Study on Dynamic Constitutive Model and Parameter Analysis of Ti/Ni Shape Memory Alloy Based on Irreversible Thermodynamics

Y. S. Yang, X. G. Zeng, J. Chen, Y. Guo, Y. Sheng

2018

Abstract

The dynamic constitutive model of Ti/Ni shape memory alloy based on irreversible thermodynamics theory was established by introducing two internal variables to characterize phase transformation and plastic deformation process. The evolution laws of phase transformation and plastic deformation were deduced respectively by assuming two generalized force associated with the corresponding internal variables.Latin Hypercube Sampling method is applied to sample among the whole parameter space for constitutive parameter of Ti/Ni alloy dynamic constitutive model based on irreversible thermodynamics theory, and Spearman rank correlation analysis of non-parameter statistics method is employed to conduct correlation analysis for random-input sample set of constitutive parameter and the output set of its corresponding objective function. A model is built to solve parameter sensitivity based on Spearman rank correlation coefficient, in order to achieve overall analysis of parameter sensitivity. According to results, numerical results, obtained with this method, are well consistent with experimental data. Furthermore, the optimal solution to the dynamic constitutive parameters can be realized with high efficiency, accuracy and reliability via the research method on parameter sensitivity analysis and identification put forward in this paper.

Paper Citation

in Harvard Style

Yang Y., Zeng X., Chen J., Guo Y. and Sheng Y. (2018). Study on Dynamic Constitutive Model and Parameter Analysis of Ti/Ni Shape Memory Alloy Based on Irreversible Thermodynamics.In Proceedings of the International Workshop on Materials, Chemistry and Engineering - Volume 1: IWMCE, ISBN 978-989-758-346-9, pages 100-106. DOI: 10.5220/0007435101000106

in Bibtex Style

@conference{iwmce18,
author={Y. S. Yang and X. G. Zeng and J. Chen and Y. Guo and Y. Sheng},
title={Study on Dynamic Constitutive Model and Parameter Analysis of Ti/Ni Shape Memory Alloy Based on Irreversible Thermodynamics},
booktitle={Proceedings of the International Workshop on Materials, Chemistry and Engineering - Volume 1: IWMCE,},
year={2018},
pages={100-106},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0007435101000106},
isbn={978-989-758-346-9},
}

in EndNote Style

TY - CONF

JO - Proceedings of the International Workshop on Materials, Chemistry and Engineering - Volume 1: IWMCE,
TI - Study on Dynamic Constitutive Model and Parameter Analysis of Ti/Ni Shape Memory Alloy Based on Irreversible Thermodynamics
SN - 978-989-758-346-9
AU - Yang Y.
AU - Zeng X.
AU - Chen J.
AU - Guo Y.
AU - Sheng Y.
PY - 2018
SP - 100
EP - 106
DO - 10.5220/0007435101000106