This study presents a numerical investigation on the deformation of the circular blanket against a male die under impulsive loading to form a torispherical heads shape. A finite element model was developed and verified with experimental tests for the explosive forming of the torispherical heads made of AA5083 aluminum alloy in the framework of LS-DYNA crash simulator software. The nature of the...

A non-equilibrium molecular dynamics method is employed to study the mechanical response of soda-lime glass (a material commonly used in transparent armor applications) when subjected to the loading conditions associated with the generation and propagation of planar shock waves. Specific attention is given to the identification and characterization of various (inelastic-deformation and energy-d...

In this paper, the non-linear dynamic response of novel steel sandwich panel with hollow I-core subjected to blast loading was studied. Special emphasis is placed on the evaluation of midpoint displacements and energy dissipation of the models. Several parameters such as boundary conditions, strain rate, mesh dependency and asymmetrical loading are considered in this study. The material and geo...

In the current research the maximum deflection of circular plates made of AA5010 and AA1100 alloys under blast load was investigated. Shock waves were produced by exploding a spherical charge in different distances from the center of plates. The ABAQUS software uses conwep equation for blast loading analysis. It was found the results of these simulations have about 30% to 40% inaccuracy in comp...

The main goal of this research is the performance evaluation sampled moment-resisting steel structure against 3D simulated blast loading. In first stage present research, numerically wave verified by comparing with relevant renowned numerical and experimental previous researches. second stage, sensitivity blast-induced pressure to finite element mesh size surrounding air cube dimensions are inv...

Two series of experiments are performed to investigate the dynamic response of various essential components of a class of sandwich structures, under high-rate inertial loads. One consists of dynamic inertia tests and the other involves dynamic impact tests. A split Hopkinson bar apparatus is modified and used for these experiments. First, the energy-absorbing characteristics of the plate materi...

An accurate description of surface pressure loads imposed by blast waves is crucial for the design next generation blast-resistant structures. However, experimental techniques non-intrusive, full-field measurements are not readily available. To address this challenge, a new application Virtual Fields Method (VFM) has been explored to reconstruct pressures acting on thin steel plates using defor...

Model Johnson-Holmquist is commonly used for simulation of brittle materials under impacts and blast loading. In this paper described its application to a model bolted connection in glass, when constant force applied, effect two mesh sizings compared.

Blast-induced traumatic brain injury has emerged as a "signature injury" in combat casualty care. Present combat helmets are designed primarily to protect against ballistic and blunt impacts, but the current issue with helmets is protection concerning blasts. In order to delineate the blast wave attenuating capability of the Advanced Combat Helmet (ACH), a finite element (FE) study was undertak...