A UNIFORM STRAIN HEXAHEDRON AND QUADRILATERAL WITH ORTHOGONAL HOURGLASS CONTROL
A UNIFORM STRAIN HEXAHEDRON AND QUADRILATERAL WITH ORTHOGONAL HOURGLASS CONTROL
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DOI：
10.1002/nme.1620170504
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发表时间：
1981-01-01
影响因子：
2.9
通讯作者：
BELYTSCHKO, T
中科院分区：
文献类型：
--
作者：
FLANAGAN, DP;BELYTSCHKO, T
零能量模式，由于一阶等参有限元的一点积分出现的处理。精确隔离这些模式的任意几何形状的方法。两个沙漏控制方案，粘性和弹性，提出和检查。此外，一个方便的一点积分方案，分析集成的单元体积和均匀应变模式。
The treatment of zero energy modes which arise due to one‐point integration of first‐order isoparametric finite elements is addressed. A method for precisely isolating these modes for arbitrary geometry is developed. Two hourglass control schemes, viscous and elastic, are presented and examined. In addition, a convenient one‐point integration scheme which analytically integrates the element volume and uniform strain modes is presented.