| 无界域动力响应问题的有限单元法 |
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| 引用本文： | 韩晓雷,吕康成.无界域动力响应问题的有限单元法[J].西安建筑科技大学学报(自然科学版),1994(3). |
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| 作者姓名： | 韩晓雷 吕康成 |
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| 作者单位： | 西安建筑科技大学建筑工程系，西安矿业学院建筑工程系 |
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| 摘 要： | 在线弹性理论和动力问题有限单元法基本理论的基础上，完成了Ｎｅｗｍａｒｋ法和位移三点递推法求解线弹性无界域动力响应问题的８节点等参数单元微机计算程序，建立了平面问题和轴对称问题的统一求解格式；建立起了简化的无界元刚度、质量矩阵计算模式，并推导出了新的适应于矩形无界元的“惯性力刚度矩阵”。
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| 关 键 词： | 有限元法 等参单元 惯性力 刚度矩阵 凝聚质量 |
FEM for dynamic analysis alout infinite domain |
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| Han Xiaolei, Lu Kangcheng.FEM for dynamic analysis alout infinite domain[J].Journal of Xi'an University of Architecture & Technology,1994(3). |
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| Authors: | Han Xiaolei Lu Kangcheng |
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| Abstract: | Based upon elasto-dynamics and the fundamentals of FEd, this paper designs aFEM program, in which the isoparametric elements with eight nodes is used, for elasticand dynamic problems with infinite boundary by using Newmarks, and "the three-parameter method", and establishes a formulation both for two-demensional and also foraxisymmetric problems and also establishes the simplified arithmetic model for the stiffand mass matrixes of quadrilateral four-node infinite elements. A new inertiaforce stiffness metrix compatible with the Lumped mass matrix is derived for rectangular infiniteelements. |
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| Keywords: | finite element methods (FEM ) isoparametric elements inertiaforcestiffness matrix /lumped mass |
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