The paper presents a method for measuring and modeling residual stress fields. The method is based on the evaluation of a hydrostatic initial strain distribution. which is assumed to be the cause of the residual stresses. The initial strain distribution can be used, within a numerical (e.g., finite element) model, to evaluate the complete residual stress distribution of the body. For estimating the initial strain distribution a hybrid (experimental plus numerical) technique is proposed, which is based on measuring the strain relaxed by cutting the body in incremental steps and on sensitivity coefficients obtained by properly elaborating numerical simulations. The numerical and experimental methodologies are presented along with a general discussion of the rational way to be applied in practice.

Residual stress measurement and modeling by the initial strain distribution method: Part I - Theory

BEGHINI, MARCO;BERTINI, LEONARDO
2004

Abstract

The paper presents a method for measuring and modeling residual stress fields. The method is based on the evaluation of a hydrostatic initial strain distribution. which is assumed to be the cause of the residual stresses. The initial strain distribution can be used, within a numerical (e.g., finite element) model, to evaluate the complete residual stress distribution of the body. For estimating the initial strain distribution a hybrid (experimental plus numerical) technique is proposed, which is based on measuring the strain relaxed by cutting the body in incremental steps and on sensitivity coefficients obtained by properly elaborating numerical simulations. The numerical and experimental methodologies are presented along with a general discussion of the rational way to be applied in practice.
Beghini, Marco; Bertini, Leonardo
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/11568/203370
 Attenzione

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

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 8
  • ???jsp.display-item.citation.isi??? 6
social impact