Results 231 to 240 of about 33,387 (263)

Complex Eigenvalue Analysis Applied to an Aircraft Brake Vibration Problem

Volume 3A: 15th Biennial Conference on Mechanical Vibration and Noise — Vibration of Nonlinear, Random, and Time-Varying Systems, 1995
Abstract A conventional finite element model of an aircraft wheel and brake is extended to include forces responsible for friction-induced noise. Responses of aircraft brake vibration modes change the normal force across the brake friction interfaces, and consequently the friction forces.
Denis J. Feld, Dana J. Fehr
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Complex Eigenvalue Analysis for Reducing Low Frequency Brake Squeal

SAE Technical Paper Series, 2000
<div class="section abstract"><div class="htmlview paragraph">A front disc brake system is used as an example for an investigation of low frequency squeal. Many different modifications to this disc brake system have been proposed and this paper focuses on a solution that reduces the stiffness of the rotor.
Shih-Wei Kung, K. Brent Dunlap, Robert S. Ballinger   +2 more
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Complexity analysis of eigenvalue based spectrum sensing techniques in cognitive radio networks

2012 18th Asia-Pacific Conference on Communications (APCC), 2012
Energy based spectrum sensing detectors is optimal in terms of computational complexity but they have certain limitations of their dependence upon noise. In contrast eigenvalue based algorithms do not depend upon noise uncertainty. Eigenvalue based algorithms are computationally complex as compared to energy detection method.
Ammar Ikram, Adnan Rashdi
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Largest eigenvalue of complex wishart matrices and performance analysis of MIMO MRC systems

IEEE Journal on Selected Areas in Communications, 2003
This paper extends Khatri (1964, 1969) distribution of the largest eigenvalue of central complex Wishart matrices to the noncentral case. It then applies the resulting new statistical results to obtain closed-form expressions for the outage probability of multiple-input-multiple-output (MIMO) systems employing maximal ratio combining (known also as ...
Ming Kang 0001, Mohamed-Slim Alouini
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Rotating Disc Model for Complex Eigenvalue Analysis of Brake Squeal

2015
Modelling of disc rotor is a key step in building a disc brake model for squeal analysis. While braking, the disc is rotating and other components are fixed and there are sliding contact between the pads and the disc. In the most common used complex eigenvalue analysis method, the moving load nature was normally ignored.
Yujian Wang, Yongchang Du, Pu Gao
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A Study on the Reduction of Disc Brake Squeal Using Complex Eigenvalue Analysis

SAE Technical Paper Series, 2001
<div class="htmlview paragraph">In this paper, we investigate a method to calculate the dynamic instability of a disc brake system and propose a criterion of design modification. To estimate dynamic instability, complex eigenvalue analysis is performed for a brake system and the contribution factor of each component to an unstable complex mode is
Choonki Park, Min Gyu Han, Sung Sun Cho, Hyoung Gil Choi, Ji Deok Jeong, Jang Moo Lee   +5 more
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A prediction methodology of disk brake squeal using complex eigenvalue analysis

International Journal of Vehicle Design, 2008
This paper presents a methodology for predicting disk brake squeal using the Finite Element (FE) method whereby a three-dimensional FE model of a real disk brake is validated at the component and assembly levels, and more importantly through contact analysis.
Abd Rahim AbuBakar, Huajiang Ouyang
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Mathematical and Numerical Analysis of the Generalized Complex-Frequency Eigenvalue Problem for Two-Dimensional Optical Microcavities

SIAM Journal on Applied Mathematics, 2020
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Alexander O. Spiridonov, Alina Oktyabrskaya, Evgenii M. Karchevskii, Alexander I. Nosich   +3 more
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Study on the design sensitivity analysis based on complex variable in eigenvalue problem

Finite Elements in Analysis and Design, 2009
In the sensitivity techniques, the adjoint variable method is quite popular because it reduces computation time and save computer resources. Commonly, the adjoint variable method employs exact analytical differentiation with respect to the design variables. But, it can be cumbersome to precisely differentiate every given type of finite element.
Hyungi Kim, Maenghyo Cho
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Analysis of squeaking on ceramic hip endoprosthesis using the complex eigenvalue method

Wear, 2011
Abstract A finite element model of the ceramic hip endoprosthesis system is established with ABAQUS 6.7. The generation mechanism of squeaking is studied using the complex eigenvalue method which allows for a stability analysis of the system under friction coupling.
N. Fan, G.X. Chen, L.M. Qian
openaire   +1 more source