2006•Suxing gongcheng xuebaoRequires access

Influence of internal pressure on hydroforming of Y-shaped tubes

Xueliang An

Abstract

A numerical simulation analysis has been conducted for hydroforming of Y-shaped tubes. Five loading paths with different internal pressure from 87MPa to 145MPa have been used. Failure modes are analyzed such as the transition zone is depressed and the height of branch-tube is not enough. The thickness of specific spots is analyzed for different stage of hydroforming when internal pressure is 116MPa, The influence of internal pressure on thickness distribution of parts is discussed. Through numerical simulation it is indicated that 106MPa-126MPa is a reasonable range for hydroforming of Y-shaped tubes, but for different internal pressure the min thickness of parts is different.

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Key concepts: Hydroforming, Internal pressure, Tube (container), Materials science, Computer simulation, Internal forces, Structural engineering, Mechanics