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Abstract: Author systematically answers some questions on mechanical
essence of deforming rule in the mechanical analysis field of
superplastic tensile forming, which is mostly based on the author’s
works in this field. Emphasizes the measure methods of strain-rate
sensitivity index m and strain hardening index n, subtly analyzes impact
of deforming path on n and m, which is based on typical deforming paths
and introduces constitution equation of variable parament superplastic
ensile forming. Finally brings forward his opinion on some attentional
issues in the field of superplastic research. Aims at intercommunion
with colleague and fellow-scholars’ rectification.
Key words: Superplastic Strain hardening index Strain-rate sensitivity
index Constitution equation
CLC No: TH871
TB302.3
纪念《机械工程学报》创刊50周年——“机械工程技术的历史、进展与展望”主题征文. 国家自然科学基金重点资助项目(59835190).
Received 20030808, received in revised form 20030915
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