横向荷载作用下插入式大直径圆柱壳结构的优化数学模型  

Mathematical Optimization Model for Embedded Large-Diameter Cylindrical Shell Structure under Lateral Loads

作　　者：王乐芹[1] 余健星[1] 周锡礽[1] 王晖[1] 徐炳伟[1] 

机构地区：[1]天津大学,天津300072

出　　处：《应用力学学报》2009年第1期17-21,共5页Chinese Journal of Applied Mechanics

摘　　要：基于非线性弹簧元数值分析模型,建立了横向荷载作用下原状软粘土中插入式大圆柱壳结构的最优化设计数学模型,从中可以求得多工况荷载组合作用下,结构最佳受力的圆柱壳最佳尺度匹配。采用Monte Carlo方向探索随机行走法作为最优化方法,对通用有限元软件ANSYS进行了优化技术的再开发,基于FORTRAN与ANSYS软件平台联合构建适合薄壁圆柱壳结构自身特殊问题分析的优化过程。算例表明此优化技术是可行有效的,结构经优化设计后相对于原设计,受力条件更优,材料用量有所节省。The optimization model of embedded large-diameter cylindrical shell structure under lateral loads is brought forward based on the numerical analysis of nonlinear spring element model.The optimized geometrical dimensions and optimal aspect ration of the structure are obtained.The optimization process with random walk method is constituted in FORTAN combined with secondary development of ANSYS.The feasibility and validity of the optimization model are verified by practical engineering examples,thus the bearing status is improved and the material consumption is reduced to make the lifting positioning and submerging process easier.

关 键 词：插入式大直径圆柱壳结构 非线性弹簧元数值分析 结构优化设计 方向探索随机行走法 

分 类 号：TU2[建筑科学—建筑设计及理论]