西北工业大学学报
西北工業大學學報
서북공업대학학보
JOURNAL OF NORTHWESTERN POLYTECHNICAL UNIVERSITY
2015年
2期
237-243
,共7页
孙鹏程%史耀耀%辛红敏%赵盼%李志山
孫鵬程%史耀耀%辛紅敏%趙盼%李誌山
손붕정%사요요%신홍민%조반%리지산
ABAQUS%立柱结构%计算机软件%变形%有限元方法%网格划分%数学模型%模态分析%固有频率%优化%刚度%元结构%盘铣立柱
ABAQUS%立柱結構%計算機軟件%變形%有限元方法%網格劃分%數學模型%模態分析%固有頻率%優化%剛度%元結構%盤鐉立柱
ABAQUS%립주결구%계산궤연건%변형%유한원방법%망격화분%수학모형%모태분석%고유빈솔%우화%강도%원결구%반선립주
ABAQUS,columns ( structural),computer software,deformation,finite element method,mesh gen-eration,mathematical models,modal analysis,natural frequencies,stiffness%cell structure,disc milling column
针对整体叶盘高效强力复合铣床的关键零部件刚性,运用有限元分析方法,分析其盘铣立柱的动、静态特性。提取立柱的3种典型元结构,结合盘铣切削条件,运用变量分析技术,并以元结构的出砂孔形状、尺寸、孔数和筋板作为优化对象,以固有频率和刚度为优化目标,以整体质量为约束条件,提高立柱的刚度质量比。根据获得的3种最优元结构对立柱重构建模,优化后的立柱结构方案与原方案相比,质量减轻(11?2%),固有频率(一阶固有频率增加28?4%)和刚度(整体变形减小38?5%)明显提高。
針對整體葉盤高效彊力複閤鐉床的關鍵零部件剛性,運用有限元分析方法,分析其盤鐉立柱的動、靜態特性。提取立柱的3種典型元結構,結閤盤鐉切削條件,運用變量分析技術,併以元結構的齣砂孔形狀、呎吋、孔數和觔闆作為優化對象,以固有頻率和剛度為優化目標,以整體質量為約束條件,提高立柱的剛度質量比。根據穫得的3種最優元結構對立柱重構建模,優化後的立柱結構方案與原方案相比,質量減輕(11?2%),固有頻率(一階固有頻率增加28?4%)和剛度(整體變形減小38?5%)明顯提高。
침대정체협반고효강력복합선상적관건령부건강성,운용유한원분석방법,분석기반선립주적동、정태특성。제취립주적3충전형원결구,결합반선절삭조건,운용변량분석기술,병이원결구적출사공형상、척촌、공수화근판작위우화대상,이고유빈솔화강도위우화목표,이정체질량위약속조건,제고립주적강도질량비。근거획득적3충최우원결구대립주중구건모,우화후적립주결구방안여원방안상비,질량감경(11?2%),고유빈솔(일계고유빈솔증가28?4%)화강도(정체변형감소38?5%)명현제고。
We use the finite element method to analyze the dynamic and static characteristics of the disc milling column of an efficient and powerful compound milling machine tool. We extract its three typical cell structures, take into account the disc milling conditions and use the multivariate analysis technique to optimize the shape, size, rib plate and number of the clearance holes of a cell structure The optimization objective is to enhance the disc milling column’ s natural frequency and stiffness. We use integral mass as the constraint condition to increase its stiffness?to?mass ratio. We then use the three optimal cell structures thus obtained to reconstruct and model the disc milling column. The results on comparing the optimized disc milling column with the non?optimized one show preliminarily that the integral mass of the optimized disc milling column is lower by 11?2%;its first?order natural frequency in?crease by 28?4%;its stiffness is enhanced ( the overall deformation diminishes by 38?5%) .