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RISVibration Confinement Phenomena in Disordered, Mono-Coupled, Multi-Span Beams
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The effects of small, periodicity-destroying irregularities on the dynamics of multi-span beams are examined. It is shown that minute deviations of the span lengths from an ideal value alter ...
Localization Phenomena in Mistuned Assemblies with Cyclic Symmetry Part II: Forced Vibrations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The effects of disorder on the forced response of nearly periodic structures with cyclic symmetry are investigated. The force model adopted here is relevant to blade assemblies. Perturbation ...
Localization Phenomena in Mistuned Assemblies with Cyclic Symmetry Part I: Free Vibrations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An investigation of the effects of small structural irregularities on the dynamics of nearly periodic structures with cyclic symmetry is presented. The system studied may be regarded as a simple ...
A Study of Dynamic Instability of Plates by an Extended Incremental Harmonic Balance Method
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The dynamic instability of plates is investigated with geometric nonlinearities being included in the model, which allows one to determine the amplitude of the parametric vibrations. A modal ...
A Reduced Order Modeling Technique for Mistuned Bladed Disks
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The analysis of the response statistics of mistuned turbomachinery rotors requires an expensive Monte Carlo simulation approach. Simple lumped parameter models capture basic localization effects ...
Numerical Investigation of Abradable Coating Removal in Aircraft Engines Through Plastic Constitutive Law
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In the field of turbomachines, better engine performances are achieved by reducing possible parasitic leakage flows through the closure of the clearance distance between blade tips and surrounding ...
Reduced Order Modeling and Vibration Analysis of Mistuned Bladed Disk Assemblies With Shrouds
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents important improvements and extensions to a computationally efficient reduced order modeling technique for the vibration analysis of mistuned bladed disks. In particular, this ...
Consistent Modeling of Rotating Timoshenko Shafts Subject to Axial Loads
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The equations of motion of a flexible rotating shaft have been typically derived by introducing gyroscopic moments, in an inconsistent manner, as generalized work terms in a Lagrangian formulation ...
Calculation of Component Mode Synthesis Matrices From Measured Frequency Response Functions, Part 1: Theory
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents a new method to calculate the so-called Craig-Bampton component mode synthesis (CMS) matrices from measured frequency response functions. The procedure is based on a modified ...
Calculation of Component Mode Synthesis Matrices From Measured Frequency Response Functions, Part 2: Application
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper demonstrates how to calculate Craig-Bampton component mode synthesis matrices from measured frequency response functions. The procedure is based on a modified residual flexibility method, ...