摘要
横向基体开裂和分层损伤是正交层板复合材料的主要损伤类型．与现有完全抛物线剪切滞后分析模型不同，本文提出了包含横向开裂裂尖引起分层损伤的完全抛物线模型．依此模型计算了材料的刚度衰减，并与不包含分层的完全抛物线、不完全抛物线等剪切滞后分析模型预测结果作了计算比较.结果表明，在应力较高的情况下，本文提出的分析模型所得的预测结果与实验值符合得最好．
A complete parabolic shear-lag model containing delamination damage induced by transverse cracks was proposed and applied to predict the stiffness reduction by transverse cracking in cross laminated composite materials. The relation of stress and transverse crack density was also studied. The predictions from the incomplete parabolic shear-lag analysis model, the complete parabolic shear-lag analysis model and the analysis model proposed in this paper have been compared. Results show that the Young's modulus reduction values obtained by our analysis model are better agreement with the experimental ones than other models.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
2001年第10期1027-1030,共4页
Acta Metallurgica Sinica
