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DOE OSTI · 3012215

Finite Element Analysis of the TRUST Nonlinear Dynamics Testbed

Hinerman, Samuel Martin [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)]
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Abstract

This paper builds on prior work conducted within the Los Alamos National Laboratory (LANL) Testbeds to Reduce Uncertainty in Simulations and Tests (TRUST) program. Specifically, it builds on finite element (FE) modeling efforts for the TRUST program’s Nonlinear Dynamics (ND) testbed. Historically, the FE model for the ND testbed has exclusively utilized a Lanczos eigensolver that linearly extracts the system’s natural frequencies. This paper investigates the Abaqus 2024’s explicit dynamic solver, which implements a central difference explicit solver. The central difference method used in Abaqus can capture nonlinear material responses in structural dynamic simulations making it suitable for the ND FE model.

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Hinerman, Samuel Martin [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)]. 2025-12-23. Finite Element Analysis of the TRUST Nonlinear Dynamics Testbed. https://doi.org/10.2172/3012215

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