多孔介质动力应变局部化分析的梯度塑性模型

针对数值结果的网络依赖性在多孔介质动力渗流应变局部化有限元分析中同样存在的这一问题进行了讨论。采用梯度塑性模型对该问题进行处理，推导并给出模型所对应的内长度比例参数，对于数值求解，建立了用于软化问题分析二次规划算法，一维模型的数值结果证明了所提出的理论及算法。

Gradient dependent model for strain localization analysis of porous media

The result mesh sensitivity problem could also be found in the problems of dynamic strain localization analysis of seepage porous media. This problem is discussed here and a plastic gradient dependent model is proposed to overcome this difficulty. The internal length scale corresponds to the new model in the material is derived and a parametric quadratic programming method is put forward for the solution of strain softening problems. One dimensional example is shown to demonstrate the validity of the theory and algorithm presented.