کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
820650 | 906714 | 2012 | 11 صفحه PDF | دانلود رایگان |

Fracture experiments were carried out on continuous fiber polymer matrix laminated composite panels to investigate cohesive, through-the-thickness crack propagation. The experiments were designed to examine curved cracks, resulting from either eccentric loading or non-symmetric specimen geometry with respect to the starter crack. The constitutive description of the observed complex diffused damage zone, which from a continuum viewpoint may be considered a macroscopic crack, involves complex/evolving traction–separation relations and mode-mixity conditions. This paper presents some relevant experimental investigations and their numerical modeling using the variational multiscale cohesive method developed by Rudraraju et al. [21] which is an effective framework for simulating cohesive crack evolution and thereby predicting the residual strength of cracked composite panels.
► We have presented a validated, mesh-independent method to predict crack growth in a fiber reinforced laminate.
► The method is useful for assessing the structural integrity and damage tolerance of composite structural panels.
► The method uses measurable inputs that can be obtained from standard coupon level tests.
Journal: Composites Science and Technology - Volume 72, Issue 10, 8 June 2012, Pages 1064–1074