| 3-D Finite Element Analysis of Superplastic Forming/Diffusion Bonding Processes with Consideration of Contact between Deformable Bodies |
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Yung-Kil Kang, Jae-Sun Song, Sung-Suk Hong, Yong-Hwan Kim |
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| 변형체간의 접촉을 고려한 3차원 초소성 성형/확산접합의 유한요소해석 |
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강영길, 송재선, 홍성석, 김용환 |
1국방과학연구소
2충남대학교 대학원
3충남대학교, BK21 메카트로닉스사업단 |
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| Abstract |
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Superplastic forming/diffusion bonding(SPF/DB) processes with inner contact were analyzed using a 3-D rigid visco-plastic finite element method. A constant-triangular element based on membrane approximation and an incremental theory of plasticity are employed for the formulation. The hierarchical search algorithm for the contact searching has been applied. The algorithms for contact force processing were designed to handle equally well contact between deformable bodies, as well as rigid bodies. The plate of three and four sheets for 3-D SPF/DB model are analyzed using the developed program. The validity for the analysis is verified by comparison between analysis, experiment and results in the literature. |
| Key Words:
Superplastic Forming/Diffusion Bonding(SPF/DB), Hierarchical Search Algorithm |
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