain curves under various biaxial loads were obtained.The predicted failure modes and strengths were in accordance with the experimental results,excellently.According to the analysis,single layers of stitched lamina show shear non-linearity under pure shear loads.Multi-axial stitched laminate reveals a strong interrelation between the two directions of loads.关键词
缝合层板/剪切非线性/复合材料/双轴载荷/强度预测Key words
stitched laminate/shear non-linear/composites/biaxial load/strength prediction分类
通用工业技术引用本文复制引用
许昌,许希武,李晨..双轴载荷下缝合层板的强度预测[J].材料科学与工程学报,2011,29(5):780-785,779,7.基金项目
国家自然科学基金资助项目 （）
