JOHNSON COOK CONSTITUTIVE MODELING FOR AUSTENITE METAL IN HOT FORMING PROCESS

Authors

  • Azman Senin Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia
  • Zulkifli Mohd Nopiah Unit of Fundamental Engineering Studies, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia
  • Ahmad Kamal Ariffin Mohd. Ihsan Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia
  • Shahrum Abdullah Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia
  • Dzuraidah Abd Wahab Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia
  • Muhammad Jamhuri Jamaludin Institute of Product Design and Manufacturing, Universiti Kuala Lumpur, 56100 Kuala Lumpur, Malaysia
  • Ahmad Zakaria Institute of Product Design and Manufacturing, Universiti Kuala Lumpur, 56100 Kuala Lumpur, Malaysia

DOI:

https://doi.org/10.11113/jt.v78.9191

Keywords:

Johnson cook constitutive model, flow curve, embedded material model, material stress, hot stamping

Abstract

Numerical computations have helped process engineers in designing the stamping process with minimal process defects. The constitutive modelling for hot stamping represents a complex relationship between stress, strain, strain rate and process temperature. The sheet thickness is 1.5 mm were prepared according to the ASTM standard. The flow curve properties of NPH-1500 sheet were investigated by conducting uniaxial tension tests with temperature from 600oC to 800oC and subjected to strain rate of 0.1/s,1/s and 10/s. The flow curves for the respective experiment runs were investigated and modelled with Johnson Cook constitutive modelling where the important metal parameters were derived. Based on the results, the error of the metal parameters values from experimental works and commercial database was found to be less than 5%.

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Published

2016-06-23

Issue

Vol. 78 No. 6-10: Advances in Research on Automotive Technology Vol. 2

Section

Science and Engineering

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Copyright of articles that appear in Jurnal Teknologi belongs exclusively to Penerbit Universiti Teknologi Malaysia (Penerbit UTM Press). This copyright covers the rights to reproduce the article, including reprints, electronic reproductions, or any other reproductions of similar nature.

How to Cite

JOHNSON COOK CONSTITUTIVE MODELING FOR AUSTENITE METAL IN HOT FORMING PROCESS. (2016). Jurnal Teknologi, 78(6-10). https://doi.org/10.11113/jt.v78.9191