重型机械
重型機械
중형궤계
HEAVY MACHINERY
2015年
3期
58-61
,共4页
钢丝%缩径%数值模拟%应力应变
鋼絲%縮徑%數值模擬%應力應變
강사%축경%수치모의%응력응변
steel wire%necking%numerical simulation%stress and strain
旋压技术广泛应用在旋转对称类零件的加工成形中，但其在小直径实心轴类件上的应用尚未起步。本文研究对象为直径10.5 mm，抗拉强度为1450 MPa的高强度钢丝，通过ANSYS／LS-DYNA有限元分析软件，对高强度钢丝（下文中以钢丝代称）缩径过程进行计算机数值模拟，获得了成形过程中钢丝模型和接触区横截面的应力与应变的分布规律，以及钢丝表面上一单元的应力和应变分布趋势，分析了缩径成形的变形机理，并对模型结果进行了可靠性验证。可为钢丝的缩径旋压加工提供理论依据和参考。
鏇壓技術廣汎應用在鏇轉對稱類零件的加工成形中，但其在小直徑實心軸類件上的應用尚未起步。本文研究對象為直徑10.5 mm，抗拉彊度為1450 MPa的高彊度鋼絲，通過ANSYS／LS-DYNA有限元分析軟件，對高彊度鋼絲（下文中以鋼絲代稱）縮徑過程進行計算機數值模擬，穫得瞭成形過程中鋼絲模型和接觸區橫截麵的應力與應變的分佈規律，以及鋼絲錶麵上一單元的應力和應變分佈趨勢，分析瞭縮徑成形的變形機理，併對模型結果進行瞭可靠性驗證。可為鋼絲的縮徑鏇壓加工提供理論依據和參攷。
선압기술엄범응용재선전대칭류령건적가공성형중，단기재소직경실심축류건상적응용상미기보。본문연구대상위직경10.5 mm，항랍강도위1450 MPa적고강도강사，통과ANSYS／LS-DYNA유한원분석연건，대고강도강사（하문중이강사대칭）축경과정진행계산궤수치모의，획득료성형과정중강사모형화접촉구횡절면적응력여응변적분포규률，이급강사표면상일단원적응력화응변분포추세，분석료축경성형적변형궤리，병대모형결과진행료가고성험증。가위강사적축경선압가공제공이론의거화삼고。
Spinning technology is widely used in process forming of the rotational symmetric parts , however , it has not yet started in the application of small-diameter solid shaft parts .In this paper , the researchful object is high-strength steel wire.The tensile strength is 1 450 MPa and its diameter is 11mm.In this article, this paper uses steel wire in substitution for the high-strength steel wire .The necking process of high -strength steel wire is simulated by ANSYS/LS-DYNA finite element software .The distribution rule of stress and strain of contact area of the cross section and the steady state of steel wire are obtained , including the distribution trend of stress and strain of one unit on the steel wire surface , explained the deformation mechanism of necking forming .The results provide new method on the process of steel wire .
