基于灵敏度分析的井架结构模型修正方法研究
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摘要
从井架结构模态参数对物理参数变化的灵敏度出发,探讨了井架结构的模型修正问题。以设计参数型模型修正方法为基础,对井架结构杆件的材料、截面形状和几何尺寸等参数进行直接修正。确定优化模型的目标函数及约束变量,利用一阶优化算法对结构参数进行了优化和状态评估。通过实验室简易井架模型的分析验证了此方法的可行性。该方法为复杂井架结构的损伤识别和状态评估提供了一个新思路。修正算法的优化方法采用ANSYS一阶优化方法,敏感性分析和模型修正完全基于ANSYS软件进行,适合于实际工程的应用。
The model updating method of the derrick structure based on the modal sensitivity analysis is discussed.In this method,the design parameters of the derrick structure such as materials,cross-section shapes and geometric size are directly updated,the objective function and state variables of optimal model are determined,and the first-order optimization algorithm is used to optimize parameters and assess state.The method has been verified by experimental analysis of simple derrick model.This method provides a new idea for complex structural damage identification and safety monitoring.It is suitable for practical engineering applications,because the first-order method of ANSYS optimization is used to update the FE model and the sensitivity analysis and model updating are completely based on ANSYS software.
The model updating method of the derrick structure based on the modal sensitivity analysis is discussed.In this method,the design parameters of the derrick structure such as materials,cross-section shapes and geometric size are directly updated,the objective function and state variables of optimal model are determined,and the first-order optimization algorithm is used to optimize parameters and assess state.The method has been verified by experimental analysis of simple derrick model.This method provides a new idea for complex structural damage identification and safety monitoring.It is suitable for practical engineering applications,because the first-order method of ANSYS optimization is used to update the FE model and the sensitivity analysis and model updating are completely based on ANSYS software.
引文
1程进,江见鲸,肖汝诚,等.大跨度钢拱桥结构极限承载力分析.工程力学,2003;20(2):7—10
2韩东颖,李子丰,周国强.在役石油钻机井架极限承载仿真模型研究.石油学报,2007;28(2):120—123,128
3李惠彬,郑兆昌,等.对国内外桥梁损伤诊断的几种方法的评述.工程力学,1998;407—414
4Aktan E,Beck J,Cornwell P,et al.The State of the Art in Structureal Identification of Constructed Facilities.A Report by the ASCE Com-mittee on Structural Identification of Constructed Facilities.1999
5李华军,杨和振.海洋平台结构参数识别和损伤诊断技术的研究进展——第十三届全国结构工程学术会议特邀报告.工程力学,2004;21(1):114—138
6张德文,魏阜旋.模型修正与破损诊断.北京:科学出版社,1999
7淳庆,邱洪兴.钢桁梁桥基于模型修正方法的损伤程度识别研究.地震工程与工程振动,2005;25(2):114—118
8郭彤,李爱群,韩大章.基于灵敏度分析与优化设计原理的大跨桥梁动力模型修正.桥梁建设,2004;(6):20—23
9范立础,袁万城,张启伟.悬索桥结构基于敏感性分析的动力有限元模型修正.土木工程学报,2000;33(1):9—14
10黄世霖,田吉方.机械结构动特性的灵敏度分析与修改.清华大学学报(自然科学版),1986;26(4):29—43
11刘继承,周传荣.一个基于优化的有限元模型修正方法.振动与冲击,2003;22(2):33—35
2韩东颖,李子丰,周国强.在役石油钻机井架极限承载仿真模型研究.石油学报,2007;28(2):120—123,128
3李惠彬,郑兆昌,等.对国内外桥梁损伤诊断的几种方法的评述.工程力学,1998;407—414
4Aktan E,Beck J,Cornwell P,et al.The State of the Art in Structureal Identification of Constructed Facilities.A Report by the ASCE Com-mittee on Structural Identification of Constructed Facilities.1999
5李华军,杨和振.海洋平台结构参数识别和损伤诊断技术的研究进展——第十三届全国结构工程学术会议特邀报告.工程力学,2004;21(1):114—138
6张德文,魏阜旋.模型修正与破损诊断.北京:科学出版社,1999
7淳庆,邱洪兴.钢桁梁桥基于模型修正方法的损伤程度识别研究.地震工程与工程振动,2005;25(2):114—118
8郭彤,李爱群,韩大章.基于灵敏度分析与优化设计原理的大跨桥梁动力模型修正.桥梁建设,2004;(6):20—23
9范立础,袁万城,张启伟.悬索桥结构基于敏感性分析的动力有限元模型修正.土木工程学报,2000;33(1):9—14
10黄世霖,田吉方.机械结构动特性的灵敏度分析与修改.清华大学学报(自然科学版),1986;26(4):29—43
11刘继承,周传荣.一个基于优化的有限元模型修正方法.振动与冲击,2003;22(2):33—35
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