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Date of download: 5/31/2016 Copyright © ASME. All rights reserved. From: Finite-Element Analysis of Waspaloy Using Sinh Creep-Damage Constitutive Model.

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Presentation on theme: "Date of download: 5/31/2016 Copyright © ASME. All rights reserved. From: Finite-Element Analysis of Waspaloy Using Sinh Creep-Damage Constitutive Model."— Presentation transcript:

1 Date of download: 5/31/2016 Copyright © ASME. All rights reserved. From: Finite-Element Analysis of Waspaloy Using Sinh Creep-Damage Constitutive Model Under Triaxial Stress State J. Pressure Vessel Technol. 2016;138(3):031408-031408-9. doi:10.1115/1.4032704 Bridgman notched specimen Figure Legend:

2 Date of download: 5/31/2016 Copyright © ASME. All rights reserved. From: Finite-Element Analysis of Waspaloy Using Sinh Creep-Damage Constitutive Model Under Triaxial Stress State J. Pressure Vessel Technol. 2016;138(3):031408-031408-9. doi:10.1115/1.4032704 Minimum creep strain rate using the Norton power (KR) and McVetty (Sinh) law of Waspaloy at 700 °C (log scale) Figure Legend:

3 Date of download: 5/31/2016 Copyright © ASME. All rights reserved. From: Finite-Element Analysis of Waspaloy Using Sinh Creep-Damage Constitutive Model Under Triaxial Stress State J. Pressure Vessel Technol. 2016;138(3):031408-031408-9. doi:10.1115/1.4032704 Sinh and KR model rupture life fitting of Waspaloy at 700 °C (log scale) Figure Legend:

4 Date of download: 5/31/2016 Copyright © ASME. All rights reserved. From: Finite-Element Analysis of Waspaloy Using Sinh Creep-Damage Constitutive Model Under Triaxial Stress State J. Pressure Vessel Technol. 2016;138(3):031408-031408-9. doi:10.1115/1.4032704 Sinh model analytical damage and prediction curve of Waspaloy at 700 °C Figure Legend:

5 Date of download: 5/31/2016 Copyright © ASME. All rights reserved. From: Finite-Element Analysis of Waspaloy Using Sinh Creep-Damage Constitutive Model Under Triaxial Stress State J. Pressure Vessel Technol. 2016;138(3):031408-031408-9. doi:10.1115/1.4032704 KR model analytical damage and prediction curve of Waspaloy at 700 °C Figure Legend:

6 Date of download: 5/31/2016 Copyright © ASME. All rights reserved. From: Finite-Element Analysis of Waspaloy Using Sinh Creep-Damage Constitutive Model Under Triaxial Stress State J. Pressure Vessel Technol. 2016;138(3):031408-031408-9. doi:10.1115/1.4032704 Eight-node single element with boundary constraint Figure Legend:

7 Date of download: 5/31/2016 Copyright © ASME. All rights reserved. From: Finite-Element Analysis of Waspaloy Using Sinh Creep-Damage Constitutive Model Under Triaxial Stress State J. Pressure Vessel Technol. 2016;138(3):031408-031408-9. doi:10.1115/1.4032704 Creep deformation of the KR and Sinh model of Waspaloy at 700 °C. Note that at experimental rupture life, the KR damage is way below unity. KR rupture life predictions are highly inaccurate. Figure Legend:

8 Date of download: 5/31/2016 Copyright © ASME. All rights reserved. From: Finite-Element Analysis of Waspaloy Using Sinh Creep-Damage Constitutive Model Under Triaxial Stress State J. Pressure Vessel Technol. 2016;138(3):031408-031408-9. doi:10.1115/1.4032704 KR model damage is below unity at 100% strain deformation Figure Legend:

9 Date of download: 5/31/2016 Copyright © ASME. All rights reserved. From: Finite-Element Analysis of Waspaloy Using Sinh Creep-Damage Constitutive Model Under Triaxial Stress State J. Pressure Vessel Technol. 2016;138(3):031408-031408-9. doi:10.1115/1.4032704 ANSYS FEM mesh Figure Legend:

10 Date of download: 5/31/2016 Copyright © ASME. All rights reserved. From: Finite-Element Analysis of Waspaloy Using Sinh Creep-Damage Constitutive Model Under Triaxial Stress State J. Pressure Vessel Technol. 2016;138(3):031408-031408-9. doi:10.1115/1.4032704 Sinh damage at 250 MPa and 700 °C: (a) 50 hrs, (b) 200 hrs, (c) 400 hrs, (d) 600 hrs, (e) 700 hrs, and (f) 832 hrs Figure Legend:

11 Date of download: 5/31/2016 Copyright © ASME. All rights reserved. From: Finite-Element Analysis of Waspaloy Using Sinh Creep-Damage Constitutive Model Under Triaxial Stress State J. Pressure Vessel Technol. 2016;138(3):031408-031408-9. doi:10.1115/1.4032704 Notch-strengthening effect of Sinh model at different alpha Figure Legend:


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