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Geometrically nonlinear analysis of thin-walled structures using efficient Shell-based SPH method
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DOI：10.1016/j.commatsci.2013.12.010.png)
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Abstract
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In this paper a shell-based meshless formulation is proposed for the geometrically nonlinear analysis of thin-walled structures using an explicit dynamics scheme based on the Smoothed Particle Hydrodynamics (SPH) method. In the present investigation the SPH method is modified to deal with shell-like structures, while keeping its character of a strong formulation based on the principle of collocation directly applied on the differential equilibrium equations. The current SPH formulation is an extension of the continuum-improved and stabilized SPH method allowing a thin structure to be modeled using only one layer of particles to represent the shell mid-surface. Application of the present Shell-based SPH (SSPH) formulation for the analysis of several benchmarks including geometrically nonlinear behavior shows its validity and its potential especially in terms of CPU time saving while keeping a very good level of accuracy compared to the classical SPH method and to the Finite Element method. (C) 2013 Elsevier B.V. All rights reserved.
Keywords:
Geometrically nonlinear analysis
Smoothed particle hydrodynamics
Meshless
Mindlin-Reissner Shell
Explicit dynamics
Strong formulation
Journal
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3.3
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1.3W
Citations:
3.6W