A Simple Fracture Mechanical Model for Predicting Tensile Strength of an SMC Composite
A Simple Fracture Mechanical Model for Predicting Tensile Strength of an SMC Composite
复制标题
用于预测 SMC 复合材料拉伸强度的简单断裂力学模型
DOI：
10.6089/jscm.36.198
复制
发表时间：
2010
期刊：
影响因子：
--
通讯作者：
M. Yamanouchi
中科院分区：
文献类型：
--
作者：
K. Ogi;M. Yamanouchi
提出了一种预测片状模塑料复合材料拉伸强度的简单模型。基于断裂力学理论，推导了分层和劈裂两种失效模式下的拉伸强度。将预测强度与实验结果进行了比较。结果表明，这两种失效模式均为SMC复合材料的临界强度。用分裂模的理论强度解释了试样宽度的依赖关系。此外，它是建议，较小的尺寸的股，确定的初始损伤的大小给出较大的拉伸强度。
A simple model for predicting tensile strength of a sheet molding compound (SMC) composite was proposed. The tensile strength associated with two failure modes, delamination and splitting, was derived based on fracture mechanics. The predicted strength was compared with experimental results. It was proved that the both failure modes provide the critical strength in the present SMC composite. The dependence of specimen width was explained by the theoretical strength for the splitting mode. In addition, it is suggested that smaller size of strands that determine the size of initial damages gives larger tensile strength.