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首页> 外文期刊>Computers & Structures >Highly efficient solid and solid-shell finite elements with mixed strain-displacement assumptions specifically set up for explicit dynamic simulations using symbolic programming
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Highly efficient solid and solid-shell finite elements with mixed strain-displacement assumptions specifically set up for explicit dynamic simulations using symbolic programming

机译：具有混合应变-位移假设的高效实体和实体壳有限元专门为使用符号编程的显式动态仿真而设置

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摘要

The method of incompatible modes is applied to volumetric elements and so-called solid-shell elements with linear interpolation as an alternative to the well known method of enhanced assumed strains in order to reduce artificial stiffness effects. The incompatible modes are directly adjoint to known EAS elements. In the context of explicit time integration, the incompatible degrees of freedom are treated as regular unknowns with associated modal masses and incorporated into the global equations instead of being condensed-out locally decreasing the computational effort. The issue of artificial kinetic energy is briefly discussed. Further the implementation concept applying symbolic programming is described. (C) 2015 Elsevier Ltd. All rights reserved.
机译：不相容模式的方法应用于具有线性插值的体积单元和所谓的固体单元，以替代众所周知的增强假定应变的方法，以减少人工刚度效应。不兼容的模式与已知的EAS元素直接相邻。在显式时间积分的情况下，不兼容的自由度被视为具有相关联的模态质量的常规未知数，并被合并到全局方程中，而不是被局部压缩而减少了计算量。简要讨论了人造动能的问题。进一步描述了应用符号编程的实现概念。 （C）2015 Elsevier Ltd.保留所有权利。

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