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Computational Particle Mechanics

, Volume 6, Issue 1, pp 45–53 | Cite as

Preliminary effort in developing the smoothed material point method for impact

  • Lisha He
  • Yong Gan
  • Zhen Chen
Article
  • 91 Downloads

Abstract

The smoothed material point method (SMPM) is being developed for better simulating impact problems, based on the respective strengths of the original material point method (MPM) and the smoothed particle hydrodynamics (SPH). The field variables of each material point (including velocity and stress) are re-calculated by one smoothed reconstruction procedure, while the rest of the solution steps are the same as those in the original MPM algorithm. In this preliminary study, the numerical performances of the original MPM, SPH and the SMPM are examined and compared using one-dimensional transient problems including impact. It is demonstrated that the numerical oscillations can be effectively reduced by the proposed reconstruction, showing the superiority of the SMPM over the original MPM and SPH in terms of solution accuracy and stability. As compared with the SPH, the SMPM exhibits significantly higher efficiency. Numerical results also illustrate that the proposed SMPM possesses the advantages of both the MPM and the SPH, which warrants the further development of the SMPM for general applications.

Keywords

Material point method Smoothed particle hydrodynamics Large deformation Impact Transient responses 

Notes

Acknowledgements

Funding was provided by National Natural Science Foundation of China (Grant No. 11232003).

Compliance with ethical standards

Conflict of interest

On behalf of all authors, the corresponding author states that there is no conflict of interest.

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Copyright information

© OWZ 2018

Authors and Affiliations

  1. 1.School of Civil Engineering and ArchitectureNanchang UniversityNanchangChina
  2. 2.Faculty of EngineeringZhejiang UniversityHangzhouChina
  3. 3.Key Laboratory of Soft Machines and Smart Devices of Zhejiang ProvinceZhejiang UniversityHangzhouChina
  4. 4.Department of Civil and Environmental EngineeringUniversity of MissouriColumbiaUSA

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