Validation of Numerical Modeling Techniques for Unbonded Post-Tensioned Beams under Low Velocity Impact

This study validates the use of available tools for nonlinear finite element dynamic analysis (NLFEDA) modeling unbonded post-tensioned reinforced concrete (PT-RC) members under drop weight impact and is first attempt at low-velocity to authors’ knowledge. The was performed in two parts. portion determined appropriate mesh material properties testing setup specimens that were generated by authors. second then established level convergence model based on a wide range design loading parameters. NLEFDA validated using experimental data obtained from laboratory investigations behavior shear-critical flexural PT-RC members. interaction between prestress, as applied PT tendon, surrounding well modeled presence large shear failures concrete. techniques, coupled with studies, can be helpful expanding understanding