An Eulerian approach to the simulation of deformable solids: Application to finite-strain elasticity

Details An Eulerian approach to the simulation of deformable solids: Application to finite-strain elasticity An Eulerian approach to the simulation of deformable solids: Application to finite-strain elasticity

2009-01-24

arxiv.org/abs/0901.3799v2

Physics

Condensed Matter

Soft Condensed Matter

9 pages

Scientific paper

We develop a computational method based on an Eulerian field called the "reference map", which relates the current location of a material point to its initial. The reference map can be discretized to permit finite-difference simulation of large solid-like deformations, in any dimension, of the type that might otherwise require the finite element method. The generality of the method stems from its ability to easily compute kinematic quantities essential to solid mechanics, that are elusive outside of Lagrangian frame. This introductory work focuses on large-strain, hyperelastic materials. After a brief review of hyperelasticity, a discretization of the method is presented and some non-trivial elastic deformations are simulated, both static and dynamic. The method's accuracy is directly verified against known analytical solutions.

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