| 黄吉锋.结构近似分析中的二次位移假定[J].计算力学学报,1999,16(1):79~86 |
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| 结构近似分析中的二次位移假定 |
| Second displacement assumption method in structural approximation analysis |
| 修订日期：1997-09-23 |
| DOI：10.7511/jslx19991013 |
| 中文关键词: 假定 近似法 二次位移假定 结构分析 建筑结构 |
| 英文关键词:assumption,approximate method,first displacement assumption,second displacement assumption |
| 基金项目: |
| 黄吉锋 |
| 中国建筑科学研究院计算中心 |
| 摘要点击次数: 1127 |
| 全文下载次数: 8 |
| 中文摘要: |
| 本文提出结构近似分析中的“二次位移假定”方法，并详细讨论了二次位移假定在有限元位移法中的实施。 |
| 英文摘要: |
| As an extension of the traditional assumption method,the concept of the Second Displacement Assumption (also called SDA for short) has been advanced in this paper. At the same time, a detailed scheme about the implementation of the SDA method in a program of Finite Elements is presented. The major function of the SDA method is to reduce the order of the structural problem so that both the accuracy and the efficiency can be taken into account in large structural analysis problems. Furthermore, the SDA method can also be used to realize the compatibility of the structure where a sudden or abrupt change exists. If needed, the SDA method can be degenerated to the Rigid Diaphram Assumption and to the Rigid Body Assumption which have been widely used in the analysis of tall buildings. |
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