Abstract
Present study reports a comparison of stress, failure and failure growth behaviour of polyvinyl chloride (PVC) and fiber reinforced plastic (FRP) made pipe socket joints. Finite element based Ansys codes have been developed and validated with experiment and literature based analytical results. Various stress based failure criteria (parabolic yield criterion, and Tsai-Wu failure criteria), and Strain Energy Release Rates (SERRs) as the fracture parameters determined using Virtual Crack Closure Technique (VCCT) have been used to simulate the onset of failure and its growth, respectively. Stress and failure analysis suggested, the pipe-adhesive interface at the junction of the joints to be the most vulnerable location for failure under internal pressure. Pre‐embedded adhesion failure growth along the axial length and circumferential width has been simulated. Adhesion failure growth in axial direction was found more susceptible to mode I failure whereas mode III was dominating in circumferential direction. It was also evident from the studies that axial direction is the dominating direction for adhesion failure growth. Unidirectional ply [90]4 was observed to be the optimum stacking sequence for adhesion failure growth resistance.
Published Version
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