Proceedings of the Korean Society for Technology of Plasticity Conference (한국소성가공학회:학술대회논문집)
- 1994.03a
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- Pages.37-46
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- 1994
트로코이달 헬리컬 기어의 비정상상태 유한요소해석
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- Yong Bok Park (Dept. of Precision Engineering & Mechatronics, KAIST) ;
- Dong Yol Yang (Dept. of Precision Engineering & Mechatronics, KAIST)
- Published : 1994.03.01
Abstract
In metal forming, there ar problems with recurrent geometric characteristics and without explicitly prescribed boundary conditions. In such problems, so-called recurrent boundary conditions must be introduced. The present study deals with nonsteady-state three-dimensional finite element analysis for extrusion of a trocoidal helical gear through a curved die. The boundary-directed remeshing scheme based on the modular remeshing technique is developed to reduce the errors arising in fitting old and new mesh systems. The computed extrusion pressure in reaching the near steady-state loading stage is compared with the results of the experiment and the steady-state analysis. The three-dimensional deformed pattern involving warping at the extruded end due to torsional deformation mode is demonstrated.