A Time-Discontinuous Galerkin Finite Element Method for the Solution of Impact Problem of Gas-Saturated Coal

Figure 7

Comparison of the stress distributions between the Newmark method and the DGFEM. (a) Newmark method 0.001 s, (b) MDGFEM 0.001 s, (c) Newmark method 0.003 s, (d) MDGFEM 0.003 s, (e) Newmark method 0.005 s, and (f) MDGFEM 0.005 s.

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