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A Fast Running Loading Methodology for Ground Vehicle Underbody Blast Events
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 03, 2018 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
A full-system, end-to-end blast modeling and simulation of vehicle underbody buried blast events typically includes detailed modeling of soil, high explosive (HE) charge and air. The complex computations involved in these simulations take days to just capture the initial 50-millisecond blast-off phase, and in some cases, even weeks. The single most intricate step in the buried blast event simulation is in the modeling of the explosive loading on the underbody structure from the blast products; it is also one of the most computationally expensive steps of the simulation. Therefore, there is significant interest in the modeling and simulation community to develop various methodologies for fast running tools to run full simulation events in quicker turnarounds of time. This paper discusses investigation of a fast running blast loading methodology wherein the effects of the soil can be adequately captured without having to employ a highly detailed and computationally intensive soil/explosive model, and the interactions thereof (with each other and with the vehicle), in the simulation. The paper will also present a basis of such methodology utilizing the free air-blast loading data that is readily available and implemented in LS-DYNA, the technical approach for matching the buried blast loading patterns using free-air blast datasets and selection of test cases for evaluation and validation. Test cases include simple flat plate with high deformation and a generic vehicle representative of a military ground vehicle. The results from the development and validation of the methodology are presented along with future technical development strategies.
CitationRamalingam, J. and Thyagarajan, R., "A Fast Running Loading Methodology for Ground Vehicle Underbody Blast Events," SAE Technical Paper 2018-01-0620, 2018, https://doi.org/10.4271/2018-01-0620.
Data Sets - Support Documents
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- Thyagarajan, R., “End-to-End System Level M&S Tool for Underbody Blast Events,” 27th Army Science Conference, Army Technology Showcase, FL, Nov 29-Dec 2. DTIC Report # AD A550921.
- Ramalingam, J., Chandra, S., and Thyagarajan, R., “Reduced Order Modeling for Rapid Simulations of Blast and Rollover Events of a Ground Vehicle and Its Occupants Using Rigid Body Dynamic Models,” NDIA Ground Vehicle Systems Engineering and Technology Symposium (GVSETS) Modeling & Simulation, Testing and Validation (MSTV) Mini-Symposium, Novi, Michigan, August 12-14, 2014.
- Parthasarathy, M., Kosarek, P., Santini, J., and Thyagarajan, R., “Methodology Development of Computationally-Efficient Full Vehicle Simulations for the Entire Blast Event,” NDIA Ground Vehicle Systems Engineering and Technology Symposium (GVSETS) Modeling & Simulation, Testing and Validation (MSTV) Mini-Symposium, Novi, Michigan, August 4-6, 2015. DTIC Report # AD A626806.
- Jiang, W., Bennett, A., Vlahopoulos, N., Castanier, M. et al., “A Reduced-Order Model for Evaluating the Dynamic Response of Multilayer Plates to Impulsive Loads,” SAE Int. J. Passeng Cars - Mech. Sys 9(1):83-89, 2016, doi:10.4271/2016-01-0307.
- Li, L., Stowe, N., Vlahopoulos, N., Mohammad, S., Barker, C., Thyagarajan, R. (2013). “Utilization of Fast Running Models in Buried Blast Simulations of Ground Vehicles for Significant Computational Efficiency,” NDIA Ground Vehicle Systems Engineering and Technology Symposium (GVSETS) Modeling & Simulation, Testing and Validation (MSTV) Mini-Symposium, Troy, Michigan, August 21-22, DTIC Report # AD A590114.
- Final Report of HFM-090 Task Group 25, “Test Methodology for Protection of Vehicle Occupants against Anti-Vehicular Landmine Effects,” NATO RTO TECHNICAL REPORT TR-HFM-090, April 2007.
- Sundaramurthy, A., and Chandra, N., “A Parametric Approach to Shape Field-Relevant Blast Wave Profiles in Compressed-Gas-Driven Shock Tube,” Frontiers in Neurology 5:Article 253, Dec 2014, doi:10.1038/srep26992.
- Cabello, B., “Dynamic Stress Analysis of the Effect of an Air Blast Wave on a Stainless Steel Plate,” Project Report Submitted to the Graduate Faculty, (Hartford, Connecticut, Rensselaer Polytechnic Institute, 2011, doi:10.1007/978-81-322-2190-6_32.
- Remennikov, A., “A Review of Methods for Predicting Bomb Blast Effects on Buildings,” Journal of Battlefield Technology 6:5-10, 2003.
- Kingery, C., and Bulmarsh, G., “Airblast Parameters from TNT Spherical Air Burst and Hemispherical Surface Burst,” ARBRL-TR-02555S, 1984.
- Thyagarajan, R., Ramalingam, J., Kankanalapalli, S., and Vunnam, M., “Multi-Temporal Analysis of Underbody Improvised Explosive Device (IED) Theater Events on Ground Vehicles Moving in a Convoy Using Modeling and Simulation (M&S)”. TARDEC Report # 23912, 2013.
- William, K. et al., “Validation of Loading Model for Simulating Blast Mine Effects on Armored Vehicles,” 7th International LS-Dyna Users Conference, Dearborn, Michigan, 6-35, May 2002.
- Thyagarajan, R., Diehl, M., and Kankanalapalli, S., “TARDEC Generic Hull Underbody Blast Benchmark Test: Setup and Results,” TARDEC Report # 28198. Approved for Public release, Aug 2016.