Development of a meta-model dependent on ambient temperature and turbine operating time, enabling the estimation of creep strength utilization and the prediction of service intervals.
A rotationally symmetric 2D rotor model was used to perform steady-state thermal and structural analyses under various ambient conditions. Creep strain, stress, and deformation were evaluated across multiple scenarios. A mathematical meta-model was developed and subsequently verified. The were performed using Ansys APDL with a user-defined creep law.
Fracture mechanics eanalysesvaluations of the compressor disks were conducted based on finite element analyses, considering load ramps during gas turbine operation.
- Axisymmetric 2D rotor model
- Steady-state thermal and structural analyses for multiple ambient conditions
- Evaluation of creep strain, stress, and deformation across operating scenarios
- Development and verification of a mathematical meta-model dependent on ambient temperature and turbine operating time
- Fracture mechanics assessment of compressor disks
- Tools: Ansys APDL with user-defined creep law; fracture mechanics with IWM VERB
Fabrika Brendov