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Journal of Failure Analysis and Prevention

, Volume 12, Issue 3, pp 267–272 | Cite as

Impact Simulation on Ductile Metal Pipe with Polymer Coating by a Coupled Finite Element and Meshfree Method

  • Yi Gong
  • Zhen-Guo Yang
  • Yu-Fei Wang
Technical Article---Peer-Reviewed

Abstract

It is common knowledge that conventional finite element method (FEM) has intrinsic limitations in analyzing large deformation problems like high-velocity impact, explosion, etc. because of mesh distortion and tangling; while these problems can be easily avoided by the meshfree method (MM), the latter involves greater computation time. Therefore, in this article, in order to simultaneously utilize the respective advantages of the two methods, a coupled simulation method between both FEM and MM was employed to analyze the high-velocity impact on ductile metal pipe with polymer coating. The impacted area with large deformation was discretized by SPH (smoothed particle hydrodynamics) particles, a classic meshfree model, and the remaining section was modeled by FEM meshes. By this method, the interfacial shear stresses between the coating and the substrate and the residual stresses beneath the contact points were studied, which would have referenced values in analyzing failure modes of components with similar composite structure. Then, the results were compared with sole FEM and MM too.

Keywords

Finite element Meshfree Smoothed particle hydrodynamics (SPH) Impact 

Notes

Acknowledgments

This study was supported by the Shanghai Leading Academic Discipline Project (Project Number: B113). Meanwhile, Yi Gong also appreciate the help from Professor Shaofan Li’s research group in Department of Civil and Environmental Engineering at University of California, Berkeley under the Short-term International Exchange Programme Fund for Doctoral Students of Fudan University.

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Copyright information

© ASM International 2012

Authors and Affiliations

  1. 1.Department of Materials ScienceFudan UniversityShanghaiPeople’s Republic of China

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