Development of a fracture criterion for cold heading

Nick Nickoletopoulos, Michel Hone, Priti Wanjara, Yves Verreman, James Nemes, J. J. Jonas, Steve Yue

Research output: Contribution to journalConference article

Abstract

In order to have accurately numerical simulations of the cold heading process, it is imperative to define a fracture criterion that is appropriate for the conditions actually encountered during cold heading. The Dynamic Drop Weight Test (DDWT) machine uses a falling weight to apply a compressive load to a workpiece. It is capable of generating strain rates comparable to those of cold heading, which cannot be attained by servo-hydraulic machines. The DDWT may be used to determine the compressive stress-strain behavior and fracture strength. In addition, the test can be used in the development of a fracture criterion for input into finite element models of cold heading operations.

Original languageEnglish (US)
Pages (from-to)65-74
Number of pages10
JournalProceedings of the Annual Convention of the Wire Association International
StatePublished - Dec 3 2000

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

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    Nickoletopoulos, N., Hone, M., Wanjara, P., Verreman, Y., Nemes, J., Jonas, J. J., & Yue, S. (2000). Development of a fracture criterion for cold heading. Proceedings of the Annual Convention of the Wire Association International, 65-74.