计算数学
計算數學
계산수학
MATHEMATICA NUMERICA SINICA
1999年
2期
225-236
,共12页
流体弹塑性介质%波动%断裂%Riemann问题%Godunov方法
流體彈塑性介質%波動%斷裂%Riemann問題%Godunov方法
류체탄소성개질%파동%단렬%Riemann문제%Godunov방법
Hydro-elasto-plastic body%Wave%Fracture%Riemann pro-blem%Godunov method
A finite difference method isproposed for modeling wave motion and fracture phenomenonin hydro-elasto-plastic bodies. The method is aGodunov type approach, and it has second-order accuracyand captures shocks and fracture zones with high resolution.In the class of given wave systems the Riemann problemsinvolved in the method have unique solutions,and the solutions can be obtained with efficientprocedures. Numerical results are satisfactory incomputations of Riemann problems and spallationin a steel plate.
