US—FE—LSPIM四边形单元性能进一步研究

摘要

This paper pointed out that the US-FE-LSPIM quadrilateral element had higher calculation accuracy, further researched the static per formance of this unit, the numerical examples showed that the US-FE-LSPIM quadrilateral element could maintain good accuracy in mesh distor tion, and had strong resist shear self-locking and volume self-locking performance.%指出US—FE-LSPIM四边形单元具有较高的计算精度，进一步研究了该单元的静力性能，数值算例显示us—FE·LSPIM四边形单元在网格畸变时能保持良好的精度，并且具有较强的抗剪切自锁和体积自锁的性能。