On hybrid stress, hybrid strain and enhanced strain finite element formulations for a geometrically exact shell theory with drilling degrees of freedom

被引:0
|
作者
Sansour, C
Bocko, J
机构
[1] TH Darmstadt, Fachgebiet Maschinenelemente & Akust, D-64289 Darmstadt, Germany
[2] Tech Univ Kosice, Dept Tech Mech & Elastic, Kosice 04200, Slovakia
关键词
shell theory; drilling degrees of freedom; hybrid finite elements; enhanced finite elements;
D O I
10.1002/(SICI)1097-0207(19980915)43:1<175::AID-NME448>3.3.CO;2-0
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The paper is concerned with the finite element formulation of a recently proposed geometrically exact shell theory with natural inclusion of drilling degrees of freedom. Stress hybrid finite elements are contrasted by strain hybrid elements as well as enhanced strain elements. Numerical investigations and comparison is carried out for a four-node element as well as a nine-node one. As far as the four-node element is concerned it is shown that the stress hybrid element and the enhanced strain one are equivalent. The hybrid strain formulation corresponds to the hybrid stress formulation only in shear dominated problems, that is the case of the plate. (C) 1998 John Wiley & Sons, Ltd.
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页码:175 / 192
页数:18
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