汽車前副車架之管件液壓製程研究
Other Title
Design of a Tube-Hydroformed Automotive Front Sub-Frame
Journal
鍛造
Journal Volume
23
Journal Issue
1
Start Page
26
End Page
33
ISSN
1023-750X
Date Issued
2014-04
Author(s)
Abstract
由於節能減碳議題日益被重視，汽車產業已廣泛使用管件液壓成形技術取代傳統沖壓技術，減輕結構重量與加強車身強度，以達低耗油之目的。本研究係針對汽車前懸吊系統之前副車架沖壓件設計修改為液壓件，進行產品強度與成形性之分析。本研究首先參考截面分析之結果提出成品面設計修改之方向與目標，包含強度需求與可製造性；接著以修改後之成品面分析產品強度，探討其受力後應力與位移分佈，及撞擊後變形機制與內能吸收情況，比較是否能達沖壓件之強度需求。最後以實際前副車架部件與模擬分析結果比較，確認有限元素模擬分析之準確性。
As carbon reduction issues are increasingly considered an important issue, the tube hydroforming technology has been widely used in the automotive industry and replaced traditional stamping techniques, due to its ability to achieve low fuel consumption by reducing structural weight and enhancing body strength. This study conducted the product strength and formability analysis regarding the design modification from a stamped and welded assembly to a hydro-formed part for the automotive front sub-frame used in the front suspension system. First, this study referred to the cross-sectional analysis and promoted the product modification directions and goals, including strength requirement and manufacturability. Then according to the product strength analysis, this study discussed the stress and displacement distributions under the loading condition. Both the deformation mechanism and internal energy absorption after being impacted were analyzed and compared with those resulted from the stamped and welded assembly. The validity of the proposed design was confirmed by the actual platform test.
Type
journal article