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Modeling shockwaves and impact phenomena with Eulerian peridynamics

Journal Article · · International Journal of Impact Engineering
 [1];  [1];  [1];  [2];  [2]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  2. The Boeing Company, Seattle, WA (United States)
Most previous development of the peridynamic theory has assumed a Lagrangian formulation, in which the material model refers to an undeformed reference configuration. Here, an Eulerian form of material modeling is developed, in which bond forces depend only on the positions of material points in the deformed configuration. The formulation is consistent with the thermodynamic form of the peridynamic model and is derivable from a suitable expression for the free energy of a material. We show that the resulting formulation of peridynamic material models can be used to simulate strong shock waves and fluid response in which very large deformations make the Lagrangian form unsuitable. The Eulerian capability is demonstrated in numerical simulations of ejecta from a wavy free surface on a metal subjected to strong shock wave loading. The Eulerian and Lagrangian contributions to bond force can be combined in a single material model, allowing strength and fracture under tensile or shear loading to be modeled consistently with high compressive stresses. Furthermore, we demonstrate this capability in numerical simulation of bird strike against an aircraft, in which both tensile fracture and high pressure response are important.
Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1360930
Alternate ID(s):
OSTI ID: 1398102
Report Number(s):
SAND--2017-5347J; PII: S0734743X16308934
Journal Information:
International Journal of Impact Engineering, Journal Name: International Journal of Impact Engineering Journal Issue: C Vol. 107; ISSN 0734-743X
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (5)

Spallation Analysis of Concrete Under Pulse Load Based on Peridynamic Theory journal January 2020
A non-ordinary state-based Godunov-peridynamics formulation for strong shocks in solids journal June 2019
Modeling and simulation of ice–water interactions by coupling peridynamics with updated Lagrangian particle hydrodynamics journal July 2019
Peridynamics review journal October 2018
Attenuation of waves in a viscoelastic peridynamic medium journal May 2019

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