Effects of Damping and Varying Contact Area at Blade-Disk Joints in Forced Response Analysis of Bladed Disk Assemblies
作者： E. P. Petrov , D. J. Ewins
DOI: 10.1115/1.2181998
关键词: Finite element method 、 Contact area 、 Nonlinear system 、 Engineering 、 Blade (geometry) 、 Response analysis 、 Normal load 、 Structural engineering
摘要: An approach is developed to analyze the multiharmonic forced response of large-scale finite element models bladed disks taking account nonlinear forces acting at contact interfaces blade roots. Area interaction modeled by area friction elements which allow for stresses under variable normal load, unilateral contacts, clearances, and interferences. Examples application new analysis root damping levels are given numerical investigations effects conditions joints excitation explored practical disks.
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