대한기계학회논문집A (Transactions of the Korean Society of Mechanical Engineers A)
- 제20권5호
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- Pages.1562-1572
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- 1996
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- 1226-4873(pISSN)
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- 2288-5226(eISSN)
DOI QR Code
관성효과가 고려된 강소성 유한요소법을 이용한 고속변형해석
High-Velocity Deformation Analysis Using the Rigid-Plastic Finite Elemement Method Considering Inertia Effect
- Yoo, Yo-Han (Dept. of Mechanical Engineering, Korea Advanced Institute of Science and Technology) ;
- Park, Khun (Dept. of Mechanical Engineering, Korea Advanced Institute of Science and Technology) ;
- Yang, Dong-Yol (Dept. of Mechanical Engineering, Korea Advanced Institute of Science and Technology)
- 발행 : 1996.05.01
초록
The rigid-plastic finite element formulation including the inertia force is derived and then the rigid-plastic finite elemnt program considering the inertia effect is developed. In order to consider the strain hardening, strain rate hardening and thermal softening effects which are frequentrly observed in high-velocity deformation phenomena, the Johnson-Cook constitutive odel is applied. The developed program is used to simulate two high-velocity deformation problemss ; rod impact test and hdigh-velocity compression precess. As a result of rod impact test simulation, it is found that the siulated result has a good agreement with the experimental observation. Through the high-velocity compression process simulation. it is also found that the accuracy of the simulated results is dependent upon the time increment size and mesh size.
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