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contributor authorJing, Tong
contributor authorZang, Chaoping
contributor authorPetrov, Evgeny
date accessioned2025-04-21T10:29:38Z
date available2025-04-21T10:29:38Z
date copyright9/26/2024 12:00:00 AM
date issued2024
identifier issn0742-4795
identifier othergtp_147_02_021006.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4306307
description abstractThis paper develops an efficient method for calculations of stress levels, accumulation of high-cycle fatigue (HCF), and mistuning optimization aimed at the reduction of the fatigue damages for mistuned bladed disks under transient vibrations caused by variation of the rotation speed in the vicinity of resonance frequencies. The expressions for the sensitivities of the stress intensity at critical locations, and fatigue damage at loading cycles concerning the mistuning are derived analytically, providing high accuracy and speed of their evaluations. A gradient-based optimization method based on the sensitivities is applied to find the blade mistuning patterns, providing the minimum and maximum fatigue damage accumulated during gas-turbine acceleration or deceleration of a mistuned bladed disk for extending the service life. The method uses realistic large-scale finite element (FE) modeling for bladed disks, accounting for the varying damping and excitation loads with amplitude and frequency spectrum changing with rotation speed. The method has been implemented in a computer code. The fatigue accumulation caused by the transient vibration has been studied using a realistic bladed disk model. The gradient-based optimization search for mistuning patterns, providing the minimum and maximum fatigue damage accumulation during rotor acceleration is performed.
publisherThe American Society of Mechanical Engineers (ASME)
titleAnalysis and Optimization of the Fatigue Damage Accumulation Under Transient Vibrations of Mistuned Bladed Disks
typeJournal Paper
journal volume147
journal issue2
journal titleJournal of Engineering for Gas Turbines and Power
identifier doi10.1115/1.4066290
journal fristpage21006-1
journal lastpage21006-11
page11
treeJournal of Engineering for Gas Turbines and Power:;2024:;volume( 147 ):;issue: 002
contenttypeFulltext


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