Finite element analysis of PVC coated biaxial warp knitted fabric under multiaxial loads

For better understanding the force being exerted during the precracked tearing process of PVC coated biaxial warp knitted fabric under multiaxial loads and providing a theoretical reference for assessing and predicting the property of composites,finite element analysis method was used to analyze and compute the force being exerted during the precracked tearing process of PVC coated biaxial warp knitted fabrics under multiaxial tensile loads,in particular to simulate and compute the stress resulting from the initial precracked tears with different lengths,and the stress value and contour plots of the model were obtained.The results show that the maximal equivalent stress increases with the increase of initial crack length.Whatever the initial crack orientation is,the stress concentration is shown at the crack tips.It is found that these laws are in good agreement with those derived from experimental values of specimens.