本文選題：鋁合金鍛件 + 等勢線��； 參考：《華中科技大學(xué)學(xué)報(bào)(自然科學(xué)版)》2015年02期

【摘要】：以7050鋁合金鍛件為例,首先利用ANSYS軟件得到等勢線,即預(yù)制坯的形狀,與壓機(jī)速度、溫度、摩擦因素一起作為參數(shù)變量,把成形載荷、填充率、晶粒尺寸作為目標(biāo)函數(shù),然后借助Matlab軟件建立參數(shù)變量與目標(biāo)函數(shù)之間的數(shù)學(xué)模型,并利用該軟件中的優(yōu)化模塊對(duì)模型進(jìn)行多目標(biāo)優(yōu)化,得到最佳參數(shù)組合,即摩擦系數(shù)0.2,壓機(jī)速度9.8mm/s,坯料溫度478℃以及等勢線為0.425V時(shí)的預(yù)制坯形狀.通過有限元模擬,證明了該方法的可行性,不僅得出了鍛件的最佳參數(shù)組合,同時(shí)還很好地解決了鍛件成形過程中易出現(xiàn)的缺陷,給復(fù)雜類鍛件預(yù)制坯的合理設(shè)計(jì)提供了一種可行的方法.
[Abstract]:Taking 7050 aluminum alloy forgings as an example, the isopotential lines are obtained by using ANSYS software, that is, the shape of preform billet, together with the speed, temperature and friction factors of the press, as parameter variables, taking forming load, filling rate and grain size as objective functions. Then the mathematical model between the parameter variable and the objective function is established by using Matlab software, and the optimal parameter combination is obtained by using the optimization module of the software to optimize the model. The shape of the prefabricated billet is obtained when the friction coefficient is 0.2, the press speed is 9.8 mm / s, the blank temperature is 478 鈩，

本文編號(hào)：1903939