本文選題：落砂機 + 碰撞��； 參考：《合肥工業(yè)大學(xué)》2012年碩士論文

【摘要】：本文以慣性振動落砂機為研究對象，以有限元軟件LS—DYNA、HyperMesh和ADAMS為平臺，建立落砂機框體與砂箱的有限元模型，對慣性振動落砂機進行碰撞仿真分析，并針對框體進行了拓?fù)鋬?yōu)化設(shè)計，提出改進意見。主要研究有： （1）在HyperMesh中建立慣性振動落砂機框體與砂箱的有限元模型，利用命令流的方法導(dǎo)入非線性動力學(xué)分析程序LS—DYNA中，設(shè)置落砂機框體與砂箱的接觸碰撞，分析落砂機框體與砂箱碰撞后的應(yīng)力，并利用Mises屈服準(zhǔn)則進行校核，同時找出落砂機框體在工作中的薄弱部件； （2）在ADAMS中建立慣性振動落砂機的仿真分析模型，利用彈簧連接框體與地面模擬落砂機的運動，應(yīng)用多剛體動力學(xué)理論，對落砂機框體與砂箱的碰撞進行運動學(xué)仿真，得到落砂機框體所受到?jīng)_擊力的情況，這對以后分析落砂機框體結(jié)構(gòu)強度與疲勞有重要的指導(dǎo)意義； （3）在Hypermesh中對落砂機框體進行拓?fù)鋬?yōu)化設(shè)計，采用兩種優(yōu)化方案對框體進行優(yōu)化，通過對兩種優(yōu)化結(jié)果的分析，驗證優(yōu)化方案的合理性，提出增加框體薄弱結(jié)構(gòu)的厚度或者增加筋板的結(jié)構(gòu)改進意見，，以此增加框體的結(jié)構(gòu)強度。
[Abstract]:In this paper, the finite element model of the frame and the sand box is established by using the finite element software LS-DYNAA HyperMesh and ADAMS as the research object, and the impact simulation analysis of the inertial vibration sand blanking machine is carried out. The topology optimization design of the frame is carried out, and the improvement suggestions are put forward. The main studies are: 1) the finite element model of the frame and sandbox of inertial vibration sand blanking machine is established in HyperMesh. The method of command flow is used to import the nonlinear dynamic analysis program LS-DYNA, and the contact collision between the frame body and sand box is set up. This paper analyzes the stress of the sand blanking machine frame and the sand box after collision, and uses the Mises yield criterion to check and find the weak parts of the sand falling machine frame in the working process. (2) the simulation analysis model of inertial vibration sand blanking machine is established in ADAMS. The motion of sand blanking machine is simulated by spring connecting frame and ground, and the kinematic simulation of the impact between the frame body and sand box is carried out by applying the theory of multi-rigid body dynamics. The results of the impact force on the sand-blanking frame body are of great significance to the analysis of the structural strength and fatigue of the sand-blanking machine frame body in the future. 3) in Hypermesh, the sand-blanking machine frame is designed by topology optimization, and two optimization schemes are adopted to optimize the frame body. Through the analysis of the two optimization results, the rationality of the optimization scheme is verified. In order to increase the structural strength of the frame, it is proposed to increase the thickness of the weak structure of the frame or the structural improvement of the stiffened plate.
【學(xué)位授予單位】：合肥工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TH69

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