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| 邓肯模型参数敏感性分析 | |
| 引用本文： | 陈斌,吉林,张旭晖.邓肯模型参数敏感性分析[J].华北水利水电学院学报,2002,23(4):10-13. |
| 作者姓名： | 陈斌 吉林 张旭晖 |
| 作者单位： | 1. 南京大学地球科学系,江苏,南京,210093 2. 河海大学土木工程学院,江苏,南京,210098 3. 南京地下铁道有限责任公司,江苏,南京,210024 |
| 基金项目： | 国家自然科学基金项目 (5 980 90 0 3) |
| 摘 要： | 模型参数的偏导数及敏感性分析是结构正反分析中的一个重要内容 ,其中又以参数的偏导数计算为关键 .而非线性模型的参数偏导数计算和敏感性分析却一直未能很好解决 .以能较好模拟土体非线性力学行为的Duncan -ChangE -B模型为基础 ,通过分解应力球量与应力偏量 ,导出一个在有限元计算中 ,位移对参数偏导数的数值计算公式 .并通过算例对Duncan模型参数的敏感性进行了分析 |
| 关 键 词： | 邓肯模型 敏感性 有限元 偏导数 |
| 文章编号： | 1002-5634(2002)04-0010-04 |
| 修稿时间： | 2002年6月10日 |
Sensitivity Analysis of Duncan Model's Parameters |
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| CHEN Bin ,JI Lin ,ZHANG Xu hui.Sensitivity Analysis of Duncan Model''''s Parameters[J].Journal of North China Institute of Water Conservancy and Hydroelectric Power,2002,23(4):10-13. | |
| Authors: | CHEN Bin JI Lin ZHANG Xu hui |
| Affiliation: | CHEN Bin 1,JI Lin 2,ZHANG Xu hui 3 |
| Abstract: | The analysis of partial derivative and sensitivity of model's parameters has long been regarded as an important subject in the back analysis of structure construction, and the calculation of partial derivative has been taken as a crucial role. However, against linear model, the analysis of non-linear model's parameters has not been done well.The Duncan-Chang E-B model is used to simulate the non-linear mechanical behavior of soil. With the separation of hydrostatic stress and stress deviator, a partial derivative formulation about displacement and parameter is derived in finite element evaluation. Application in an example shows that different parameters have different influence on sensitivity. |
| Keywords: | Duncan model sensitivity finite element method partial derivative |
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