Determination of material parameters in the chaboche unified viscoplasticty model
An experimental programme of cyclic mechanical testing of a 316 stainless steel, at temperatures up to 600°C, under isothermal conditions, for the identification of material constitutive constants, has been carried out using a thermo-mechanical fatigue (TMF) test machine with induction coil heating....
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Published: |
Trans Tech Publications
2009
|
| Subjects: | |
| Online Access: | https://eprints.nottingham.ac.uk/46521/ |
| _version_ | 1848797346753675264 |
|---|---|
| author | Gong, Y.P. Hyde, Christopher J. Sun, Wei Hyde, T.H. |
| author_facet | Gong, Y.P. Hyde, Christopher J. Sun, Wei Hyde, T.H. |
| author_sort | Gong, Y.P. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | An experimental programme of cyclic mechanical testing of a 316 stainless steel, at temperatures up to 600°C, under isothermal conditions, for the identification of material constitutive constants, has been carried out using a thermo-mechanical fatigue (TMF) test machine with induction coil heating. The constitutive model adopted is a modified Chaboche unified viscoplasticity model, which can deal with both cyclic effects, such as combined isotropic and kinematic hardening, and rate-dependent effects, associated with viscoplasticity. The characterisation of 316 stainless steel is presented and compared to results from cyclic isothermal tests. A least squares optimisation algorithm has been developed and implemented for determining the material constants in order to further improve the general fit of the model to experimental data, using the initially obtained material constants as the starting point in this optimisation process. The model predictions using both the initial and optimised material constants are compared to experimental data. |
| first_indexed | 2025-11-14T20:02:25Z |
| format | Article |
| id | nottingham-46521 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T20:02:25Z |
| publishDate | 2009 |
| publisher | Trans Tech Publications |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-465212020-05-04T16:28:40Z https://eprints.nottingham.ac.uk/46521/ Determination of material parameters in the chaboche unified viscoplasticty model Gong, Y.P. Hyde, Christopher J. Sun, Wei Hyde, T.H. An experimental programme of cyclic mechanical testing of a 316 stainless steel, at temperatures up to 600°C, under isothermal conditions, for the identification of material constitutive constants, has been carried out using a thermo-mechanical fatigue (TMF) test machine with induction coil heating. The constitutive model adopted is a modified Chaboche unified viscoplasticity model, which can deal with both cyclic effects, such as combined isotropic and kinematic hardening, and rate-dependent effects, associated with viscoplasticity. The characterisation of 316 stainless steel is presented and compared to results from cyclic isothermal tests. A least squares optimisation algorithm has been developed and implemented for determining the material constants in order to further improve the general fit of the model to experimental data, using the initially obtained material constants as the starting point in this optimisation process. The model predictions using both the initial and optimised material constants are compared to experimental data. Trans Tech Publications 2009-10-12 Article PeerReviewed Gong, Y.P., Hyde, Christopher J., Sun, Wei and Hyde, T.H. (2009) Determination of material parameters in the chaboche unified viscoplasticty model. Applied Mechanics and Materials, 16-19 . pp. 955-959. ISSN 1662-7482 Unified viscoplasticity model 316 stainless steel Material property determination Nonlinear least squares optimisation https://doi.org/10.4028/www.scientific.net/AMM.16-19.955 doi:10.4028/www.scientific.net/AMM.16-19.955 doi:10.4028/www.scientific.net/AMM.16-19.955 |
| spellingShingle | Unified viscoplasticity model 316 stainless steel Material property determination Nonlinear least squares optimisation Gong, Y.P. Hyde, Christopher J. Sun, Wei Hyde, T.H. Determination of material parameters in the chaboche unified viscoplasticty model |
| title | Determination of material parameters in the chaboche unified viscoplasticty model |
| title_full | Determination of material parameters in the chaboche unified viscoplasticty model |
| title_fullStr | Determination of material parameters in the chaboche unified viscoplasticty model |
| title_full_unstemmed | Determination of material parameters in the chaboche unified viscoplasticty model |
| title_short | Determination of material parameters in the chaboche unified viscoplasticty model |
| title_sort | determination of material parameters in the chaboche unified viscoplasticty model |
| topic | Unified viscoplasticity model 316 stainless steel Material property determination Nonlinear least squares optimisation |
| url | https://eprints.nottingham.ac.uk/46521/ https://eprints.nottingham.ac.uk/46521/ https://eprints.nottingham.ac.uk/46521/ |