重型机械
重型機械
중형궤계
HEAVY MACHINERY
2015年
4期
48-52
,共5页
上剪刃几何参数%高速滚切剪剪切方法%等效应力分布%剪切断面质量%剪切力
上剪刃幾何參數%高速滾切剪剪切方法%等效應力分佈%剪切斷麵質量%剪切力
상전인궤하삼수%고속곤절전전절방법%등효응력분포%전절단면질량%전절력
the upper blade geometric parameters%high-speed rolling shear method%the equivalent stress dis-tribution%the cross section quality%the shear force
针对目前国内常用金属板在剪切过程中剪切效率低、剪切断面质量差及高能耗等问题,提出了一种带有上剪刃几何参数的高速滚切剪剪切方法。重点分析了该种剪切方法对等效剪切应力分布、剪切断面质量和剪切力的影响,并利用DEFORM-3 D有限元软件对金属板高速剪切的断裂过程进行了数值模拟研究。模拟结果表明,优化后的高速剪切可以使等效剪切应力比较均匀地分布于剪切区域,并获得了良好的钢板剪切断面质量;与普通滚切剪进行对比,其最大剪切力在切入阶段和滚切阶段均有一定程度的减小,实现了节能剪切的目的。
針對目前國內常用金屬闆在剪切過程中剪切效率低、剪切斷麵質量差及高能耗等問題,提齣瞭一種帶有上剪刃幾何參數的高速滾切剪剪切方法。重點分析瞭該種剪切方法對等效剪切應力分佈、剪切斷麵質量和剪切力的影響,併利用DEFORM-3 D有限元軟件對金屬闆高速剪切的斷裂過程進行瞭數值模擬研究。模擬結果錶明,優化後的高速剪切可以使等效剪切應力比較均勻地分佈于剪切區域,併穫得瞭良好的鋼闆剪切斷麵質量;與普通滾切剪進行對比,其最大剪切力在切入階段和滾切階段均有一定程度的減小,實現瞭節能剪切的目的。
침대목전국내상용금속판재전절과정중전절효솔저、전절단면질량차급고능모등문제,제출료일충대유상전인궤하삼수적고속곤절전전절방법。중점분석료해충전절방법대등효전절응력분포、전절단면질량화전절력적영향,병이용DEFORM-3 D유한원연건대금속판고속전절적단렬과정진행료수치모의연구。모의결과표명,우화후적고속전절가이사등효전절응력비교균균지분포우전절구역,병획득료량호적강판전절단면질량;여보통곤절전진행대비,기최대전절력재절입계단화곤절계단균유일정정도적감소,실현료절능전절적목적。
Aiming at the present problems such as low efficiency shear , low qualified cross section and high energy consumption , which happened in the process of shearing common used metal plate , a high-speed rolling shearing method with the upper blade geometric parameters is presented .It analyzed the influence of the high-speed rolling shearing method on the equivalent stress distribution , the cross section quality and the shear force , the fracture process of metal plate high-speed shearing was simulated by FEA software DEFORM-3D.Simulated results show that the optimized high-speed rolling shear with the upper blade geometric parameters can make the equivalent stress distribute evenly in the shearing area , and it can obtain the high cross section quality of metal plate;Comparing the numerical simulations with normal rolling shear , the maximum shear force are decreasing in cutting and rolling shearing , the energy saving shear is realized .