| 四边形杂交／混合轴对称有限元列式 |
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| 引用本文： | 左德元. 四边形杂交／混合轴对称有限元列式[J]. 西南交通大学学报, 1992, 0(2): 10-16 |
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| 作者姓名： | 左德元 |
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| 作者单位： | 西南交通大学科研处，西南交通大学科研处，美国麻省理工学院宇航系 |
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| 摘 要： | 本文建立了—8—节点四边形轴对称杂交/混合有限单元。该单元不含多余机动模式,无伪剪切现象,能通过补片试验。本单元的各项应力表达式由一次线性完备的应力参数组成,它对坐标取向、单元网格歪斜以及节点编号顺序皆不敏感。数值算例表明,这一单元具有优异的计算精度。
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| 关 键 词： | 轴对称 补片试验 有限元 杂交 混合 |
Finite Element Formulation for an Axisymmetric Hybrid/Mixed Quadrilateral Element |
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| Zuo Deyuan,Cheng Dapeng,Thoedore H.H.Piam Office of Sei.Res.. Finite Element Formulation for an Axisymmetric Hybrid/Mixed Quadrilateral Element[J]. Journal of Southwest Jiaotong University, 1992, 0(2): 10-16 |
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| Authors: | Zuo Deyuan Cheng Dapeng Thoedore H.H.Piam Office of Sei.Res. |
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| Affiliation: | Zuo Deyuan;Cheng Dapeng;Thoedore H.H.Piam Office of Sei.Res. |
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| Abstract: | An 8-node axisymmetric solid-of-revolution hybrid/mixed element with quadrilateral cross-section is proposed, which is free from spurious kinematic mode, capable of avoiding false shear pheno- menon and passing the paten test. In terms of linearly complete stress interpolation, the present 8-node element is not sensitive to coordinate axis orientations, neither to element mesh distor- tions, nor to the so-called numbering effects. Numerical examin- ations clearly demonstrate the remarkable computational accuracy attained with the present element. |
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| Keywords: | axisymmetry hybrid/mixed finite element false shear patch test |
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