Journal of Mechanical Science and Technology

The Korean Society of Mechanical Engineers (대한기계학회)
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A Contact Algorithm in the Low Velocity Impact Simulation with SPH

  • Min, Oak-Key (Department of Mechanical Design and Production, Yonsei University) ;
  • Lee, Jeong-Min (Technical Research Laboratory, Angang Plant, Poongsan Corporation) ;
  • Kim, Kuk-Won (Graduate School, Yonsei University) ;
  • Lee, Sung-Soo (Graduate School, Yonsei University)
  • Published : 2000.07.01
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Abstract

The formulation of Smoothed Particle Hydrodynamics (SPH) and a shortcoming of traditional SPH in contact simulation are presented. A contact algorithm is proposed to treat contact phenomenon between two objects. We describe the boundary of the objects with non-mass artificial particles and set vectors normal to the contact surface. Contact criterion using non-mass particles is established in this study. In order to verify the contact algorithm, an algorithm is implemented in to an in-house program; elastic wave propagation is an analysed under low velocity axial impact of two rods. The results show that the contact algorithm eliminates the undesirable phenomena at the contact surface; numerical result with the contact algorithm is compared with theoretical one.

Keywords

References

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