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High-Velocity Deformation Analysis Using the Rigid-Plastic Finite Elemement Method Considering Inertia Effect
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 Title & Authors
High-Velocity Deformation Analysis Using the Rigid-Plastic Finite Elemement Method Considering Inertia Effect
Yoo, Yo-Han; Park, Khun; Yang, Dong-Yol;
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 Abstract
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.
 Keywords
Reigid-Plastic Finite Element Method;Inertia Effect;Rod Impact Simulation;High-Velocity Compression Simulation;
 Language
Korean
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