Theory and Evaluation of Concrete Material Model 159

The roadside safety community supplements real world crash test data with LS-DYNA simulations performed on the computer. The accuracy of the simulations depends, in part, upon the material models that are formulated to simulate the behavior of the roadside structures and vehicle materials. One important roadside structural material is concrete. A comprehensive concrete material model was developed, implemented in the LS-DYNA finite element code, and evaluated for simulating the deformation and damage to reinforced concrete beams from dynamic impact. For ease of use, default material properties for concrete are incorporated into the model as a function of concrete compressive strength. Correlations with drop tower and bogie vehicle impact tests are used to evaluate the model and finalize the default material properties.