Pseudo excitation method

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August undefined, 2024

WebJun 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 method with the two-and-a-half-dimensional finite element method. This … 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.

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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. WebMar 18, 2024 · Originality/value. 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 … rk toronto

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WebPast historical earthquake events from neighbouring countries have been proven to be disastrous. Building in the aftermath of an earthquake may reduce structural reliability, posing risk upon re-occupation of the building. Shock absorber viscous dampers were installed on a specific structure storey that could reduce the spectral acceleration and … WebMar 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... WebNov 1, 1999 · The pseudo-excitation method, in which random excitations are mathematically represented by a series of harmonic loads, is developed for vibration … sms phones

Random Vibration Study of Structures under Multi-Component …

Riding comfort optimization of railway trains based on pseudo ...

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 … 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 … smsphisherWebJun 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 … rk township\\u0027s

"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. " - Pseudo excitation method

Pseudo excitation method

Nonstationary Random Vibration Performance of Train-Bridge ... - Hindawi

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 … WebOct 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 …

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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 · 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 …

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. 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

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. WebAbstract. This study aimed to evaluate the prevalence of preexcitation and possible pseudo-preexcitation among patients undergoing complex congenital heart surgery at a single …

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 …

WebJan 29, 2001 · Abstract â The stochastic orthogonal polynomial expansion method is extended with the pseudo-excitation method in this paper. This extension enables the stochastic orthogonal polynomial... rkt ownershipWebAug 19, 2024 · The pseudoexcitation method (PEM) can improve efficiency of random vibration analysis. However, for large-sized structures with wide frequency range of … sms phone number for verificationWebApr 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 ... smspin loginWebMar 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 … smspin verify.comWebSep 7, 2024 · In this work, an existing numerical method, called the pseudo-equivalent deterministic excitation method (PEDE M ), is further developed for the experimental … sms picture makerWebOct 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 … r.k. township properties private limited sms pictogramme