Multi-Stage Forming Analysis and Experiment of Flange Sleeve

凸緣套管多到次成形分析與實驗

施經緯(Ching-Wei Shih) ； 鄒國益(Gow-Yi Tzou) ； 張高華(Kao-Hua Chang)

《中國機械工程學刊》 35卷3期 (2014/06) Pp. 243-250

摘要

本研究假設在定剪摩擦下針對凸緣套管進行6道次有限元素模擬成形分析，以Deform 3D商業套裝軟體進行5道次鍛造成形及1道次通孔成形模擬以獲得所需之模具尺寸。可求出各道次之等效應力、等效應變、速度場及鍛造負荷，實際進行實驗比較各道次尺寸後可知95%之模擬準確性，可驗證有限元素模擬之適用性。為了瞭解模具所承受之應力分佈，探討模仁內徑、模仁外徑及應力環干涉配合之徑向應力與周向應力之影響，並探討模具應力是否超過模具材料之容許強度。本研究所提出之結果對於扣件產業有重大之影響。

並列摘要

The study assumes constant shear friction to carry out 6-stage the finite element forming simulations, the 5-stage forging forming and 1-stage piercing forming are simulated to obtain the dimensions of dies by Deform 3D FEM analysis software. The effective stress, the effective strain, the velocity field and the forging force in each stage can be obtained. In each stage, the realistic multi-stage forging has been performed to compare the product dimensions with the stimulation results to verify the acceptance of FEM analysis model. The similarity reaches over 95%. With a view to realizing the stress distribution of dies, especially explore the circumferential stress, the radial stress, and the effective stress of inner mold, the outer mold, and the stress ring occurred by single fit interference and the stress ring fit interference. Furthermore, checking whether the effective stress of die occurred exceeds the allowable yield strength of die material to avoid the die failure. The research results proposed have of great important influence to the fastener industries.

並列關鍵字

Flange sleeve ； Stress ring fit interference ； Die stress