نتایج جستجو برای: blast loading

تعداد نتایج: 97959  

Journal: :International journal of engineering. Transactions B: Applications 2023

Piles transfer structural loads to the hard layers of soil or rock; thus, any damage pile foundations could have irreparable consequences. A surface blast can create a ground shock that transmits energy along and at depths. Explosion research necessitates technical design mitigate adverse effects on nearby structures facilities. The impact range safe distance which will avoid are two critical p...

Journal: :Engineering Structures 2021

This paper investigates the response of steel columns to combined pre-cursor thermal and long duration blast loads. Blast waves are primary damage mechanism from explosive events. However, events also emit Depending upon size standoff distance, effective load can reach a structure prior arrival blast. An structures such that total is different to, or greater than alone. There limited research d...

Journal: :Journal of neuroscience research 2015
Nicole E Zander Thuvan Piehler Mary E Boggs Rohan Banton Richard Benjamin

In a military setting, traumatic brain injury (TBI) is frequently caused by blast waves that can trigger a series of neuronal biochemical changes. Although many animal models have been used to study the effects of primary blast waves, elucidating the mechanisms of damage in a whole-animal model is extremely complex. In vitro models of primary blast, which allow for the deconvolution of mechanis...

2012
Vanessa Dawn Alphonse Joel D. Stitzel Andrew R. Kemper Pamela J. Vandevord Vanessa D. Alphonse Stephanie M. Beeman Jill A. Bisplinghoff Stefan M. Duma Craig McNally Steven Rowson Danielle M. Senge

The research presented in this thesis investigates eye injuries caused by blunt impacts and blast overpressure. This research represents part of an ongoing investigation to accurately quantify and predict eye injuries and injury mechanisms for various loading schemes. It has been shown that blunt trauma can cause severe eye injuries but it remains undecided whether blast overpressure alone can ...

Journal: :International Journal of Protective Structures 2022

Explosions increasingly occur in densely populated, urban locations. Primary blast injuries (PBIs), caused by exposure to wave overpressure, can be predicted using injury criteria, although many are based on idealised loading scenarios that do not necessarily reflect real life situations. At present, there is limited understanding of how, and what extent, blast-structure interaction influences ...

Journal: :Functional composites and structures 2023

Abstract Many engineering structures, especially defense applications, need to be reinforced against blast loads due a nearby explosion. Today, much more attention needs given this issue because of increased exposure explosions, and natural disasters. Different solutions have been used in the literature mitigate blast-loading effects. One these sandwich panels, are good candidate for applicatio...

2003
Armen Atoyan Charles D. Dermer

Acceleration of high-energy hadrons in GRB blast waves will be established if highenergy neutrinos are detected from GRBs. Recent calculations of photomeson neutrino production are reviewed, and new calculations of high-energy neutrinos and the accompanying hadronic cascade radiation are presented. If hadrons are injected in GRB blast waves with an energy corresponding to the measured hard X-ra...

2011
Mehdi S. Chafi Shailesh G. Ganpule Linxia Gu Namas Chandra Shailesh Ganpule

Blast wave induced a frequency spectrum and large deformation of the brain tissue. In this study, new material parameters for the brain material are determined from the experimental data pertaining to these large strain amplitudes and wide frequencies ranging (from 0.01 Hz to 10 MHz) using genetic algorithms. Both hyperelastic and viscoelastic behavior of the brain are implemented into 2D finit...

2007
RIYU WEI SHENG ZHANG WARNA KARUNASENA HONGWU ZHANG

The purpose of this paper is to investigate the application of a combined finite-discrete element program, such as ELFEN, for the simulation and prediction of backfill stope failure risks due to blast loading effects in underground mines. A real size of a backfilled stope blasted in the nearby rock of the paste fill is modelled. The dynamic fracture propagation and fragmentation in rock and the...

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