摘要
针对桥式起重机在多种工况下的不同载荷组合的强度、刚度、稳定性的检测和实验难以实现的问题,以桥式起重机为研究对象,通过SoildWorks建立三维模型,导入Midas NFX有限元仿真分析软件,设计在多种工况下切实可行的桥架结构模型实验方案,开展线性静力分析、疲劳分析和屈曲分析,对起重机主梁的强度、刚度和稳定性进行有限元分析研究。结果表明,该桥式起重机静强度、静刚度、疲劳强度和稳定性均满足设计规范要求,且整体结构还有较大的优化空间。采用智能优化算法-镜面反射算法对起重机金属结构设计参数作优化分析,提出了改进方案,极大地减轻结构的质量,为后续同类型结构设计提供了科学的参考。
In view of the different load combinations of bridge cranes under various working conditions,it is difficult to detect and test the strength,stiffness and stability of bridge cranes.Taking a company’s bridge crane as the research object,a three-dimensional model was established through SoildWorks.The finite element simulation analysis software Midas NFX was used to design feasible bridge structure model experimental programs under various working conditions,so as to linear static analysis,fatigue analysis and buckling analysis were carried out.The strength,stiffness,and stability of the crane’s main girder were analyzed and studied.The results show that the static strength,static stiffness,fatigue strength and stability of the bridge crane meet the requirements of the design specification,and the overall structure still has a large room for optimization.Intelligent optimization algorithm-the specular reflection algorithm was used to optimize the design parameters of the crane metal structure,and an improvement plan was proposed,which significantly reduced the quality of the structure and provided a scientific reference for the subsequent design of the same type of structure.
作者
于燕南
戚其松
董青
徐格宁
YU Yan-nan;QI Qi-song;DONG Qing;XU Ge-ning(Mechanical Engineering College, Taiyuan University of Science and Technology, Taiyuan 030024, China)
出处
《科学技术与工程》
北大核心
2021年第31期13334-13341,共8页
Science Technology and Engineering
基金
国家自然科学基金(51805348)
山西省应用基础研究计划(201901D211287)。
关键词
桥式起重机
多工况
Midas
NFX
有限元
优化
bridge crane
various working conditions
Midas NFX
finite element
optimization
