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《基于多目標(biāo)優(yōu)化的龍門加工中心動橫梁筋板結(jié)構(gòu)優(yōu)化設(shè)計方法.pdf》由會員上傳分享，免費在線閱讀，更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫。
1、第10期組合機床與自動化加工技術(shù)NO．102015年1O月ModularMachineTool&AutomaticManufacturingTechniqueoct．2015文章編號：1001—2265(2015)10—0041—04DOI：10．13462／j．cnki．mmtamt．2015．10．012基于多目標(biāo)優(yōu)化的龍I'-J工中心動橫梁筋板結(jié)構(gòu)優(yōu)化設(shè)計方法術(shù)朱金波，徐如濤，高新紅，李勇(成都航空職業(yè)技術(shù)學(xué)院工程實訓(xùn)中心，成都610100)摘要：針對模態(tài)分析、拓撲優(yōu)化在龍門加工中心動橫梁筋板形位尺寸優(yōu)化中的局限性，提出了基于多目標(biāo)優(yōu)化的龍門加工中心動橫梁
2、筋板結(jié)構(gòu)優(yōu)化設(shè)計方法。該方法以模態(tài)分析和拓撲優(yōu)化改進后的龍門加工中心動橫梁為研究對象，把動橫梁的質(zhì)量、第1階固有頻率和自重狀態(tài)下最大變形量為優(yōu)化設(shè)計目標(biāo)函數(shù)，動橫梁筋板結(jié)構(gòu)的位置尺寸和筋板的厚度尺寸作為優(yōu)化變量，建立了龍門加工中心動橫梁筋板結(jié)構(gòu)的多目標(biāo)優(yōu)化模型，分析了優(yōu)化變量對動橫梁質(zhì)量、第1階固有頻率和自重狀態(tài)下最大變形量的影響，求出了動橫梁部件筋板結(jié)構(gòu)Pareto最優(yōu)解。經(jīng)過多目標(biāo)優(yōu)化改進后的動橫梁部件1階固有頻率提高了7．36％、質(zhì)量減輕了4．97％、自重狀態(tài)下最大變形量略有減小，表明該優(yōu)化設(shè)計方法合理可行。關(guān)鍵詞：多目標(biāo)優(yōu)化；龍門加工中心；筋板結(jié)構(gòu)中圖分
3、類號：TH166；TG506文獻標(biāo)識碼：AAOptimizationDesignMethodforMovingBeamStifenedPlatesofGantryMachiningCenterBasedonMulti-objectiveOptimizationZHUJin—bo，XURu-tao，GAOXin—hong，LIYong(ChengduAeronauticPolytechnicEngineeringTechnologyCenter，Chengdu610100，China)Abstract：Inviewofthelimitationsforthemod
4、alanalysisandtopologyoptimizationintheshapeandposi-tionsizeofthegantrymachiningcentermovingbeamstiffenedplatesoptimizationdesign，theoptimizationdesignmethodformovingbeamstiffenedplatesofgantrymachiningcenterbasedonmulti··objectiveoptimi··zationispresented．Themethodusesimprovedmovingb
5、eamofgantrymachiningcenterbymodalanalysisandtopologyoptimizationastheresearchobject，takestheweight，thefirstnaturalfrequencyandmaximumdeformationundergravityastheoptimalobjectivefunction，takesthepositionandthicknessdimensionsofthemovingbeamstiffenedplatesasoptimalvariables，established
6、themulti—objectiveoptimizationmodelofthemovingbeamstiffenedplates，analyzedtheinfluenceoftheoptimizationvariablestotheweight，thefirstnatural~equencyandmaximumdeformationundergravity，andgottheoptimalParetosolutionsofthemov—ingbeamstiffenedplates．Themovingbeamimprovedbymulti—objectiveop
7、timizationthatthefirstnaturalfrequencywasincreased7．36％，theweightwasreduced4．97％，andmaximumdeformationundergravityisslightlydecreases，showsthattheoptimizationdesignmethodisreasonableandfeasible．Keywords：multi—objectiveoptimization；gantrymachiningcenter；stiffenedplates在機械產(chǎn)品設(shè)計中引人數(shù)字化建模和
8、有限元分析技0引言術(shù)，對
