轻型免维护双腹板滑轮的极限承载能力研究  

Study of the Ultimate Loading Capacity of the Pulley with Two Webs

作　　者：张氢[1] 童丽君[1] 聂飞龙[1] 孙远韬[1] 秦仙蓉[1] 

机构地区：[1]同济大学机械与能源工程学院

出　　处：《港口装卸》2016年第5期1-5,共5页Port Operation

基　　金：国家自然科学基金项目资助(51205292);国家科技支撑计划课题资助(2014BAF08B05;2015BAF06B05)

摘　　要：对新研制的某直径1 800 mm轻量化高速重载薄壁双腹板滑轮的抗压失稳能力进行了分析。先对滑轮采用壳单元建模型进行线性屈曲分析,得到了其特征值临界载荷和第一阶屈曲模态,并以其作为加载和变形依据对滑轮进行非线性屈曲分析,求得其临界失稳载荷值为423 t,滑轮的加载载荷-侧向位移曲线与弹塑性屈曲理论一致。为验证滑轮的有限元仿真的正确性,设计了1台滑轮动载模拟试验台,在2种工况下对滑轮进行试验,发现试验结果与计算结果非常接近。Through the analysis of instabilityin compression for the new kind of pulley（whose diameter is 1800 mm） that presents advantages of light weight, high speed, heavy load and double thin-walled webs, the authors obtained both the linear critical load and the first buckling mode by conducting an eigen-buckling analysis of the pulley. After the nonlinear buckling analysis has been conducted according to the first buckling mode, the critical buckling load of the pulley is calcu- lated to be 423 ton, which is 5 times of the normal load that the pulley bears. The curve of the vertical load and the lateral displacement for the pulley is consistent with the plastic buckling theory. In order to test the correctness of the FEA analysis of the pulley, a dynamic testbed for the pulley has also been designed. Experiments have been conducted on the pulley in two cases, and it is found that both the experimental and simulation results coincide with each other well.

关 键 词：滑轮 动载试验 塑性屈曲 弧长法 

分 类 号：U653.929.1[交通运输工程—港口、海岸及近海工程]