| 六面体单元内力影响面的实用算法 |
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| 引用本文： | 周小勇,李娜.六面体单元内力影响面的实用算法[J].公路交通科技,2011,28(8):85-89. |
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| 作者姓名： | 周小勇 李娜 |
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| 作者单位： | 1. 中国地质大学,湖北武汉,430074
2. 华中科技大学文华学院,湖北武汉,430074 |
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| 基金项目： | 中央高校基本科研业务费专项资金项目(2010059020) |
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| 摘 要： | 根据虚功原理,利用8节点六面体单元刚度矩阵的物理特性以及结构内力影响面的概念,推导出实体单元模型下指定位置内力影响面的有效算法,该算法可普遍适用于各类实体单元,并提出用NURBS自由造型曲面进行影响面的数学建模和图形输出.算例结果表明,该方法与传统方法计算结果完全吻合,能极大地节约计算工作量.该算法实现了桥梁结构实体模...
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| 关 键 词： | 桥梁工程 影响面 六面体单元 虚功原理 非均匀有理B样条 |
Algorithm for Internal Force Influence Surface of Hexahedral Element Model |
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| ZHOU Xiaoyong,LI Na.Algorithm for Internal Force Influence Surface of Hexahedral Element Model[J].Journal of Highway and Transportation Research and Development,2011,28(8):85-89. |
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| Authors: | ZHOU Xiaoyong LI Na |
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| Institution: | ZHOU Xiaoyong1,LI Na2(1.China University of Geosciences,Wuhan Hubei 430074,China,2.Wenhua College,Huazhong University of Science and Technology,China) |
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| Abstract: | According to virtual work principle,by use of physical property of stiffness matrix of 8-node hexahedral element and concept of structural internal force influence surface,an effective algorithm for calculating internal force influence surface of designated position in solid element model was deduced.It can be generally applied to different solid elements and the feasibility of the algorithm was verified.A mathematical modeling and graphics output method were also presented by using Non-uniform rational B-s... |
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| Keywords: | bridge engineering influence surface hexahedral element virtual work principle Non-uniform rational B-spline |
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