Computer-Aided Design of Protective Structures: Numerical Simulations and Experimental Validation

Sumita Dey; Tore Børvik; Odd Sture Hopperstad

doi:10.4028/www.scientific.net/AMM.82.686

Paper Titles

Blast Wave Effects from Internal Explosion of Subsurface Explosive Storage Facility
p.663

Clearing of Blast Waves on Finite-Sized Targets – an Overlooked Approach
p.669

Blast Testing and Analysis of Composite Cable Shields
p.675

Research of Elastomeric Protective Layers Subjected to Blast Wave
p.680

Computer-Aided Design of Protective Structures: Numerical Simulations and Experimental Validation
p.686

Designing a High Energy Rockfall Kit
p.692

Progressive Collapse Mitigation in Multistory Tilt-up Structural Systems
p.698

Use of External Testing Methods to Assess Damage on Rockfall Protection Structures
p.704

Protection Effect on a Ballistic Impact of NATO 7.62 Ball Bullet into Helicopter Drive Shaft: Numerical Simulation
p.710

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Computer-Aided Design of Protective Structures: Numerical Simulations and Experimental Validation

Abstract:

This paper aims through several numerical studies to highlight some effects of layering plates in ballistic protection. The possible increase in perforation resistance by varying the material properties of the plates, the individual plate thickness (the total plate thickness is constant) and the stacking of individual plates in a double-layered target when struck by blunt and ogival nose projectiles has been investigated. This was done by conducting non-linear finite element simulations of the perforation process using an experimentally validated numerical model and an explicit finite element code. These studies are difficult to carry out experimentally due to the many materials and thicknesses involved and computer-aided design is thus an attractive approach. The numerical design indicates that it is possible to considerably increase the overall ballistic protection level by using double-layered plates and a proper design. Some of the most promising designs were then selected for experimental validation. The experimental tests gave completely opposite results than the computer-aided design, and the reasons for this will be discussed in some detail.