Evaluation of Viscoplastic Parameters of an Austenitic Stainless Steel at High Temperature

  • A. K. AsraffEmail author
  • Merin V. George
  • Krishnajith Jayamani
  • S. Sarath Chandran Nair
Conference paper
Part of the Lecture Notes in Mechanical Engineering book series (LNME)


Metals at high temperatures are sensitive to strain rate effects and exhibit viscoplastic behavior. The Perzyna model is one of the most widely used ones to study rate-dependent plasticity. This paper presents the details of calibration of Perzyna model parameters of an austenitic stainless steel from tension tests and calibration of Chaboche and Voce model parameters from low-cycle fatigue test at 1000 K. Tests are conducted in an INSTRON 8862 electromechanical UTM. Perzyna model parameters are validated by comparing tension test results with finite element simulations using ANSYS (Version 16.0) software. Sensitivity of Perzyna model parameters on viscoplastic behavior is investigated for monotonic as well as cyclic loading situations. Perzyna model is combined with the Chaboche–Voce cyclic plasticity model for investigating cyclic loading. Finally, viscoplastic cyclic stress analysis of a double-walled rocket engine thrust chamber is carried out using a combination of Perzyna, Chaboche and Voce models and its cyclic life evaluated.


ANSYS Chaboche model Voce model Perzyna model Stainless steel UTM Viscoplasticity 



The second author gratefully thanks Director, LPSC/ISRO, for granting permission to do her M. Tech thesis. Thanks are also due to Dr. R. Muthukumar, Deputy Director, MDA/LPSC, for permitting her to use the creep test facility and computational resources of SDAG for this work.


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Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  • A. K. Asraff
    • 1
    Email author
  • Merin V. George
    • 2
  • Krishnajith Jayamani
    • 1
  • S. Sarath Chandran Nair
    • 1
  1. 1.Structural Dynamics & Analysis Group, Liquid Propulsion Systems CentreISROTrivandrumIndia
  2. 2.Department of Civil EngineeringMar Athanasius College of EngineeringKothamangalam, ErnakulamIndia

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