鑒于當(dāng)前汽車輕量化設(shè)計(jì)的趨勢(shì),車用空心階梯齒輪軸及其徑向鍛造工藝（RFP）得到了廣泛研究。借助熱力耦合有限元模型,模擬了空心階梯齒輪軸的徑向鍛造工藝。此外,采用正交實(shí)驗(yàn)設(shè)計(jì)方法,獲得了溫度、旋轉(zhuǎn)角度、徑向壓下量等工藝參數(shù)對(duì)成形過(guò)程的影響,并采用應(yīng)變不均勻性因子評(píng)價(jià)鍛造工件應(yīng)變的不均程度。研究表明,橫截面上的最大、最小應(yīng)變分別出現(xiàn)在空心階梯齒輪軸內(nèi)徑和外徑邊緣。該徑向鍛造最優(yōu)工藝參數(shù)組合為溫度為780°C,旋轉(zhuǎn)角度為21°/沖程,徑向壓下量為3 mm。 

【文章來(lái)源】：Journal of Central South University. 2020,27(06)EISCICSCD

【文章頁(yè)數(shù)】：12 頁(yè)

【文章目錄】：
1 Introduction
2 Experimental methods
    2.1 FEM modeling
    2.2 Orthogonal experimental design
        2.2.1 Evaluation index of strain inhomogeneity
        2.2.2 Orthogonal test scheme
3 Results and discussion
    3.1 Numeric experiment results
        3.1.1 General characteristics of strain distribution
        3.1.2 Intuitive result analysis
        3.1.3 Variance result analysis
        3.1.4 Orthogonal design validation
    3.2 Effects of processes on radial forging
        3.2.1 Effect of initial temperature on strain distribution
        3.2.2 Effect of radial reduction on strain distribution
        3.2.3 Effect of rotation rate on strain distribution
    3.3 Experimental verification
4 Conclusions



本文編號(hào)：3216052