Strength Analysis of Bearing Support in Heavy-Duty Gas Turbine

Aiming at the strength of the support in heavy gas turbine (HGT), a simplified method was proposed. The bearing house was regarded as a rigid body, and the supporting strut was moded by a fixed end beam. Based on the energy method and the deformation compatibility condition of the strut, the analytical formula was derived and verified by the finite element method (FEM). The results show that the analytical solution is consistent with the FEM results. The supporting strut is mainly affected by bending normal stress and axial tensile pressure, the shear stress is about 0.8% of the normal stress.