Dynamic materials testing and constitutive modeling of structural sheet steel for automotive applications. Final progress report

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Description

The objective of this study was to characterize the dynamic mechanical properties of four different structural sheet steels used in automobile manufacture. The analysis of a drawing quality, special killed (DQSK) mild steel; high strength, low alloy (HSLA) steel; interstitial free (IF); and a high strength steel (M-190) have been completed. In addition to the true stress-true strain data, coefficients for the Johnson-Cook, Zerilli-Armstrong, and Mechanical Threshold Stress constitutive models have been determined from the mechanical test results at various strain rates and temperatures and are summarized. Compression, tensile, and biaxial bulge tests and low (below 0.1/s) strain rate tests ... continued below

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51 p.

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Cady, C.M.; Chen, S.R. & Gray, G.T. III August 23, 1996.

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Description

The objective of this study was to characterize the dynamic mechanical properties of four different structural sheet steels used in automobile manufacture. The analysis of a drawing quality, special killed (DQSK) mild steel; high strength, low alloy (HSLA) steel; interstitial free (IF); and a high strength steel (M-190) have been completed. In addition to the true stress-true strain data, coefficients for the Johnson-Cook, Zerilli-Armstrong, and Mechanical Threshold Stress constitutive models have been determined from the mechanical test results at various strain rates and temperatures and are summarized. Compression, tensile, and biaxial bulge tests and low (below 0.1/s) strain rate tests were completed for all four steels. From these test results it was determined to proceed with the material modeling optimization using the through thickness compression results. Compression tests at higher strain rates and temperatures were also conducted and analyzed for all the steels. Constitutive model fits were generated from the experimental data. This report provides a compilation of information generated from mechanical tests, the fitting parameters for each of the constitutive models, and an index and description of data files.

Physical Description

51 p.

Notes

OSTI as DE97000294

Source

  • Other Information: PBD: 23 Aug 1996

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  • Other: DE97000294
  • Report No.: LA-UR--96-3243
  • Grant Number: W-7405-ENG-36
  • DOI: 10.2172/380343 | External Link
  • Office of Scientific & Technical Information Report Number: 380343
  • Archival Resource Key: ark:/67531/metadc674820

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  • August 23, 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • Feb. 29, 2016, 2:11 p.m.

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Cady, C.M.; Chen, S.R. & Gray, G.T. III. Dynamic materials testing and constitutive modeling of structural sheet steel for automotive applications. Final progress report, report, August 23, 1996; New Mexico. (digital.library.unt.edu/ark:/67531/metadc674820/: accessed December 13, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.