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논문 기본 정보

자료유형
학술대회자료
저자정보
Hai Yan Yu (Tongji University) Shi Jin Yuan (Tongji University) Zhe Sun (Tongji University)
저널정보
한국소성·가공학회 기타자료 The 8th International Conference and Workshop on numerical simulation of 3D seet metal forming processes (NUMISHEET 2011)
발행연도
2011.8
수록면
291 - 298 (8page)

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초록· 키워드

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A micromechanical flow stress model for the transformation-induced plasticity (TRIP) steel is proposed on the basis of continuum mechanics. In the model, TRIP effect and degradation of elastic modulus are considered. TRIP effect is introduced by regarding the volume fraction of retained austenites as varying with plastic strain. Degradation of elastic modulus is evaluated by an empirical expression. Both the contribution of individual phases and that of interaction between constituent phases to the overall stress are taken into account. The proposed model is introduced into LSDYNA software to simulate the cup forming and U-channel springback. Cup drawing and U-channel bending experiments are provided. Comparison shows that formability results simulated with TRIP effect are closer to the experimental ones.

목차

Abstract
INTRODUCTION
1. FLOW STRESS MODEL
2. FORMING SIMULATION
3. EXPERIMENTS AND DISCUSSION
CONCLUSIONS
REFERENCES

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