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Determination of the Uniaxial Stress–Strain Relations of Ductile Materials by Small Disk Specimens

Determination of the Uniaxial Stress–Strain Relations of Ductile Materials by Small Disk Specimens In this work, the small lateral-compression testing based on energy equivalent (SLT-EE) method is put forward to determine the stress–strain curves of materials utilizing small disk specimens. Numerical simulations of small lateral-compression testing with imaginary materials are conducted to examine the validity of the SLT-EE method. The results demonstrate that the stress–strain curves determined by the SLT-EE method coincide with the curves input by finite element analysis. In order to predict the stress–strain curves of materials with different dimensions, a modified SLT-EE method is successfully proposed by introducing a correction factor f. Finally, the small disk compression experiments of Q345B, 304, 7075 and 6061 are performed. The stress–strain curves of the four materials predicted by the SLT-EE method show agreement with the tension results. Furthermore, the mechanical properties of in-service hollow components are also determined utilizing the same method successfully. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png "Acta Mechanica Solida Sinica" Springer Journals

Determination of the Uniaxial Stress–Strain Relations of Ductile Materials by Small Disk Specimens

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Publisher
Springer Journals
Copyright
Copyright © The Chinese Society of Theoretical and Applied Mechanics 2020
ISSN
0894-9166
eISSN
1860-2134
DOI
10.1007/s10338-020-00205-9
Publisher site
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Abstract

In this work, the small lateral-compression testing based on energy equivalent (SLT-EE) method is put forward to determine the stress–strain curves of materials utilizing small disk specimens. Numerical simulations of small lateral-compression testing with imaginary materials are conducted to examine the validity of the SLT-EE method. The results demonstrate that the stress–strain curves determined by the SLT-EE method coincide with the curves input by finite element analysis. In order to predict the stress–strain curves of materials with different dimensions, a modified SLT-EE method is successfully proposed by introducing a correction factor f. Finally, the small disk compression experiments of Q345B, 304, 7075 and 6061 are performed. The stress–strain curves of the four materials predicted by the SLT-EE method show agreement with the tension results. Furthermore, the mechanical properties of in-service hollow components are also determined utilizing the same method successfully.

Journal

"Acta Mechanica Solida Sinica" – Springer Journals

Published: Nov 21, 2020

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