机床与液压
機床與液壓
궤상여액압
MACHINE TOOL & HYDRAULICS
2015年
1期
130-135
,共6页
VL855加工中心%静态结构%模态%多目标优化
VL855加工中心%靜態結構%模態%多目標優化
VL855가공중심%정태결구%모태%다목표우화
VL855 machining center%Static structural%Modal%Multi-objective optimization
在PROE和ANSYS Workbench的平台上建立VL855加工中心立柱结构的参数化模型，进行Static Structural和Modal分析；通过灵敏度分析选定立柱的壁厚、导轨面凸台厚度、筋板厚度、螺栓槽间距为优化的设计变量，立柱的质量、最大变形、第一阶段振型作为目标变量，进行多目标优化。结果表明：优化后，立柱质量减少5?2％，立柱在同样载荷情况下变形量与优化前变形量相近，其低阶模态有所提高，满足工作状态动态要求。
在PROE和ANSYS Workbench的平檯上建立VL855加工中心立柱結構的參數化模型，進行Static Structural和Modal分析；通過靈敏度分析選定立柱的壁厚、導軌麵凸檯厚度、觔闆厚度、螺栓槽間距為優化的設計變量，立柱的質量、最大變形、第一階段振型作為目標變量，進行多目標優化。結果錶明：優化後，立柱質量減少5?2％，立柱在同樣載荷情況下變形量與優化前變形量相近，其低階模態有所提高，滿足工作狀態動態要求。
재PROE화ANSYS Workbench적평태상건립VL855가공중심립주결구적삼수화모형，진행Static Structural화Modal분석；통과령민도분석선정립주적벽후、도궤면철태후도、근판후도、라전조간거위우화적설계변량，립주적질량、최대변형、제일계단진형작위목표변량，진행다목표우화。결과표명：우화후，립주질량감소5?2％，립주재동양재하정황하변형량여우화전변형량상근，기저계모태유소제고，만족공작상태동태요구。
PROE and ANSYS Workbench platform were selected for parametric modeling of the vertical column structure of VL855 type machining center. The Static Structural and Modal analysis were carried out. Through sensitivity analysis, the column wall thickness、 the boss thickness of guide surface、 inner rib thickness and bolt slot pitch were selected to optimize the design variables. Multi?objective optimization was applied by taking the weight, the maximum deformation and the first stage vibration mode of the col?umn as objective variables. The results show that the weight of column is decreased by 5?2% after optimization. The column deformation is close to the deformation before optimization in the same load case, and the lower stage modes are improved in a certain extend, which meet the dynamic requirements in working condition.
