摘要
运用振动力学知识建立桥式起重机桥架结构起吊货物这一动态过程的动力学模型,比较准确的计算出了钢丝绳从张紧开始受力阶段到货物离地瞬间所需要的时间,并绘制出桥架结构起吊货物时的载荷曲线。最后应用有限元分析软件ANSYS Workbench进行瞬态动力学分析,得到结构的位移响应曲线,并计算出了桥架结构的起升动载系数,为现有起重机的设计方法提供了一种参考。
The time of wire rope from tension stress stage to the goods just leaving off the ground can be accurately calculated by building the dynamic model of bridge structure lifting goods with vibration mechanics knowledge,the load curve of bridge structure lifting goods can also be drawn out. Finally,the structure displacement response curve can be got by using the finite element analysis software ANSYS Workbench for transient dynamics analysis. At the same time,the lifting dynamic load coefficient of bridge structure can be calculated,which provides a refer-ence for crane design.
出处
《太原科技大学学报》
2015年第2期143-146,共4页
Journal of Taiyuan University of Science and Technology
关键词
桥架结构
动力学模型
载荷曲线
位移响应曲线
bridge structure
dynamic model
load curve
displacement response curve
