Characterization of Strength and Fracture Properties of S355-J2 Steel

Authors:

  • Geng Sheng Wang

Publish date: 2017-12-07

Report number: FOI-R--4470--SE

Pages: 56

Written in: English

Keywords:

  • Strength and fracture test
  • Johnson Cook
  • Modified Mohr-Coulomb
  • Xiu- Wierzbicki
  • S355-J2
  • numerical simulations

Abstract

To address the need for advanced material models in numerical simulations involving high velocity impact and penetration, a study of the test methodology and characterization of advanced material models is performed. In this work, a new test method is developed that utilizes the multi-axial testing capability and the up to date simulation algorithm to determine material parameters for advanced material models based on a limited number of tests. A hollow notched specimen design is developed for the axial and torque testing machines to cover a significant range of stress triaxiality and Lode parameter for the important locations in the fracture locus. It is shown that the design greatly reduces the number of test required and provide a cost effective solution to determine parameters for various advanced material models. Together with the development of the test method, various advanced material models are reviewed and analysed for their advantages and shortcomings. From this study, several advanced strength and fracture models for S355-J2 steel are determined for three different material conditions.