采用密度过滤技术进一步提高密度场的连续性和光滑性，从而消除了网格依赖性现象。
Combined with density filtering technique to improve the smoothness of density field, the mesh-dependence phenomenon is overcome.
此外，采用传统理论有限元法计算软化材料的局部化问题会出现病态的网格依赖性现象。
Moreover, the pathological mesh-dependency is exhibited when classical finite element method is applied in localization problems of softening materials.
从偏微分方程反问题的角度解释了结构拓扑优化中棋盘格式、网格依赖性等数值不稳定现象的本质。
Form the point view of inverse PDE, the essence of numerical instabilities in the topology optimization is given, including checkerboard pattern and mesh-dependence.
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