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RISOn Damping Entire Bladed Disks Through Dampers on Only a Few Blades
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The focus of this paper is on demonstrating the potential to damp entire bladed disks using dampers on only a fraction of the blades. This problem is first considered without the presence ...
Identification of Structural Parameters in Mistuned Bladed Disks
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The present investigation focused on the estimation of the parameters of a structural model to represent “at best” a set of measurements of the steady state response of a mistuned bladed disk. ...
Robust Optimal Positioning of Strain Gages on Blades
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper focuses on the formulation and validation of an automatic strategy for the selection of the locations and directions of strain gages to capture at best the modal response of a ...
Comparison of Some Simulation Algorithms on Basis of Distribution
Publisher: American Society of Civil Engineers
Abstract: The statistical distribution of the time series generated by three simulation algorithms of Gaussian stochastic processes are derived and compared. In all three methods, the time histories are modeled as weighted linear ...
Z‐Transform Modeling of P‐M Wave Spectrum
Publisher: American Society of Civil Engineers
Abstract: The approximation of the Pierson‐Moskowitz (P‐M) wave spectrum as the output of digital filters to white noise excitation is considered. It is shown that the mathematical peculiarity of this spectrum is the source of the ...
Simulation of Stationary Random Processes: Two‐Stage MA to ARMA Approach
Publisher: American Society of Civil Engineers
Abstract: The determination of moving average (MA) and autoregressive moving average (ARMA) algorithms for simulating realizations of multivariate random processes with a specified, or target, spectral matrix is presented. The MA ...
Maximum Amplification of Blade Response due to Mistuning: Localization and Mode Shape Aspects of the Worst Disks
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper focuses on the determination and study of the maximum amplification of the steady state forced response of bladed disks due to mistuning. First, an optimization strategy is proposed ...
Nonparametric Stochastic Modeling of Uncertainty in Rotordynamics—Part II: Applications
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In the first part of this series, a comprehensive methodology was proposed for the consideration of uncertainty in rotordynamic systems. This second part focuses on the application of this ...
Nonparametric Stochastic Modeling of Uncertainty in Rotordynamics—Part I: Formulation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A systematic and rational approach is presented for the consideration of uncertainty in rotordynamics systems, i.e., in rotor mass and gyroscopic matrices, stiffness matrix, and bearing coefficients. ...
Nonlinear Reduced-Order Modeling of Flat Cantilevered Structures: Identification Challenges and Remedies
Publisher: ASCE
Abstract: The focus of this investigation is on the development and validation of nonintrusive structural dynamic reduced-order models (ROMs) for the geometrically nonlinear response of flat cantilevered structures, e.g., beams ...