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Wyszukujesz frazę "sensitivity optimisation" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Comparative calculation of the fuel-optimal operating strategy for diesel hybrid railway vehicles
Autorzy:
Leska, M.
Aschemann, H.
Melzer, M.
Meinert, M.
Powiązania:
https://bibliotekanauki.pl/articles/330621.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
hybrid railway vehicle
fuel optimal energy management
dynamic programming
sensitivity optimisation
pojazd szynowy
pojazd hybrydowy
gospodarka energetyczna
programowanie dynamiczne
Opis:
In contrast to road-based traffic, the track as well as the corresponding duty cycle for railways are known beforehand, which represents a great advantage during the development of operating strategies for hybrid vehicles. Hence the benefits of hybrid vehicles regarding the fuel consumption can be exploited by means of an off-line optimisation. In this article, the fuel-optimal operating strategy is calculated for one specified track using two hybrid railway vehicles with different kinds of energy storage systems: on the one hand, a lithium-ion battery (high-energy storage) and, on the other, a double layer capacitor (high-power storage). For this purpose, control-oriented simulation models are developed for each architecture addressing the main effects contributing to the longitudinal dynamics of the power train. Based on these simulation models, the fuel-optimal operating strategy is calculated by two different approaches: Bellman’s dynamic programming, a well-known approach in this field, and an innovative sensitivity-based optimisation.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2017, 27, 2; 323-336
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A structural optimisation viewpoint on growth phenomena
Autorzy:
Barthold, F.
Powiązania:
https://bibliotekanauki.pl/articles/201312.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
computational mechanics
structural optimisation
sensitivity analysis
configurational mechanics
growth
Opis:
Evolutionary solid bodies undergoing changes of mass, of properties, and of shapes are considered in models of growth and adaptation and similarily in structural optimisation. A fundamental separation of different growth phenomena and a subsequent parametrisation using independent design variables for the amount of substance as well as for molar mass and molar volume facilitates an efficient formulation of the design space. Thus, the effects of design variations, i.e. change of amount of substance, on the variations of the structural response, i.e. the deformation in physical space, can be clearly described. Overall, a novel treatment of growth processes based on an evolution of the amount of substance is outlined. The parallelism of variations in physical and design space are highlighted and compared with the multiplicative decomposition of the deformation gradient into a growth and an elastic part incorporating an incompatible intermediate configuration. This drawback is overcome by a compatible manifold based on material points modelling the amount of substance outside of any geometrical space.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2012, 60, 2; 247-252
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Contribution to random vibration numerical simulation and optimisation of nonlinear mechanical systems
Autorzy:
Sága, Milan
Vaško, Milan
Handrik, Marian
Kopas, Peter
Powiązania:
https://bibliotekanauki.pl/articles/947404.pdf
Data publikacji:
2019
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
statistical linearization
sensitivity analysis
structural optimisation
linearyzacja statystyczna
analiza wrażliwości
optymalizacja strukturalna
Opis:
This study considered the solution of the stochastic vibration of non-linear mechanical systems with Gaussian random excitations. It realised a short review of linearisations techniques in stochastic dynamics mainly with application in the area of truss finite element modelling. The presented method of statistical linearisation is applied to numerical testing. In the second part of the article, the sensitivity analysis of the first two stress statistical moments and structural weight minimising subjected to the random stress constrains presented by mean value and standard deviation was brought to the fore. Cross-sectional areas were used as optimising parameters.
Źródło:
Zeszyty Naukowe. Transport / Politechnika Śląska; 2019, 103; 143-154
0209-3324
2450-1549
Pojawia się w:
Zeszyty Naukowe. Transport / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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