Performance of a Hermitian element for a beam with rotational constraints
作者:
K. Wisniewski,
E. Turska,
B. A. Schrefler,
期刊:
Communications in Numerical Methods in Engineering
(WILEY Available online 1993)
卷期:
Volume 9,
issue 1
页码: 27-34
ISSN:1069-8299
年代: 1993
DOI:10.1002/cnm.1640090107
出版商: John Wiley&Sons, Ltd
数据来源: WILEY
摘要:
AbstractThe behaviour of a Hermitian two‐node element based on the Bernoulli beam equation is examined. The assumed constraints generate rotation‐dependent distributed moments. It is shown that for these moments a potential exists, and that a rigid translation is the only rigid body mode of the element. The analysis of the Bernoulli equation demonstrates that very large values of α=e/EIenforce the conditionw,x= 0, resulting in displacements equal to zero. The element is examined for two types of constraints. The first type of constraint, diminishing rotations of a beam (α0), a highly oscillatory nature of the solution i
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