In the framework of CDM, the evolution of the plastic strain, at which damage processes initiates, as a function of stress triaxiality, making the assumption of constant damage dissipated work is derived. Based on this, the CDM model proposed by Bonora (Eng. Frac. Mech., 58, 1-2, 1997) has been used to predict the occurrence of ductile failure at different stress triaxiality conditions, under both quasi-static and dynamic loading conditions. This solution allows the possibility to correctly predict the conditions for which ductile damage can initiate under uniaxial strain (such as that for the flyer plate impact test) and mixed conditions such as those in the Taylor impact test. The solution offers the possibility to correlate continuum damage model parameters to micro structural features such as grain size and purity grade

Damage development in high purity copper under varying dynamic conditions and microstructural states using continuum damage mechanics

BONORA, Nicola;RUGGIERO, Andrew;Iannitti G.
2009

Abstract

In the framework of CDM, the evolution of the plastic strain, at which damage processes initiates, as a function of stress triaxiality, making the assumption of constant damage dissipated work is derived. Based on this, the CDM model proposed by Bonora (Eng. Frac. Mech., 58, 1-2, 1997) has been used to predict the occurrence of ductile failure at different stress triaxiality conditions, under both quasi-static and dynamic loading conditions. This solution allows the possibility to correctly predict the conditions for which ductile damage can initiate under uniaxial strain (such as that for the flyer plate impact test) and mixed conditions such as those in the Taylor impact test. The solution offers the possibility to correlate continuum damage model parameters to micro structural features such as grain size and purity grade
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: http://hdl.handle.net/11580/21919
 Attenzione

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

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 9
social impact