Effects of Time-step Size on the Efficiency of Discontinious Deformation Analysis
نویسندگان
چکیده
This paper investigates the expected benefits of the implicit time integration scheme in the solution of jointed rock problems. Discontinuous Deformation Analyses (DDA) exploits the unconditional stability of the implicit time integration scheme, and allows the time step size of the solution to be much larger than the critical time step size dictated by the stability requirement of the explicit time integration schemes. This paper discusses the effects of large time step size on the DDA solution of engineering scale jointed rock problems. The findings are numerically verified by comparing the DDA solution to that of the Distinct Element Method (DEM).
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