Skip to main content

LUP Student Papers

LUND UNIVERSITY LIBRARIES

Correlation of numerical simulation methods and failure criteria to experimental burst test

Kasljevic, Karlo LU (2020) In ISRN LUTFD2/TFHF-20/5237-SE(1-46) FHLM01 20201
Department of Construction Sciences
Solid Mechanics
Abstract
Predicting the burst speed of turbine rotors is a costly and challenging task. Therefore, the scope of this thesis is to perform a correlation study between numerical simulation methods and failure criteria to experimental over-speed burst test of the Prometheus turbine rotor. The rotor was manufactured using selective laser melting, and GKN Aerospace performed the over speed burst test, which is the foundation of the project. ANSYS Mechanical 19.1 was used to perform structural linear elastic and elastoplastic analysis. Two Hockett Sherby hardening models and linear interpolation of raw hardening data were applied to compute the elasto-plastic analysis. The simulation results were used to calculate several burst margins yielding promising... (More)
Predicting the burst speed of turbine rotors is a costly and challenging task. Therefore, the scope of this thesis is to perform a correlation study between numerical simulation methods and failure criteria to experimental over-speed burst test of the Prometheus turbine rotor. The rotor was manufactured using selective laser melting, and GKN Aerospace performed the over speed burst test, which is the foundation of the project. ANSYS Mechanical 19.1 was used to perform structural linear elastic and elastoplastic analysis. Two Hockett Sherby hardening models and linear interpolation of raw hardening data were applied to compute the elasto-plastic analysis. The simulation results were used to calculate several burst margins yielding promising results, with the lowest error margin being approximately 1%. Furthermore, elasto-plastic results proved to be the most accurate for estimating the burst speed, with an error margin of approximately 0.2%. Finally, predicting the location where the fracture is most likely to occur was done by applying the Rice & Tracey criteria, which gave promising results. (Less)
Popular Abstract
During lift off, the Prometheus rocket turbine components experience tremendous structural loads were failure could lead to catastrophic downfall. Therefore, the components undergo several costly tests ensuring their reliability. To reduce development costs, simulations are performed to estimate the limitations of these components. The accuracy of these simulations are crucial and requires validation by correlating the results to real-life experimental testing.
Please use this url to cite or link to this publication:
author
Kasljevic, Karlo LU
supervisor
organization
course
FHLM01 20201
year
type
H3 - Professional qualifications (4 Years - )
subject
keywords
Gas, Rotor, Turbine, Overspeed, Burst, Test, Strength, Analysis, Failure, Criteria, Burst margin, Stress analysis, Finite element method, Rotating disc, Burst Strength, Turbine disc, turbo-engine disk, Fracture, Blisk, Correlation study
publication/series
ISRN LUTFD2/TFHF-20/5237-SE(1-46)
report number
TFHF-5237
language
English
id
9025760
date added to LUP
2020-08-12 11:57:41
date last changed
2020-08-12 11:57:41
@misc{9025760,
  abstract     = {{Predicting the burst speed of turbine rotors is a costly and challenging task. Therefore, the scope of this thesis is to perform a correlation study between numerical simulation methods and failure criteria to experimental over-speed burst test of the Prometheus turbine rotor. The rotor was manufactured using selective laser melting, and GKN Aerospace performed the over speed burst test, which is the foundation of the project. ANSYS Mechanical 19.1 was used to perform structural linear elastic and elastoplastic analysis. Two Hockett Sherby hardening models and linear interpolation of raw hardening data were applied to compute the elasto-plastic analysis. The simulation results were used to calculate several burst margins yielding promising results, with the lowest error margin being approximately 1%. Furthermore, elasto-plastic results proved to be the most accurate for estimating the burst speed, with an error margin of approximately 0.2%. Finally, predicting the location where the fracture is most likely to occur was done by applying the Rice & Tracey criteria, which gave promising results.}},
  author       = {{Kasljevic, Karlo}},
  language     = {{eng}},
  note         = {{Student Paper}},
  series       = {{ISRN LUTFD2/TFHF-20/5237-SE(1-46)}},
  title        = {{Correlation of numerical simulation methods and failure criteria to experimental burst test}},
  year         = {{2020}},
}