风载荷下的起重机主梁有限元分析  

Finite element analysis of crane girder in wind load

作　　者：张雨[1] 何毅斌[1,2] 杨兵宽[1] 刘诗文[1] 陈定方[2] 

机构地区：[1]武汉工程大学机电工程学院,湖北武汉430073 [2]武汉理工大学智能制造与控制研究所,湖北武汉430063

出　　处：《机电工程》2013年第9期1090-1092,共3页Journal of Mechanical & Electrical Engineering

基　　金：国家自然科学基金资助项目(51175395)

摘　　要：针对目前户外起重机受外界风载荷条件的影响,首先,对风载荷进行了分类,并对主梁进行了合理的简化,研究了平均风载荷作用下主梁刚度和强度的影响。在分析起重机主梁静态受力的基础上,计算出了模型在八级大风下风载荷的大小,运用有限元软件对桥式起重机的主梁进行了有风载荷状态和无风载荷状态下的静态应力分析计算。通过对比分析,研究结果表明,风载荷对起重机的垂直静挠度和最大应力影响较小,而对起重机主梁水平方向的位移有一定的影响,这对起重机的防风制动装置有一定的参考价值,在起重机研究中为建立更接近实际的模型提供了参考依据,也为主梁的进一步优化以及轻量化设计提供了参考模型。Aiming at the external influence of outdoor cranes to the wind loading, first of all, the wind loading was classified and the main beam was simplified to a reasonable model. Main beam stiffness and strength were studied at an average wind loads. Based on the static force, the size of the model wind load was calculated under the eight level winds, and the crane girder was calculated by the finite element software in the wind loads and no wind loads. Compared with them, the results indicate that there will be tiny influence on the vertical static deflection and maximum stress of the crane. However, it has impact on the horizontal displacement. In the study of crane, it provides the ref- erence value about closer to the actual establishment, and the reference model to the further optimization and lightweight design of the beam.

关 键 词：起重机主梁 风载荷 有限元 

分 类 号：TH21[机械工程—机械制造及自动化] TH122