Shock-wave and high strain-rate phenomena in matter: modeling and applications
type: CreativeWork
description: The understanding of the material response in case of high strain-rate, impact or shock loading is fundamental in several applications, such as e.g. ballistic, nuclear and military fields. The objective of the investigation of wave propagation in solids is the development of reliable methods for the prediction of dynamic events, such as high velocity or high energy impacts and detonation of explosives. In these events, usually, both high compression and expansion are involved and it is necessary to know physical, mechanical and thermodynamic properties of involved materials in wide ranges of densities, temperatures and deformations. The first chapter describes the problems correlated to shock regime and tries to collect the tools necessary to cope with the description of high dynamic regime. The concept of shock-wave phenomena is introduced and then the description of planar wave propagation in solid is reported. The analysis starts from the propagation of elastic wave and then extends to shock-wave propagation in fluids and solid. For each case presented, the corresponding numerical model is developed, aiming to highlight the main features of the investigated phenomenon. At the end of the first chapter, the propagation of cylindrical waves is also treated and the results are compared with the planar case. In the usual continuum mechanics treatment, the complete stress tensor, which describes the material condition state, is divided into two components: the deviatoric and the hydrostatic tensors. In high strain-rate and shock loading conditions, the choice of the material constitutive equations, which includes both strength model (deviatoric component) and equation of state (hydrodynamic component), is of fundamental importance: in chapter 2 the attention is focused on the hydrodynamic response, while in chapter 3 on the material strength. In impact, shock or generally high strain-rate regime, the material covers a wide range of different possible states. For exampl…
abstract: The understanding of the material response in case of high strain-rate, impact or shock loading is fundamental in several applications, such as e.g. ballistic, nuclear and military fields. The objective of the investigation of wave propagation in solids is the development of reliable methods for the prediction of dynamic events, such as high velocity or high energy impacts and detonation of explosives. In these events, usually, both high compression and expansion are involved and it is necessary to know physical, mechanical and thermodynamic properties of involved materials in wide ranges of densities, temperatures and deformations. The first chapter describes the problems correlated to shock regime and tries to collect the tools necessary to cope with the description of high dynamic regime. The concept of shock-wave phenomena is introduced and then the description of planar wave propagation in solid is reported. The analysis starts from the propagation of elastic wave and then extends to shock-wave propagation in fluids and solid. For each case presented, the corresponding numerical model is developed, aiming to highlight the main features of the investigated phenomenon. At the end of the first chapter, the propagation of cylindrical waves is also treated and the results are compared with the planar case. In the usual continuum mechanics treatment, the complete stress tensor, which describes the material condition state, is divided into two components: the deviatoric and the hydrostatic tensors. In high strain-rate and shock loading conditions, the choice of the material constitutive equations, which includes both strength model (deviatoric component) and equation of state (hydrodynamic component), is of fundamental importance: in chapter 2 the attention is focused on the hydrodynamic response, while in chapter 3 on the material strength. In impact, shock or generally high strain-rate regime, the material covers a wide range of different possible states. For exampl…
author: SCAPIN, MARTINA
language: eng
keywords: Shock-wave, high strain-rate, Equation of State, High energy deposition, Finite Element Modeling, Advanced material, CERN, Settore ING-IND/14 - Progettazione Meccanica e Costruzione di Macchine
date published: 2013
date modified: 2026-07-24T03:51:05Z
provider: Politecnico di Torino
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: Politecnico di Torino

PropertyValue
property ID: Handle
value: http://hdl.handle.net/11583/2507944

PropertyValue
property ID: DOI
value: 10.6092/polito/porto/2507944