A Novel Methodology for Calculating Crack Opening Stress under Tension-Compression Cyclic Load

<div>The finite element model of CT specimen. According to the size of plastic zone, the specimen is divided into seven intervals along the length direction. Based on the benchmark node of crack tip, 20 nodes are arranged in the plastic zone before crack tip node, and 30 nodes are arranged in the adjacent transition zone, as shown in the enlarged local view. In the rest of four intervals, the number of nodes per unit length is gradually reduced. (a) Global mesh dimensions; (b) local mesh dimensions.</div>

Advances in Materials Science and Engineering

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Figure 2

Figure 2: A Novel Methodology for Calculating Crack Opening Stress under Tension-Compression Cyclic Load 