摘要
对基于材料力学的螺旋弹簧计算公式进行了讨论,提出了工程上计算弹簧最大剪切应力的公式,并在商业有限元软件ANSYS中构造了压缩螺旋弹簧的有限元模型。在探究弹簧应力分布时,通常只关心最容易发生断裂破坏的部分,仅需要对应力集中的一段进行准确的分析。在确定螺旋弹簧的边界条件后,运用ANSYS的子模型技术,在这段运用更细致的网格,可得到精确的结果。将FEA计算结果和材料力学结果进行比较,从求解方式上讨论出现微小差异的原因。
Based on Material Mechanics,helical spring calculation formula is discussed in this paper to propose the maximum shear stress calculation formula used in project,and a finite element model of the helical spring is constructed in the commercial software ANSYS.In general when discussing the stress distribution of helical spring,it is usually only interested in some of the most vulnerable parts where fracture failures happen,so only a section the stress concentration section requires for accurate analysis.By the determination of boundary conditions,Through the use the sub-modeling technology of commercial finite element software ANSYS,using more detailed grid,accurater result obtained.Calculation result by FEA method is compared with that of Material Mechanics,so as to discuss the minor differences through the solving ways.
出处
《机械》
2010年第9期22-24,共3页
Machinery
关键词
螺旋弹簧
有限元
应力分布
子模型技术
helical spring
finite element
stress distribution
sub-modeling technology
