2024 Pseudo excitation method

Pseudo excitation method

Author: rrez

August undefined, 2024

WebJun 18, 2013 · Moreover, the pseudo excitation method (PEM) is employed to speed up the spectral analysis. For identifying crack parameters based on the constructed Kriging model, a robust stochastic particle swarm optimization (SPSO) algorithm is adopted for enhancing the global searching ability. To improve the accuracy of the surrogate model without … WebDec 31, 2011 · Abstract. Pseudo Excitation Method (PEM) as a highly efficient and accurate algorithm series of stationary and nonstationary random vibration of structures has been …

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WebOct 14, 2013 · By differentiating the equations of motion of the coupled system, the first- and second-order stationary sensitivity equations can be derived, which are subjected to harmonic pseudo-excitations and have low dofs due to the application of PEM and symplectic mathematical method. WebMar 18, 2024 · The pseudo excitation method is used to solve the vibration response of aero-engine pipeline system, and the optimization of the hoop layout for aero-engine spatial pipelines under random excitation to reduce random vibration response is studied systematically. Keywords Genetic algorithm Optimization of hoop layout Random excitation paris hilton resorts world

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Weban overview of the basic excitation methods, such as, random, periodic random, pseudo-random, and burst random. The paper then reviews the use of cyclic averaging with random excitation methods. Finally, the paper develops a new excitation method that is the result of combining cyclic averaging with burst random excitation. WebApr 16, 2024 · A novel frequency domain approach, which combines the pseudo excitation method modified by the authors and multi-domain Fourier transform (PEM-FT), is proposed for analyzing nonstationary random vibration in this paper.,For a structure subjected to a nonstationary random excitation, the closed-form solution of evolutionary power spectral ... WebNov 1, 1999 · The pseudo-excitation method, in which random excitations are mathematically represented by a series of harmonic loads, is developed for vibration … time tables display

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WebApr 10, 2024 · Wafer surface defect detection plays an important role in controlling product quality in semiconductor manufacturing, which has become a research hotspot in computer vision. However, the induction and summary of wafer defect detection methods in the existing review literature are not thorough enough and lack an objective analysis and … WebOct 6, 2024 · Pseudo excitation method (PEM) Finite element-boundary element method-statistical energy analysis (FEM-BEM-SEA) Sound ray-tracing method Acknowledgements The performed research described is financially supported by the National Natural Science Foundation of China (52178101) and Fundamental Research Funds for the Central … paris hilton religion and politicsWebJun 27, 2024 · A framework is developed in this article to predict the nonstationary random ground vibrations induced by high-speed trains, by combining the pseudo-excitation … timetables dublin bus

"WebJun 19, 2009 · In this article, sensitivity analysis formulae for optimizing vehicle suspension systems are derived using the pseudo excitation method (PEM). A spatial finite element model is used to describe the dynamic behaviour of a vehicle running on a randomly uneven road, of which the irregularity is assumed to be a Gaussian random process. " - Pseudo excitation method

Pseudo excitation method

Vibration response analysis and hoop layout optimization of …

WebMethod 514.6 random vibration test. This thesis details the methods and results of both computational and experimental techniques to ensure the design would pass random vibration testing. Background is provided on random vibration theory and the application of various statistical methods to determine a structure's fatigue life. WebAbstract The stochastic orthogonal polynomial expansion method is extended with the pseudo-excitation method in this paper. This extension enables the stochastic orthogonal polynomial method to be readily used in the analysis of stochastic parameter structures under non-stationary random excitation.

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WebSep 18, 2024 · The power spectrum density of random excitation is used to define a series of non-stationary pseudo excitation in pseudo excitation method and the trigonometric series of random vibration history samples in Monte Carlo method, respectively solved by precise integral method and Newmark-β method through the inter-system iterative …

WebSep 7, 2024 · CsPbI3 quantum dots (QDs) are of great interest in new-generation photovoltaics (PVs) due to their excellent optoelectronic properties. The long and insulative ligands protect their phase stability and enable superior photoluminescence quantum yield, however, limiting charge transportation and extraction in PV devices. In this work, we use … WebMar 1, 2024 · In this paper, the Volterra series and the pseudo-excitation method (PEM) are combined to establish a frequency domain method for the power spectral density (PSD) analysis of random vibration of …

WebThe pseudo excitation method (PEM) is improved for its efficiency by incorporating the self-adaptive Gauss integration (SGI) technology as a new combining integration. The PEM … WebThe exact solutions of free vibration of thin plates with two opposite edges simply supported boundary conditions are introduced. Then, the full analytical procedure for random vibration analysis of the plate is established by using a pseudo excitation method (PEM) that can consider all modal auto-correlation and cross-correlation terms.

WebSep 7, 2024 · In this work, an existing numerical method, called the pseudo-equivalent deterministic excitation method (PEDE M ), is further developed for the experimental …

WebNov 1, 1999 · The pseudo-excitation method, in which random excitations are mathematically represented by a series of harmonic loads, is developed for vibration analysis of wind-excited large civil engineering structures of closely spaced natural frequencies or equipped with discrete damping devices. paris hilton recent imagesWebOct 11, 2024 · Pseudo-excitation method is an accurate and efficient random vibration analysis method. The stationary random vibration analysis can be equivalent to the harmonic vibration analysis. The schematic of pseudo excitation can be expressed as the equation (17) S uu = H ( ω) 2 S xx (17a) u = H ( ω) e ω t (17b) u ~ = S xx H ( ω) e i ω t … timetable seaford trainWebIn this study, an efficient analysis framework for high-speed train-bridge coupled vibrations under non-stationary winds based on the pseudo excitation method (PEM) has been developed, in which the non-stationary winds were transformed into a series of pseudoharmonic excitation vectors. timetable search uqWebDec 12, 2024 · Abstract. The stochastic pseudo excitation method (SPEM), which is based on the principle of pseudo excitation method (PEM), is introduced to represent the … timetable self help uweWebPseudo Excitation Method (PEM) as a highly efficient and accurate algorithm series of stationary and non-stationary random vibration of structures has been widely used in China. timetables downloadWebMar 5, 2024 · Pseudo excitation method (PEM) [28, 29] applies that the PSDF-relevant simple harmonic load function to represent the ground motion excitation, which can obtain implicit expression of PSDF of... timetable searchWebOct 19, 2024 · The pseudo-excitation of irregularities can be obtained by adding the pseudo-excitations for all the wheel sets. Based on the fundamental assumption of PEM, the track … paris hilton shoes line