TY - JOUR N2 - This paper is concerned with the 1st stage of HP rotor blade assembly steam turbine TK 120. The methodology was focused on the selection of mechanical properties and the way of the rotor disc modeling and estimating the degree of damage caused by creep. Then the dynamic interference between the frequencies of excitation and the natural frequencies was assessed. Static calculations were performed for the cyclic sectors consisting of the disc, disc blades, spacers and shrouding, including loads as temperature, mass forces from the angular velocity and the pressure on the blades. Then, the creep analysis using a Norton’s model and the modal analysis were performed. Static analysis gave information concerning the distributions of displacements, stress and strain components. In the creep analysis, the creep displacements and stress relaxation versus time were determined and the estimated degree of damage caused by creep was evaluated at each part of the rotor disc. In the modal analysis, the natural frequencies and modes of vibrations corresponding to the nodal diameters were found. The results of modal analysis were shown in the SAFE graph. Numerical calculations have shown that the rotor disc was a well-designed structure and did not reveal any dynamic interference. L1 - http://journals.pan.pl/Content/85112/PDF/ame-2016-0009.pdf L2 - http://journals.pan.pl/Content/85112 PY - 2016 IS - No 1 EP - 185 DO - 10.1515/meceng-2016-0009 KW - steam turbine KW - structural and cree analysis KW - modal analysis KW - FEM A1 - Borkowski, Paweł A1 - Głowacki, Dominik A1 - Zwoliński, Janisław A1 - Nowakowska, Agnieszka A1 - Pawlicki, Jakub PB - Polish Academy of Sciences, Committee on Machine Building VL - vol. 63 DA - 2016.04.20 T1 - Fe analysis of a steam turbine HP rotor blade stage concerning material effort, dynamic properties and creep damage assessment SP - 163 UR - http://journals.pan.pl/dlibra/publication/edition/85112 T2 - Archive of Mechanical Engineering ER -