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浙江大学学报(工学版)
浙江大学学报(工学版)
土木工程     
自适应张弦梁结构的非线性内力控制
CHENG Hua-qiang, LUO Yao-zhi, XU Xian
浙江大学 空间结构研究中心,浙江 杭州 310058
Nonlinear force control of adaptive beam sting structure
CHENG Hua-qiang, LUO Yao-zhi, XU Xian
Space Structures Research Center, Zhejiang University,Hangzhou 310058, China
 全文: PDF(737 KB)  
摘要：

根据预应力在自适应张弦梁结构中的作用和撑杆的可调控性,提出基于局部分析法的内力控制分析方法.建立外荷载作用下,以结构最合理内力状态为控制目标的线性内力控制算法的优化模型.利用模拟退火算法来获得可调撑杆的调节量；考虑内力控制的几何非线性,引入非线性迭代过程,对线性控制算法的结果进行修正,建立结构的非线性内力控制算法.通过多撑杆自适应张弦梁结构数值算例在不同外荷载作用下工作性能的分析,验证了非线性内力控制算法的适用性.
关键词： 自适应张弦梁;  智能结构;  模拟退火;  局部分析法;  内力控制    
Abstract:

A force control algorithm based on local analysis method was proposed according to the action of prestress in adaptive beam string structure and the controllability of adjustable bar.  The optimization model of linear force control algorithm for optimizing structural force status was established when the structure worked under external loads. Adjustment of the adjustable bar was acquired from solving the optimization model by simulated annealing algorithm. Considering the geometric nonlinearity, a nonlinear iteration was introduced to calibrate the result of the linear force control analysis to form the nonlinear force control algorithm. The feasibility of the nonlinear force control algorithm was verified by the analysis of the working performance of a multi-bars adaptive beam sting structure numerical example under different external loads．
Key words: intelligent structure    adaptive beam string structure    simulated annealing    force control    local analysis method
出版日期: 2014-08-01
:  TU 391  
基金资助:

国家杰出青年科学基金资助项目(51025828); 国家自然科学基金资助项目(20978227，51008271).
通讯作者: 罗尧治，男，教授，博导.     E-mail: luoyz@zju.edu.cn
作者简介: 程华强(1986―)，男，博士生，从事自适应结构、健康监测的研究. E-mail: huaqiangcheng@163.com
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引用本文:

程华强,罗尧治,许贤. 自适应张弦梁结构的非线性内力控制[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008-973X.2014.07.003.

CHENG Hua-qiang, LUO Yao-zhi, XU Xian. Nonlinear force control of adaptive beam sting structure. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008-973X.2014.07.003.

链接本文:

http://www.zjujournals.com/xueshu/eng/CN/10.3785/j.issn.1008-973X.2014.07.003    或    http://www.zjujournals.com/xueshu/eng/CN/Y2014/V48/I7/1155

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