Isogeometric refined quasi-convex meshfree method
, 2016 采用等几何B样条基函数的多项式再生条件对无网格形函数的多项式再生条件进行了修正,使得无网格形函数的负值部分明显减少,在域内趋于非负函数,即等几何修正准凸无网格形函数。该准凸无网格形函数仍然具有与传统再生核无网格形函数相似的构造形式,数值实现比较便捷,同时该准凸无网格形函数的多项式再生条件具有准确的修正系数,无需引入额外的人工节点松弛参数。更重要的是,等几何修正准凸无网格形函数可在确保形函数高阶光滑的前提下减小相对支持域,提高计算效率。最后 ...
王东东, 张汉杰, 梁庆文
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