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contributor authorXie, Wenzhen
contributor authorLiu, Chao
contributor authorHuang, Gancai
contributor authorJiang, Dongxiang
date accessioned2022-05-08T09:21:35Z
date available2022-05-08T09:21:35Z
date copyright3/11/2022 12:00:00 AM
date issued2022
identifier issn0742-4795
identifier othergtp_144_06_064501.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4285038
description abstractRod-fastened rotor is the core rotating section of the heavy-duty gas turbine. To accurately analyze its dynamic characteristics, the contact model for the disk contact interface needs to be defined and established. Traditional statistical contact models, including the elastic model and elastoplastic model, cannot describe microscopic atomic behavior during the contact process of asperities, while the microscopic contact behavior of the asperities is one of the main factors in affecting the contact stiffness of the rough surface. In this work, the molecular dynamics simulation of the microscopic contact behavior of the rough surface is carried out and the semi-analytical model is built upon that. The semi-analytical model is later combined with the Timoshenko beam element in modeling the rotor system. The influence of plasticity index and surface roughness on the contact model and dynamic characteristics of the rotor is analyzed. Moreover, the experimental tests of natural frequencies and mode shapes are carried out. The results show that the proposed semi-analytical contact model is effective and more accurate compared to other elastic and elastic-plastic contact models.
publisherThe American Society of Mechanical Engineers (ASME)
titleNumerical and Experimental Study on Rod-Fastened Rotor Dynamics Using Semi-Analytical Elastic-Plastic Model
typeJournal Paper
journal volume144
journal issue6
journal titleJournal of Engineering for Gas Turbines and Power
identifier doi10.1115/1.4053780
journal fristpage64501-1
journal lastpage64501-11
page11
treeJournal of Engineering for Gas Turbines and Power:;2022:;volume( 144 ):;issue: 006
contenttypeFulltext


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