Electrical generator analyses
In the area of the power machinery analysis, we have many years of experience in numerical FEM modeling of electrical generators and their components. We perform finite element analyses (FEA) of rotor as well as stator parts of the generators between 150 MW and 2500 MW. For these components, we focus on evaluation of the static strength, fatigue life as well as the crack propagation resistance. Based on the performed calculations we propose design modifications in order to fulfil the code requirements and/or meet the customer needs.
Nuclear component analyses
Another important branch of our activity in the power machinery area is analysis of components for nuclear power plants. We perform ASME Code qualification for the parts of the primary loop pressure vessels and other components. Our calculations include evaluation of the static strength and more importantly evaluation of the fatigue life where the components are qualified for 60 years of operation. We participate on development and qualification of the Westinghouse AP1000 nuclear power plant.
We are also engaged in the area of analysis of turbomachinery. In this branch, we provide thermo-mechanical analyses of different parts as well as entire assemblies. Our calculations are focused on the temperature distribution and subsequently on the thermo-mechanical loading of the turbine housings, turbine wheels, compressor and bearing housings. These calculations are followed by estimation of the operational life (low cycle – thermo-mechanical fatigue). We also perform evaluations of deformations in order to ensure no leakage, bolted connection evaluations, vibration analyses, etc.
As other examples in the area of the power machinery, we can mention thermal-stress analysis of the combustion boiler part, thermal analysis of the hot ashes cooling, and stress analysis of the fuel tank for the diesel generator.