摘要
采用双模量线性约束模型考虑芯板对面板的受压和粘结约束作用,运用能量法分析了面内压力作用下钢—混凝土组合墙板中面板的单面接触屈曲问题。为了解决MATLAB优化函数非全局优化问题,编写了二次搜索极小值函数,实现了对目标函数的全局优化,利用MATLAB的符号运算和优化工具箱求得了不同约束情况下的屈曲系数。通过与已有成果进行对比,验证了所用方法的有效性。
The bimodulus constraint model is applied to simulate the constraint of inner materials under pressure.To analyze the unilateral contact compressive buckling of steel skin sheet in steel-concrete composite wall,the energy method is adopted.The function for searching secondary minimum is programed to solve the non-global optimization problem.So the global optimization of the objective function is achieved.The buckling factor values under different circumstances are obtained by using the symbolic computation and optimization toolbox in MATLAB.The validity of the methods used is verified by the comparation with existing achievements.
出处
《四川建筑科学研究》
北大核心
2011年第2期22-25,共4页
Sichuan Building Science
基金
国家自然科学基金资助项目(50878105)
江苏省建筑业科研项目(JGJH2009-17)
关键词
单边接触
屈曲
MATLAB
符号运算
优化分析
unilateral contact
buckling
MATLAB
symbolic computation
optimizational analysis
