Numerical simulations of flying plate impact test usually show discrepancies between the calculated and observed velocity vs time plot under spalling conditions. Very often these differences are ascribed either to the constitutive model or to the numerical scheme. In this paper it is shown that, at least in the case of ductile metals, these differences can be the understood as the presence of a dissipation process during fracturing due to the viscous separation of spall fracture plane surfaces. An advanced CDM model for ductile metals has been used in order to simulate soft spall in metals and standard fracture mechanics concepts have been used to estimate the fracture energy dissipated during the separation of the fracture surfaces

Fracture Energy Effect On Spall Signal

BONORA, Nicola;RUGGIERO, Andrew;
2003-01-01

Abstract

Numerical simulations of flying plate impact test usually show discrepancies between the calculated and observed velocity vs time plot under spalling conditions. Very often these differences are ascribed either to the constitutive model or to the numerical scheme. In this paper it is shown that, at least in the case of ductile metals, these differences can be the understood as the presence of a dissipation process during fracturing due to the viscous separation of spall fracture plane surfaces. An advanced CDM model for ductile metals has been used in order to simulate soft spall in metals and standard fracture mechanics concepts have been used to estimate the fracture energy dissipated during the separation of the fracture surfaces
2003
0735401810
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11580/11625
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
social impact