摘要
应用大型有限元分析软件ANSYS对物料在偏心弯管机头内部流道中的流动情况进行了分析。建立了有限元模型 ,并根据加工的实际情况选取物料 ,施加边界条件和载荷。分析结果表明 ,挤出橡胶弯管的曲率半径主要取决于物料在偏心机头流道最大间隙和最小间隙Z方向的速度差 ,X ,Y方向的速度与Z方向的速度相比可以忽略不计。由计算结果可知 ,当偏心机头的偏心距超过 2mm时 ,挤出弯管就会发生破裂 ,说明偏心机头生产弯管只适用于偏心距较小的情况。
Flow in eccentric die was analyzed by a finite element analyzing software named ANSYS The analysis clarified that the curving radium of a rubber hose was mainly decided by the ratio of the flow velocity Z in direction in the maximum clearance and the minimum clearance of the die The influence of velocity in X and Y direction is very small and could be ignored According to the analysis, the span of eccentricity was also discussed The result showed that there would be no fluid in the minimum clearance when the eccentricity exceeded 2mm A conclusion then could be drawn that the eccentric die should be used when the eccentricity was smaller than 2mm
