Publication detail

Computational simulation of cold forming of bolts and prediction of material damage during the process

PETRUŠKA, J., SKALKA, P., JANÍČEK, L., RUSZ, S.

Original Title

Computational simulation of cold forming of bolts and prediction of material damage during the process

English Title

Computational simulation of cold forming of bolts and prediction of material damage during the process

Type

conference paper

Language

en

Original Abstract

The paper deals with application of selected criteria of ductile fracture to prediction of material damage during the production of bolts by cold forming. Two basic steps of this procedure are described. First, the fracture criteria para- meters are identi ed by numerical simulation of realized material fracture tests in compression. Second, two main stages of the bolt production (forward extru- sion of shaft and compression of head) are computationally simulated as a large displacement, elasto-plastic problem. The computed history of stress and strain is then used for evaluation of the fracture criteria and compared with the identi- ed limit fracture values of the material. A number of geometrical versions are analysed to evaluate the in uence of shape on the probability of fracture.

English abstract

The paper deals with application of selected criteria of ductile fracture to prediction of material damage during the production of bolts by cold forming. Two basic steps of this procedure are described. First, the fracture criteria para- meters are identi ed by numerical simulation of realized material fracture tests in compression. Second, two main stages of the bolt production (forward extru- sion of shaft and compression of head) are computationally simulated as a large displacement, elasto-plastic problem. The computed history of stress and strain is then used for evaluation of the fracture criteria and compared with the identi- ed limit fracture values of the material. A number of geometrical versions are analysed to evaluate the in uence of shape on the probability of fracture.

RIV year

2004

Released

10.05.2004

Publisher

Ústav termomechaniky AV ČR

Location

Svratka

ISBN

80-85918-88-9

Book

Engineering mechanics 2004

Pages from

235

Pages to

241

Pages count

7

BibTex


@inproceedings{BUT17029,
  author="Jindřich {Petruška} and Petr {Skalka} and Libor {Janíček} and Stanislav {Rusz}",
  title="Computational simulation of cold forming of bolts and prediction of material damage during the process",
  annote="The paper deals with application of selected criteria of ductile fracture
to prediction of material damage during the production of bolts by cold forming.
Two basic steps of this procedure are described. First, the fracture criteria para-
meters are identied by numerical simulation of realized material fracture tests
in compression. Second, two main stages of the bolt production (forward extru-
sion of shaft and compression of head) are computationally simulated as a large
displacement, elasto-plastic problem. The computed history of stress and strain
is then used for evaluation of the fracture criteria and compared with the identi-
ed limit fracture values of the material. A number of geometrical versions are
analysed to evaluate the in
uence of shape on the probability of fracture.
",
  address="Ústav termomechaniky AV ČR",
  booktitle="Engineering mechanics 2004",
  chapter="17029",
  institution="Ústav termomechaniky AV ČR",
  year="2004",
  month="may",
  pages="235",
  publisher="Ústav termomechaniky AV ČR",
  type="conference paper"
}