CAJ | 학술논문

基于数据统计分析提出一种用于表面粗糙度仿真的有限元分析模型最佳尺寸的确定方法，采用最优模型分析多种应变路径下铝合金 Al6061材料的晶粒尺寸和织构类型对表面粗糙度演变的影响。结果表明：不同的应变路径下，塑性变形后的表面粗糙度随着晶粒尺寸的增加而增大；具有较小泰勒因子的织构，在变形过程中自身变形协调性较好，可以获得较好的表面质量；而在相同的变形条件下，具有相同泰勒因子、不同剪切趋势的材料在塑性变形后会呈现出不同的表面形貌，织构之间的剪切趋势差异越大，变形后的表面就越粗糙。
기우수거통계분석제출일충용우표면조조도방진적유한원분석모형최가척촌적학정방법，채용최우모형분석다충응변로경하려합금 Al6061재료적정립척촌화직구류형대표면조조도연변적영향。결과표명：불동적응변로경하，소성변형후적표면조조도수착정립척촌적증가이증대；구유교소태륵인자적직구，재변형과정중자신변형협조성교호，가이획득교호적표면질량；이재상동적변형조건하，구유상동태륵인자、불동전절추세적재료재소성변형후회정현출불동적표면형모，직구지간적전절추세차이월대，변형후적표면취월조조。
The optimum crystal model size established method for surface roughness simulation was presented based on data statistic analysis. The influences of grain size and textures of Al6061 alloy on surface roughness evolution were discussed under different strain routes. The results indicate that the surface roughness after plastic deformation increases with the increase of the grain size under different strain routes. The textures with small Taylor factor have better deformation coordination, which will be beneficial to reduce the surface roughness. Under the same deformation condition, the models with the same Taylor factor and different the shear tendencies present different surface morphologies. And the larger shear tendency difference is, the worse the surface obtained after plastic deformation will be.