鋁合金管旋形製程之有限元素分析

Finite Element Study on Spinning Process for an Aluminum Tube

范光堯(Kuang-Jau Fann)

《鍛造》 30卷4期 (2021/12) Pp. 20-34

摘要

旋形製程技術以其係一增量加工的製程方法，具所需負荷低、設備簡易、模具壽命長等優勢，而廣用於汽機車輪圈的輪輞製造上。然旋形工具幾何及其進給等參數對旋形製程及其結果的影響，尚未見有系統的研究，因此，本文嘗試應用商用有限元素分析軟體LS-DYNA的顯式解，就旋形工具的直徑、攻角與鼻角以及進給等參數，對旋形製程及其結果的影響進行探討。初步結果顯示旋形工具的直徑、攻角與鼻角等幾何參數對旋形負荷的影響並不顯著，但製程參數的軸向進給越大時，旋形負荷也越大，同時出現的張口現象越顯著。

關鍵字

鋁合金 ； 管材 ； 旋形製程 ； 有限元素分析

並列摘要

Spinning is one of an incremental forming process method, which requires low load, simple equipment and thus has a long tool life. Therefore, it is widely used in manufacturing rims of vehicle wheels. However, the influence of parameters, such as geometry and feed of the spinning tool on the process as well the spun results has not yet been systematically investigated. This article is thus aimed to have a glimpse into the effect of the spinning tool parameters in focus on its diameter, angle of attack, nose radius, and feed by applying the explicit code of the commercial finite element analysis software LS-DYNA. Preliminary results show that geometric parameters such as the diameter, angle of attack and nose radius of spinning tools have no significant effect on the spinning load. However, the greater the axial feed, the greater the spinning load, and the more pronounced the flaring at the tube end.

並列關鍵字

Aluminum Alloy ； Tube ； Spinning ； Finite Element Analysis