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Development and Validation of a Thrie-Beam AGT LS-DYNA Model




Ryan Bickhaus, Jennifer Rasmussen (Schmidt), John Reid




The primary purpose of this research effort was to develop a validated LS-DYNA model of a tangent approach guardrail transition (AGT) with standardized concrete buttress. The AGT model was modeled after the test installation in test no. AGTB-2. The simulation results were compared to the data collected during test no. AGTB-2. Throughout the validation process, several changes were made to the model, including part geometries, material properties, and vehicle models, in an effort to more accurately model the physical crash test. Three simulations were evaluated using the procedures for verification and validation (V&V) of computer simulations used for roadside safety applications, outlined in National Cooperative Highway Research Program (NCHRP) Report No. W179, two of which were determined to be validated with exceptions. The validated AGT model was utilized in the Midwest Pooled Fund Year 29 Flared AGT Phase I research effort to identify the critical flare rates for an AGT installation.


Highway Safety, Crash Test, Roadside Appurtenances, MASH 2016, LS-DYNA, Approach Guardrail Transition, AGT, Computer Simulation

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