Local-nonlocal coupling in Emu/PDMS

Technical Report · 01 October 2020

DOI:https://doi.org/10.2172/1822582· OSTI ID:1822582

Silling, Stewart A. ^[1]

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1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

A technique called the splice method for coupling local to peridynamic subregions of a body is described. The method relies on ghost nodes, whose values of displacement are interpolated from nearby physical nodes, to make each subregion visible to the other. In each time step, the nodes in each subregion treat the nodes in the other subregion as boundary conditions. Adaptively changing the subregions is possible through the creation and deletion of ghost nodes. Example problems in 2D and 3D illustrate how the method is used to perform multiscale modeling of fracture and impact events within a larger structure.

• Research Organization: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: NA0003525
• OSTI ID: 1822582
• Report Number(s): SAND2020-11382; 700186
• Country of Publication: United States
• Language: English

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