Numerical simulation of axially loaded concrete columns under transverse impact and vulnerability assessment
By H. Thilakarathna, David P. Thambiratnam, Manicka Dhanasekar, N. Perera. 2010
196 citations recorded by the source corpus.
With a view to assessing the vulnerability of columns to low elevation vehicular impacts, a non-linear explicit numerical model has been developed and validated using existing experimental results. The numerical model accounts for the effects of strain rate and confinement of the reinforced concrete, which are fundamental to the successful prediction of the impact response. The sensitivity of the material model parameters used for the validation is also scrutinised and numerical tests are performed to examine their suitability to simulate the shear failure conditions. Conflicting views on the strain gradient effects are discussed and the validation process is extended to investigate the ability of the equations developed under concentric loading conditions to simulate flexural failure events. Experimental data on impact force–time histories, mid span and residual deflections and support reactions have been verified against corresponding numerical results. A universal technique which can be applied to determine the vulnerability of the impacted columns against collisions with new generation vehicles under the most common impact modes is proposed. Additionally, the observed failure characteristics of the impacted columns are explained using extended outcomes. Based on the overall results, an analytical method is suggested to quantify the vulnerability of the columns.
Subfields: Civil and Structural Engineering, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/8e628a64cca9e3d53c6edaba8c884e6320b7de29
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In Civil and Structural Engineering
In Materials Chemistry
Citations in the corpus
- Study on Impact Behavior and Impact Force of Bridge Pier Subjected to Vehicle Collision (2017, methodology): “[13] used LS-DYNA to conduct the vulnerability assessment on axially loaded concrete columns under impact loading.”
- Effect of the plastic hinge and boundary conditions on the impact behavior of reinforced concrete beams (2017, methodology): “The software has been proven yielding reliable numerical predictions of structural responses to impact loads [16-21].”