Abstract: The present study deals with the use of cohesive zone model to predict crack initiation load in throughwall circumferentially cracked pipes. Crack propagation is first simulated using 2D Cohesive Zone Model (CZM) on a three point bend (TPB) specimen to determine the set of cohesive parameters. The same sets of parameters are used to predict the initiation of crack in throughwall circumferentially cracked pipes by 3D finite element analysis. The pipes were modelled using shell-solid coupling to save computational time and memory. The study predicted crack initiation load for three pipe configurations using 3D CZM with an error of 6 to12%.
 
Key words: Cohesive zone model, crack initiation, fracture, pipes.

Cite: Rehan.M.Siddiqui, Dattatray.N.Jadhav, and Nilesh.R.Raykar, "Prediction of Crack Initiation Load in Throughwall Circumferentially Cracked Pipes Using 3D Cohesive Zone Model," International Journal of Materials Science and Engineering, Vol. 3, No. 3, pp. 183-192, September 2015. doi: 10.17706/ijmse.2015.3.3.183-192