本文選題：汽車覆蓋件 + 沖壓成形　； 參考：《鍛壓技術(shù)》2017年02期

【摘要】：提出應(yīng)用CAE仿真計算獲得汽車覆蓋件在自身重力作用下帶來的變形量,采用在沖壓件上懸掛砝碼的方法來近似驗證重力仿真計算的精度,并在二維弧形件和三維門內(nèi)板零件上驗證了仿真分析的準(zhǔn)確性。然后通過強制變形仿真方法將掃描數(shù)據(jù)與模具型面模型優(yōu)化對齊,應(yīng)用網(wǎng)格映射方法建立節(jié)點映射關(guān)系并通過三角形形函數(shù)插值計算出投影點的坐標(biāo)值,之后通過偏置的方法對掃描數(shù)據(jù)進行相應(yīng)的修正,獲得準(zhǔn)確的回彈變形網(wǎng)格模型,提高逆向補償?shù)木取?br/>[Abstract]:In this paper, CAE simulation is used to calculate the deformation of automobile panels under the action of their own gravity, and the method of hanging weights on stamping parts is used to approximate verify the accuracy of gravity simulation calculation. The accuracy of simulation analysis is verified on two-dimensional arc parts and three-dimensional inner panel parts. Then the scanning data is optimized and aligned with the die surface model by the forced deformation simulation method, and the node mapping relationship is established by using the grid mapping method, and the coordinate value of the projection point is calculated by interpolation of the triangular shape function. After that, the scanning data is corrected by offset method, and an accurate springback deformation mesh model is obtained to improve the accuracy of reverse compensation.
【作者單位】： 湖南大學(xué)汽車車身先進設(shè)計制造國家重點實驗室;廣州汽車集團乘用車有限公司;
【基金】：國家自然科學(xué)基金資助項目(51475155) 國家科技重大專項(2014ZX04015051)
【分類號】：U466;TG386.32

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