| 计算结构极限载荷的修正弹性补偿法 |
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| 引用本文： | 杨璞, 刘应华, 袁鸿雁, 岑章志. 计算结构极限载荷的修正弹性补偿法[J]. 工程力学, 2006, 23(3): 21-26. |
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| 作者姓名： | 杨璞 刘应华 袁鸿雁 岑章志 |
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| 作者单位： | 清华大学工程力学系, 北京100084 |
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| 基金项目： | 全国高等学校优秀博士学位论文作者专项基金;日本IHI研究项目;国家科技攻关项目 |
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| 摘 要： | 为减少弹性补偿法(ECM)在计算复杂结构的极限载荷时存在的较大误差,通过引入调整因子f提出了一种修正的弹性补偿法(MECM)。该方法在保留弹性补偿法简单、高效等优点的基础上,提高了复杂结构极限载荷的计算精度。通过三个典型算例比较了弹塑性增量法(EPAM)、两倍弹性斜率法(TESM)、弹性补偿法以及修正弹性补偿法的计算结果,表明修正弹性补偿法对于复杂结构能获得较高的计算精度。
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| 关 键 词： | 修正弹性补偿法 弹性模量 弹性分析 极限载荷 调整因子 |
| 文章编号： | 1000-4750（2006）03-0021-06 |
| 收稿时间： | 2004-01-15 |
| 修稿时间： | 2004-01-152004-03-26 |
A MODIFIED ELASTIC COMPENSATION METHOD FOR THE COMPUTATION OF LIMIT LOADS |
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| YANG Pu, LIU Ying-hua, YUAN Hong-yan, CEN Zhang-zhi. A MODIFIED ELASTIC COMPENSATION METHOD FOR THE COMPUTATION OF LIMIT LOADS[J]. Engineering Mechanics, 2006, 23(3): 21-26. |
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| Authors: | YANG Pu LIU Ying-hua YUAN Hong-yan CEN Zhang-zhi |
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| Affiliation: | Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China |
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| Abstract: | To reduce the relatively large computational errors of the elastic compensation method (ECM) for complicated structures, a modified elastic compensation method (MECM) is developed by introducing an adjustable factor f. This method improves the precision of the ECM and preserves the advantages of simplicity and high efficiency. Three representative examples are calculated here. The results are compared with those of the elastic-plastic analysis method (EPAM) and the twice elastic slope method (TESM). It is found that the MECM can provide good estimations of plastic limit loads for complex structures. |
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| Keywords: | modified elastic compensation method , elastic modulus elastic analysis limit load adjustable factor |
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