摘要
为解决驱动滚筒进行有限元分析时加载不便的问题,以滚筒外表面上一点为原点建立笛卡尔坐标系,推导圆心角与横坐标之间的关系,应用级数理论,将由欧拉公式决定的以角度为自变量的指数函数分布载荷表示成级数形式,满足了有限元分析软件中非均布载荷加载公式的需要.计算表明,在所研究的区域内,级数形式的分布载荷与指数函数分布载荷的变化规律基本一致,最大误差约为10%,通过乘以大于1的系数,可使结果偏于安全,能够满足工程计算要求.这种加载方法使得驱动滚筒的有限元分析更加方便.
To solve the inconvenience problem of loading on a driving drum when doing finite element analysis,a Cartesian coordinate system is established to take a point on the outer surface of the drum as the origin point,and the relationship between the central angle and the abscissa is derived.Then the distributed load of the exponential function of the angle from Euler＇ s formula is expressed as the distributed load of a series form,consistent with progression theory.Thusly,it can meet the needs of a non-uniform load formula for finite element analysis software.Calculations show that in the area studied,the curves of the series and exponential distribution load are very approximate and the maximum error is about 10％,the engineering computing requirements can be met,and the results tend to be safe by multiplying coefficient greater than 1.This loading method makes the finite element analysis of a driving drum more convenient.
出处
《河南理工大学学报（自然科学版）》
CAS
北大核心
2014年第6期756-760,共5页
Journal of Henan Polytechnic University（Natural Science）
基金
河南省科技攻关计划项目(0524260021)
焦作市重点科技攻关计划项目
关键词
驱动滚筒
有限元分析
非均布载荷
级数形式
driving drum
finite element analysis
non-uniform load
series form
