摘要
分析了圆锯片辊压适张后的应力分布,并与国产圆锯片辊压适张后X射线衍射法的实验结果进行 了对比．考虑到特定辊压工艺和不同锯片材质对适张效果的影响,以弹性力学中接触理论为基础,应用ANSYS 软件的塑性分析法,建立了适张后应力状态的弹塑性分析模型．该模型引入影响辊压适张度的主要因素:锯片 基材塑性应力应变关系,辊轮结构、转速,以及辊压载荷、位置和次数,结果表明应力分布的有限元计算结果 与实验结果比较一致．
Roll tensioning is a prestressing procedure commonly used to increase the stability of circular saws. This paper describes how the finite element method can be used to analyze the residual stresses induced by roll tensioning. As the results measured by X-ray disagree with the calculations on the basis of three-region theoretical model, this paper iatroduces a new model, in which the main parameters affecting roll tensioning include plastic constitutive relationship of the material, structure and rotational speed of roller, applied pressure, tensioning radius, times of tensioning. The results of residual stresses agree with experimental measurements.
出处
《力学与实践》
CSCD
北大核心
2005年第6期61-63,72,共4页
Mechanics in Engineering
基金
北京林业大学"质量工程"教学改革项目资助
关键词
圆锯片
辊压适张
有限元法
应力分布
circular saw blade, roll tensioning, finite element method
