Transactions of Materials and Heat Treatment

Title：Theoretical analyses of forming limits in tube hydroforming

Authors： TENG Hong-chun (Mechanical Department Nanjing Institute of Industry Technology Nanjing 210046 China)

Unit：

KeyWords： tube hydroforming load path stress state forming limits

ClassificationCode：TG394

year,vol(issue):pagenumber：2008,33(2):103-105

Abstract：

Theoretical analysis was conducted to study the stress and strain state in tube hydroforming.The mechanical rule of tube hydroforming was disclosed.The distribution of typical stress state on yield ellipse and the relation of internal pressure and axial force when tube became plastic deformation condition were given out.At last,the load path range on FLD and the basic rule of load path control method were also discussed.

Funds：

江苏省高校自然科学基金(04KJD460086);; 江苏省精密制造工程研发开放基金(ZK06-01-01);; 江苏省青蓝工程中青年学科带头人资助项目(061207)

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