某型堆料机臂架结构强度与模态计算
Structural Strength and Modal Calculation of a Certain Type of Stacker Arm
李明昊1
作者信息
- 1. 曹妃甸港矿石码头股份有限公司,唐山 063200
- 折叠
摘要
堆料机结构尺寸庞大、承载大且载荷复杂,为此对某新投入使用的堆料机臂架展开强度和变形计算,并进一步计算结构模态频率.首先,针对复杂结构进行多种方法尝试,最终采用杆和板单元构建结构有限元模型,建模思路采用先整体分析、后对局部高应力区采用实体单元建模并进一步分析的方法.结果表明,该方法能够获得较准确的计算结果,而且计算量不大.然后,统计分析该型堆料机臂架结构的载荷,分为水平重载工况、上扬空载、下俯重载 3 类工况并分别进行计算,其中上扬空载工况下结构的应力最小,其余 2 种工况下结构应力分布较为接近,且最大应力在相同位置.
Abstract
The structure of the stacker is large in size,large in load and complex in load,so the development strength and deformation of the boom of a new stacker are calculated,and the modal frequency of the structure is further calculated.Firstly,a variety of methods are tried for the complex structure.Finally,the finite element model of the structure is constructed using rod and plate elements.The modeling idea is to analyze the whole structure first,and then use solid element modeling and further analysis for the local high stress area.The results show that this method can obtain more accurate calculation results,and the calculation amount is small.Then,the load of the boom structure of this type of stacker is statistically analyzed,which is divided into three types of conditions,namely horizontal heavy load condition,upward no-load condition and downward heavy load condition,and the calculation is carried out respectively.In the upward no-load condition,the structural stress is the least,while in the other two conditions,the structural stress distribution is relatively close,and the maximum stress is in the same position.
关键词
堆料机/臂架结构/强度计算/模态计算Key words
stacker/arm structure/strength calculation/modal calculation引用本文复制引用
出版年
2024
NETL
NSTL
万方数据