Results 1 to 10 of about 8,666 (206)

Strong isolation by distance among local populations of an endangered butterfly species (Euphydryas aurinia) [PDF]

open access: yesEcology and Evolution, 2021
The marsh fritillary (Euphydryas aurinia) is a critically endangered butterfly species in Denmark known to be particularly vulnerable to habitat fragmentation due to its poor dispersal capacity.
Cino Pertoldi   +6 more
doaj   +2 more sources

Nonlinear model reduction for large-scale structures via dual substructuring [PDF]

open access: yesScientific Reports
This work presents a nonlinear model reduction strategy for large-scale structural systems with localized nonlinearities based on a dual substructuring approach.
Pedro A. Flores
doaj   +2 more sources

Prediction and reduction in vehicle noise by frequency response function–based substructuring

open access: yesAdvances in Mechanical Engineering, 2016
The purpose of this study was to use a hybrid frequency response function–based substructuring synthesis method to predict the structure-borne noise of a vehicle frame resulting due to excitation by the engine and to develop a noise reduction method for ...
Hee-Min Noh
exaly   +2 more sources

CKM substructure [PDF]

open access: yesJournal of High Energy Physics, 2021
Abstract The CKM matrix is not generic. The Wolfenstein parametrization encodes structure by having one small parameter, λ ≈ 0.22. We pose the question: is there substructure in the CKM matrix that goes beyond the single small parameter of the Wolfenstein parameterization?
Grossman, Yuval, Ruderman, Joshua
openaire   +3 more sources

Concurrent design method of the resonance frequencies of a whole structure without mutually releasing their vibration analysis models of subsystems

open access: yesNihon Kikai Gakkai ronbunshu, 2021
This paper addresses the modular concept concurrent design of NVH (Noise, Vibration and Harshness) performance. Recent development of modularization design in car companies requires the realization of the modularization of NVH design process.
Yuichi MATSUMURA   +3 more
doaj   +1 more source

Simultaneous Identification of Free and Supported Frequency Response Functions of a Rotor in Active Magnetic Bearings

open access: yesActuators, 2022
Frequency response functions (FRFs) of rotor systems can be used as indicator functions for condition monitoring. Component-wise FRFs are of high interest to locate errors in the case of defects.
Michael Kreutz   +3 more
doaj   +1 more source

Configuration-Dependent Substructuring as a Tool to Predict the Vibrational Response of Mechanisms

open access: yesMachines, 2022
Dynamic substructuring allows us to predict the dynamic behavior of mechanical systems built by linking together several subsystems, whose dynamic behavior is known.
Jacopo Brunetti   +2 more
doaj   +1 more source

On symmetries of substructures [PDF]

open access: yesActa Crystallographica Section D Biological Crystallography, 2003
This paper accompanies a lecture given at the 2003 CCP4 Study Weekend on experimental phasing. With the audience of the CCP4 Study Weekend in mind, an overview is given of symmetries of substructures and the implications for single isomorphous replacement and single anomalous diffraction phasing procedures, as well as difference Fourier analyses ...
R W, Grosse-Kunstleve, P D, Adams
openaire   +2 more sources

Modal contribution index of subsystems for studying vibration countermeasures of a whole structure

open access: yesNihon Kikai Gakkai ronbunshu, 2020
When designing NVH (Noise, Vibration and Harshness) performance for complex structures such as automobiles, trains, and aircraft, it is rare to target all components of the whole structure and the subsystem be designed are often fixed.
Yuichi MATSUMURA   +3 more
doaj   +1 more source

Reducing Computational and Memory Cost of Substructuring Technique in Finite Element Models [PDF]

open access: yesNumerical Methods in Civil Engineering, 2018
Substructuring in the finite element method is a technique that reduces computational cost and memory usage for analysis of complex structures. The efficiency of this technique depends on the number of substructures in different problems.
M H. Kadkhodaee, H. Moslemi
doaj   +1 more source

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