Numerical Simulations of Dynamic Behavior of Polyurea Toughened Steel Plates under Impact Loading

Abstract

The objective of the work discussed herein is to develop a nonlinear 3D finite element model to simulate dynamic behavior of polyurea toughened steel plates under impact loading. Experimental and numerical work related to model development are presented. Material properties are incorporated into numerical models to account for strain-rate effects on the dynamic behavior of polyurea and steel. One bare steel plate and four polyurea toughened steel plates were tested under impact loading using a pendulum impact device. Displacement time-history data from experimental work was used to validate the numerical models. Details on material model construction, finite element model development, and model validation are presented and discussed. Results indicate that the developed numerical models can reasonably predict dynamic response of polyurea toughened steel plates under impact loading.

Multi-Hazard-Resistant Behavior of CFRP- and Polyurea-Retrofitted Reinforced Concrete Two-Column Piers under Combined Collision–Blast Loading

“…In this study, the polyurea elastic modulus was set to 2520 MPa and the yield strength was 10 MPa. The Poisson’s ratio was set to 0.465 due to this being an almost incompressible material [ 13 ].…”

“…Limited studies have evaluated polyurea performance when placed onto steel or concrete substrates under impact or blast loading. Chen et al [ 13 ] completed experimental and numerical studies that examined polyurea’s influence on the behavior of steel plates under impact loading. Raman et al [ 14 ] experimentally and numerically examined the blast load response of a polyurea-coated RC slab.…”

Viscoelasticity of Chemically Bonded Interfacial Epoxy-Polyurea Matrix per Migration of Epoxy Species via Curing Time Parameter

“…Mechanical energy transferability in composite structural dynamics is a well-accepted design parameter that has been richly investigated [1,2]; yet, the topic, which affects a multitude of applications, deserves far greater attention [3][4][5], inasmuch as the formulation of composite energy transfer via interfacial constituent manipulation of chemically covalent bonds had remained unexplored [6].…”

Synthesis and Mechanical Properties of Polyurea-Based Hybrid Composites for Ballistic Individual Protection

“…Polyurea is a flexible aminoplast, with highly valued properties in terms of softness and flexibility, which, due to its effective energy absorption properties, is commonly used as protective coating on concrete or steel structures. Polyurea coatings combine strength with extensibility; the material being highly resistant, with low flammability and known to mitigate abrasive wear, blast and fragmentation [13][14][15][16][17][18][19][20][21][22][23][24][25]. From the typical application as a protective coating of concrete and steel structures, this elastomeric coating has been proven to withstand not only abrasion, but also rapid loadings like impacts, collisions or explosions [13][14][15][16][17][18][19][20][21][22][23].…”