کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
514689 | 866794 | 2011 | 13 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Transition finite element families for adaptive analysis of axisymmetric elasticity problems Transition finite element families for adaptive analysis of axisymmetric elasticity problems](/preview/png/514689.png)
In this paper, four transition element families that comprise five- to seven-node quadrilateral elements are developed based on the hybrid-stress and enhanced assumed strain (EAS) formulations for adaptive analyses of axisymmetric elasticity problems. For members in the first hybrid-stress family, a quasi-linear stress field with ten equilibrating stress modes is derived and employed. To study the effect of including more stress modes in the assumed stress field, another family with two additional stress modes is implemented. On the other hand, two EAS element families are constructed with respect to the incompatible displacement modes of two existing incompatible displacement transition element families. Several numerical examples are exercised. It can be seen that the first hybrid-stress family is the most accurate one among the proposed families. Moreover, the EAS families are close to the respective incompatible families in accuracy yet the former families are not only more efficient in computation but also more concise in formulation.
Journal: Finite Elements in Analysis and Design - Volume 47, Issue 4, April 2011, Pages 360–372