摘要
针对目前桥式起重机设计大多以静强度作为主要设计准则,设计模型修改困难等问题,以浙江金港船业的10t-34.5m桥式起重机整体结构为设计原型,采用有限元法动态分析理论,建立系列通用的桥式起重机有限元参数化模型,并对其进行动态分析,分析结果作为优化设计模型的目标函数。采用改进的非支配排序遗传算法(NSGA-II),对结构进行多目标动态优化设计,有效减轻了桥式起重机的质量,提高了桥式起重机金属结构的动态性能,为桥式起重机的设计提供了一定的理论依据。
According to the current problems that most of the bridge crane design project takes the strength as the main design criteria and design model is difficult to modify, it takes the overall structure of Zhejiang Jingang shipping industry 10t-34.5m bridge crane as the prototype, uses the finite element method to set up a series of common finite element parametric models of the bridge crane. It takes the dynamic analysis as the objective function of optimization design model, applies the improved non-dominated sorting genetic algorithm to solve the multi-objective dynamic optimization structures design. This reduces the weight of the bridge crane effectively and improves the dynamic performance of the metal structure, and provides some theoretical basis for the design of the bridge crane.
基金
浙江省重大科技专项项目(2009C11G2020007)
关键词
有限元法
参数化
NSGA-II
多目标动态优化
Finite Element Method
Parameters
NSGA-Ⅱ
Multi-objective Dynamic Optimization
