ENERGY-BASED METHOD FOR GAS TURBINE ENGINE DISK BURST SPEED CALCULATION

摘要

FE modeling of burst speed tests of gas turbine engine (GTE) disks using stress-strain properties confirmed by tensile tests of specimen was carried out. Stress strain state (SSS) of disk during loading was determined using the MSC. Software and ANSYS commercial FE method software. Incremental theory of plasticity with isotropic hardening was used to determine the distribution of plastic strains of disks during loading. It was shown a strong sensitivity of the burst speed to the choice of the yield function. Burst speed test results of various disk configurations and thermo-mechanical loadings were compared with three-dimensional elastic-plastic FEM analysis results using energy-based fracture criteria.