用拉格朗日等参数单元计算应力强度因子

IMECH-IR > 力学所知识产出(1956-2008)

	用拉格朗日等参数单元计算应力强度因子
	吴永礼
Source Publication	航空学报
	1984
Volume	5 Issue:4 Pages:416-424
ISSN	1000-6893
Abstract	本文证明了在二次或三次拉格朗日等参数单元中,假使边上点和内节点移动适当的位置即可产生奇异性。在标准的拉格朗日等参单元中,使一边缩并成一点,成为三角形单元,再适当的选择边上点和内节点的位置,可以在单元的角点产生奇异性,因而,可以计算应力强度因子。在奇异元外面,适当移动边上点和内节点可以形成过渡元,可得到较精确的结果。通过几个例子表明,用这种奇异元,只要较少的单元数和节点数就能得到较精确的结果。
Keyword	强度因子计算应力拉格朗日等参数单元奇异元过渡元节点数奇异性等参元
Language	中文
Document Type	期刊论文
Identifier	http://dspace.imech.ac.cn/handle/311007/37594
Collection	力学所知识产出(1956-2008)
Corresponding Author	吴永礼
Recommended Citation GB/T 7714	吴永礼. 用拉格朗日等参数单元计算应力强度因子[J]. 航空学报,1984,5,4,:416-424.
APA	吴永礼.(1984).用拉格朗日等参数单元计算应力强度因子.航空学报,5(4),416-424.
MLA	吴永礼."用拉格朗日等参数单元计算应力强度因子".航空学报 5.4(1984):416-424.

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