9/15/2023 0 Comments For honor crack only![]() During the process where the crack tip advances from one node to another node, the abrupt increase of crack length and sudden release of displacement restraint leads to a relatively serious high-oscillation phenomenon in the finite element solutions. In general, the crack propagation velocity is obviously lower than the wave speed at time increment Δ t, the crack actually advances only at some position between two nodes. ![]() In order to obtain a relatively accurate solution, a rather small time increment Δ t must be adopted, which was usually taken to propagate the expansion wave between the nearest two nodes of the element. In the time increment Δ t, the crack tip jumped from one node to another node of the elements along the crack direction. In the early stages, when the finite element method was applied to simulate dynamic crack propagation, crack advance was modeled by discontinued jumping. 3.3.1 Solution Based on Nodal Force Release Therefore, a large number of problems rely on numerical analysis methods. There are currently only a small number of analytical solutions adopted to analyze dynamic crack propagation, and in these many assumptions are made for the material properties, loading conditions, crack geometry, and movement. Jianhui Liao, in Extended Finite Element Method, 2014 3.3 Crack Driving Force Computation
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