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Wyświetlanie 1-15 z 28
Tytuł:
Modelling of a non-linear coil with loss in iron using the Runge-Kutta methods
Autorzy:
Kolańska-Płuska, J.
Grochowicz, B.
Powiązania:
https://bibliotekanauki.pl/articles/141304.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
non-linear coil
Runge-Kutta methods
stiff non-linear differential equations
Opis:
This work presents a study on dynamics of a circuit with a non-linear coil, where loss in iron is also taken into account. A coil model is derived using a state space description. The work also includes the development of an application in C# for coil dynamics examination, where the implicit RADAU IIA method of various orders is applied for the purpose of solving non-linear differential equations modelling the non-linear coil with loss in iron.
Źródło:
Archives of Electrical Engineering; 2016, 65, 3; 527-539
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Descriptor standard and positive discrete-time nonlinear systems
Autorzy:
Kaczorek, T.
Powiązania:
https://bibliotekanauki.pl/articles/229855.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
descriptor
Weierstrass-Kronecker decomposition
non-linear system
positivity
Opis:
A method of analysis of descriptor nonlinear discrete-time systems with regular pencils of linear part is proposed. The method is based on the Weierstrass-Kronecker decomposition of the pencils. Necessary and sufficient conditions for the positivity of the nonlinear systems are established. A procedure for computing the solution to the equations describing the nonlinear systems are proposed and demonstrated on numerical examples.
Źródło:
Archives of Control Sciences; 2015, 25, 2; 227-235
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A comprehensive approach to double inverted pendulum modelling
Autorzy:
Andrzejewski, Kamil
Czyżniewski, Mateusz
Zielonka, Maciej
Łangowski, Rafał
Zubowicz, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/229905.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
double inverted pendulum
modelling
non-linear dynamics
Lagrangian mechanics
Opis:
The problem of mathematical modelling and indication of properties of a DIP has been investigated in this paper. The aim of this work is to aggregate the knowledge on a DIP modelling using the Euler-Lagrange formalism in the presence of external forces and friction. To indicate the main properties important for simulation, model parameters identification and control system synthesis, analytical and numerical tools have been used. The investigated properties include stability of equilibrium points, a chaos of dynamics and non-minimum phase behaviour around an upper position. The presented results refer to the model of a physical (constructed) DIP system.
Źródło:
Archives of Control Sciences; 2019, 29, 3; 459-483
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On determination of inductances for circuit models of AC machines
Autorzy:
Sobczyk, T. J.
Powiązania:
https://bibliotekanauki.pl/articles/141479.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
electric machines
modelling magnetic non-linearity
dynamic inductances
non-linear inductances
Opis:
The paper discuss a problem of determination of inductances for AC machine windings when saturation of magnetic circuit is not neglected. For such cases, computation of magnetic field distribution in the machine magnetic circuit is a starting point for post processing procedures leading to various values, among others the co-energy in a given area and linkage fluxes of windings. This paper shows how to determine winding inductances in a nonlinear magnetic circuit from these two values and also how to compute directly nonlinear inductances. Problem is not trivial because such inductances are not uniquely determined as for linear case. In the paper a definition of nonlinear inductances is proposed which makes the choice unique.
Źródło:
Archives of Electrical Engineering; 2013, 62, 3; 487-496
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The choice of optimal 3-rd order polynomial packet dropping function for NLRED in the presence of self-similar traffic
Autorzy:
Domańska, J.
Augustyn, D.
Domański, A.
Powiązania:
https://bibliotekanauki.pl/articles/201691.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
self-similarity
active queue management
non-linear RED
dropping packets
Opis:
Algorithms of queue management in IP routers determine which packet should be deleted when necessary. The article investigates the influence of the self-similarity on the optimal packet rejection probability function in a special case of NLRED queues. This paper describes another approach to the non-linear packet dropping function. We propose to use the solutions based on the polynomials with degree equals to 3. The process of obtaining the optimal dropping packets function has been presented. Our researches were carried out using the Discrete Event Simulator OMNET++. The AQM model was early verified using the discrete-time Markov chain. The obtained results show that the traffic characteristic has the great impact on the network node behavior, but self-similarity of network traffic has no influence on the choosing of the optimal dropping packet function.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2012, 60, 4; 779-786
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Third harmonic current injection into highly saturated multi-phase machines
Autorzy:
Klute, F.
Jonsky, T.
Powiązania:
https://bibliotekanauki.pl/articles/140533.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
dq-model
non-linear effects
PMSM
saturation
third harmonic current injection
torque improvement
Opis:
One advantage of multi-phase machines is the possibility to use the third harmonic of the rotor flux for additional torque generation. This effect can be maximised for Permanent Magnet Synchronous Machines (PMSM) with a high third harmonic content in the magnet flux. This paper discusses the effects of third harmonic current injection (THCI) on a five-phase PMSM with a conventional magnet shape depending on saturation. The effects of THCI in five-phase machines are shown in a 2D FEM model in Ansys Maxwell verified by measurement results. The results of the FEM model are analytically analysed using the Park model. It is shown in simulation and measurement that the torque improvement by THCI increases significantly with the saturation level, as the amplitude of the third harmonic flux linkage increases with the saturation level but the phase shift of the rotor flux linkage has to be considered. This paper gives a detailed analysis of saturation mechanisms of PMSM, which can be used for optimizing the efficiency in operating points of high saturations, without using special magnet shapes.
Źródło:
Archives of Electrical Engineering; 2017, 66, 1; 179-187
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fluid flow approximation of time-limited TCP/UDP/XCP streams
Autorzy:
Domańska, J.
Domański, A.
Czachórski, T.
Klamka, J.
Powiązania:
https://bibliotekanauki.pl/articles/200337.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
fluid flow modeling
Internet
TCP/IP
UDP
XCP
active queue management
non-linear RED
Opis:
This article presents the use of fluid flow approximation to model interactions between a set of TCP, UDP and XCP flows in the environment of IP routers using AQM (Active Queue Management) algorithms to control traffic congestion. In contrast to other works, independent UDP and TCP streams are considered and the model allows to start and end data transmissions in TCP, UDP and XCP streams at any time moment. It incorporates several Active Queue Management mechanisms: RED, NLRED, CHOKe.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2014, 62, 2; 217-225
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimum design of non-uniform symmetrical linear antenna arrays using a novel modified invasive weeds optimization
Autorzy:
Kenane, E.
Djahli, F.
Powiązania:
https://bibliotekanauki.pl/articles/140370.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
invasive weeds optimization
non uniform linear array
optimization
synthesis
Opis:
This paper presents a new modified method for the synthesis of non-uniform linear antenna arrays. Based on the recently developed invasive weeds optimization technique (IWO), the modified invasive weeds optimization method (MIWO) uses the mutation process for the calculation of standard deviation (SD). Since the good choice of SD is particularly important in such algorithm, MIWO uses new values of this parameter to optimize the spacing between the array elements, which can improve the overall efficiency of the classical IWO method in terms of side lobe level (SLL) suppression and nulls control. Numerical examples are presented and compared to the existing array designs found in the literature, such as ant colony optimization (ACO), particle swarm optimization (PSO), and comprehensive learning PSO (CLPSO). Results show that MIWO method can be a good alternative in the design of non-uniform linear antenna array.
Źródło:
Archives of Electrical Engineering; 2016, 65, 1; 5-18
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rotor dynamics - four open questions
Autorzy:
Kiciński, Jan
Powiązania:
https://bibliotekanauki.pl/articles/2090686.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
rotor dynamics
non-linear models
prehistory
heuristic modelling
dynamika wirnika
dynamika nieliniowa
prehistoria
modelowanie heurystyczne
Opis:
Despite many years of development in the field of rotor dynamics, many issues still need to be resolved. This is due to the fact that turbomachines, even those with low output power, have a very complex design. The author of this article would like to signal these issues in the form of several questions, to which there are no precise answers. The questions are as follows: How can we build a coherent dynamic model of a turbomachine whose some subsystems have non-linear characteristics? How can we consider the so-called prehistory in our analysis, namely, the relation between future dynamic states and previous ones? Is heuristic modelling the future of rotor dynamics? What phenomena may occur when the stability limit of the system is exceeded? The attempt to find answers to these questions constitutes the subject of this article. There are obviously more similar questions, which encourage researchers from all over the world to further their research.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2021, 69, 6; e139791, 1--10
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Navigation complex with adaptive non-linear Kalman filter for unmanned flight vehicle
Autorzy:
Selezneva, Maria S.
Neusypin, Konstantin A.
Proletarsky, Andrey V.
Powiązania:
https://bibliotekanauki.pl/articles/221568.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
unmanned aerial vehicle
non-linear Kalman filter
parametric identification
SDC representation
implementation in the special calculator
Opis:
A navigation complex of an unmanned flight vehicle of small class is considered. Increasing the accuracy of navigation definitions is done with the help of a nonlinear Kalman filter in the implementation of the algorithm on board an aircraft in the face of severe limitations on the performance of the special calculator. The accuracy of the assessment depends on the available reliable information on the model of the process under study, which has a high degree of uncertainty. To carry out high-precision correction of the navigation complex, an adaptive non-linear Kalman filter with parametric identification was developed. The model of errors of the inertial navigation system is considered in the navigation complex, which is used in the algorithmic support. The procedure for identifying the parameters of a non-linear model represented by the SDC method in a scalar form is used. The developed adaptive non-linear Kalman filter is compact and easy to implement on board an aircraft.
Źródło:
Metrology and Measurement Systems; 2019, 26, 3; 541-550
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermal analysis of generalized Burgers nanofluid over a stretching sheet with nonlinear radiation and non uniform heat source/sink
Autorzy:
Kumar, K. G.
Ramesh, G. K.
Gireesha, B. J.
Powiązania:
https://bibliotekanauki.pl/articles/240767.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
burgers nanofluid
non-uniform heat source/sink
non-linear radiation
magnetic field
stretching surface
pole magnetyczne
powierzchnia
rozciąganie
promieniowanie
nanofluid
Opis:
The work deals with the heat analysis of generalized Burgers nanofluid over a stretching sheet. The Rosseland approximation is used to model the non-linear thermal radiation and incorporated non-uniform heat source/sink effect. The governing equations reduced to a set of nonlinear ordinary differential equations under considering the suitable similarity transformations. The obtained ordinary differential equations equations are solved numerically by Runge-Kutta-Fehlberg order method. The effect of important parameters on velocity, temperature and concentration distributions are analyzed and discussed through the graphs. It reveals that temperature increases with the increase of radiation and heat source/sink parameter.
Źródło:
Archives of Thermodynamics; 2018, 39, 2; 97-122
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Deep learning vs feature engineering in the assessment of voice signals for diagnosis in Parkinson’s disease
Autorzy:
Majda-Zdancewicz, Ewelina
Potulska-Chromik, Anna
Jakubowski, Jacek
Nojszewska, Monika
Kostera-Pruszczyk, Anna
Powiązania:
https://bibliotekanauki.pl/articles/2173626.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
voice processing
Parkinson’s disease
non-linear analysis
convolutional network
przetwarzanie głosu
choroba Parkinsona
analiza nieliniowa
sieci konwolucyjne
Opis:
Voice acoustic analysis can be a valuable and objective tool supporting the diagnosis of many neurodegenerative diseases, especially in times of distant medical examination during the pandemic. The article compares the application of selected signal processing methods and machine learning algorithms for the taxonomy of acquired speech signals representing the vowel a with prolonged phonation in patients with Parkinson’s disease and healthy subjects. The study was conducted using three different feature engineering techniques for the generation of speech signal features as well as the deep learning approach based on the processing of images involving spectrograms of different time and frequency resolutions. The research utilized real recordings acquired in the Department of Neurology at the Medical University of Warsaw, Poland. The discriminatory ability of feature vectors was evaluated using the SVM technique. The spectrograms were processed by the popular AlexNet convolutional neural network adopted to the binary classification task according to the strategy of transfer learning. The results of numerical experiments have shown different efficiencies of the examined approaches; however, the sensitivity of the best test based on the selected features proposed with respect to biological grounds of voice articulation reached the value of 97% with the specificity no worse than 93%. The results could be further slightly improved thanks to the combination of the selected deep learning and feature engineering algorithms in one stacked ensemble model.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2021, 69, 3; art. no. e137347
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Deep learning vs feature engineering in the assessment of voice signals for diagnosis in Parkinson’s disease
Autorzy:
Majda-Zdancewicz, Ewelina
Potulska-Chromik, Anna
Jakubowski, Jacek
Nojszewska, Monika
Kostera-Pruszczyk, Anna
Powiązania:
https://bibliotekanauki.pl/articles/2090742.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
voice processing
Parkinson’s disease
non-linear analysis
convolutional network
przetwarzanie głosu
choroba Parkinsona
analiza nieliniowa
sieci konwolucyjne
Opis:
Voice acoustic analysis can be a valuable and objective tool supporting the diagnosis of many neurodegenerative diseases, especially in times of distant medical examination during the pandemic. The article compares the application of selected signal processing methods and machine learning algorithms for the taxonomy of acquired speech signals representing the vowel a with prolonged phonation in patients with Parkinson’s disease and healthy subjects. The study was conducted using three different feature engineering techniques for the generation of speech signal features as well as the deep learning approach based on the processing of images involving spectrograms of different time and frequency resolutions. The research utilized real recordings acquired in the Department of Neurology at the Medical University of Warsaw, Poland. The discriminatory ability of feature vectors was evaluated using the SVM technique. The spectrograms were processed by the popular AlexNet convolutional neural network adopted to the binary classification task according to the strategy of transfer learning. The results of numerical experiments have shown different efficiencies of the examined approaches; however, the sensitivity of the best test based on the selected features proposed with respect to biological grounds of voice articulation reached the value of 97% with the specificity no worse than 93%. The results could be further slightly improved thanks to the combination of the selected deep learning and feature engineering algorithms in one stacked ensemble model.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2021, 69, 3; e137347, 1--10
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Catalyst regeneration techniques in naphtha reforming: Short review
Autorzy:
Gupta, Aviral
Gupta, S. K.
Powiązania:
https://bibliotekanauki.pl/articles/2173419.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
heterogeneous catalysis
regeneration
naphtha reforming
catalyst reactivation
non-linear
modelling
kataliza heterogeniczna
regeneracja
reformowanie benzyny ciężkiej
reaktywacja katalizatora
modelowanie
Opis:
Catalytic reforming is an important intermediate in the processing of crude (naphtha in particular) to obtain gasoline. The catalyst used in the process (platinum) is quite expensive and may negatively impact the business if not used judiciously. The aforesaid not only refers to the reduction in loss of the catalyst per unit of gasoline produced but also to the manufacturing of an environmentally friendlier product alongside which is the need of the planet and also a necessity to meet the increasingly strict government norms. In order to meet the above requirements, various refineries around the world use various well-known conventional methods which depend on the quality and quantity of crude manufactured by them. This paper focuses on highlighting recent advancements in methods of catalytic regeneration (CR) in the reforming unit of petroleum industries to produce high octane gasoline, without any major replacements in their existing setup. Research papers formulated by the application of methodologies involving non-linear models and real-time refinery data have only been considered to avoid any deviations/errors in practical applications. In-depth analysis of these papers has led to the origin of some ideas which have been included as suggestions and can be considered as subjects of further research. In all, the objective of the paper is to serve as a reference for researchers and engineers working on devising optimum methods to improve the regeneration of reforming catalysts.
Źródło:
Chemical and Process Engineering; 2022, 43, 2; 101--108
0208-6425
2300-1925
Pojawia się w:
Chemical and Process Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of filler type on non-linear viscoelastic characteristics of asphalt mastic
Wpływ rodzaju wypełniacza na nieliniową charakterystykę lepkosprężystą mastyksu
Autorzy:
Mazurek, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/1852656.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
lepkosprężystość nieliniowa
mastyks
wypełniacz mieszany
MSCR
multi stress creep recovery test
regresja
non-linear viscoelasticity
asphalt mastic
mixed filler
regression
Opis:
This article discusses the rheological tests and analyses based on the Schapery non-linear viscoelasticity model that were performed to study asphalt mastic behaviour under high shear stresses. Seven mineral filler types were applied in this study, including a mixed filler with hydrated lime and fillers derived from dust extraction systems. Determination of basic properties of the fillers was followed by creep and recovery tests (DSR) at different levels of shear stress conducted in accordance with a modified MSCR procedure. The first stage in the analysis was the identification of linear viscoelastic region and the non-linear viscoelasticity model parameters such as the length of the loading period, the temperature and the stress level using TTSSP (Time-Temperature- Stress Superposition Principle). Subsequent numerical simulations of strain variation with respect to stress confirmed a high degree of agreement between the non-linear viscoelasticity model and mastic sample behaviour. A strong correlation was found between the non-linear viscoelasticity parameters and mastic properties. The proposed methodology is able to quickly identify and eliminate the fillers that may contribute to HMA deformations.
W artykule przedstawiono badania i analizy efektów reologicznych mastyksu asfaltowego poddanego wysokim naprężeniem ścinającym wykorzystując model nieliniowej lepkosprężystości Schapery’ego. Docelowy materiał użyty w pracy, czyli mastyks jest efektywnym spoiwem mieszanki mineralno-asfaltowej (mma) będący produktem mieszania asfaltu i wypełniacza (<0,063 mm) zapewniającego właściwą kohezję pomiędzy składnikami zasadniczego szkieletu mineralnego. Relacja pomiędzy proporcjami składników (asfalt-wypełniacz) zdecydowanie wpływa a sztywność mma. Na temat wpływu rodzaju wypełniacza na właściwości mastyksu jak i również mma powstało wiele prac. Nie mniej jednak z faktu złożoności zjawisk reologicznych jakie towarzyszą odkształcalności mastyksu badania nad fenomenologią mastyks wciąż trwają. Według wymagań krajowych (WT-1/2014), jako produkt pełnowartościowy, należy uznać wypełniacz o zawartości węglanu wapnia ≥70%. Z kolei autorzy raportu NCHRP 9-45 stwierdzili, że na właściwości mechaniczne w niskiej i wysokiej temperaturze miały wpływ przede wszystkim właściwości fizyczne wypełniacza takie jak: porowatość, uziarnienie. Ponadto zaobserwowali zadawalające rezultaty jakości mastyksu można uzyskać z wypełniaczami pochodzącymi z systemów odpylania kruszyw nierzadko o odczynie kwaśnym. Z faktu występowania dużych rozbieżności opinii w analizie zostały zastosowane materiały pełnowartościowe: mączka wapienna (L), wypełniacz mieszany: 85% mączka wapienna/15% wapno hydratyzowane (0.15HL/L), wypełniacz mieszany: 70% mączka wapienna/30%wapno hydratyzowane (0.30HL/L). Do dalszej ewaluacji wykorzystano materiały niespełniające kryteria jakościowe (według WT-1/2014) takie jak: pyły pochodzenia gabrowego (G), pyły pochodzenia kwarcytowego (Q), pyły pochodzenia bazaltowego (B), pyły pochodzenia dolomitowego (D) oraz pyły granitowe (do celów walidacji). O skuteczności aplikacji danego wypełniacza świadczy również zachowanie finalnego mastyksu w punktu widzenia jego odkształcalności przy wysokich naprężeniach. Dlatego też do oceny zjawiska pełzania i powrotu sprężystego wykorzystano badania monotoniczne w próbie pełzania z odciążeniem (powrót sprężysty) z zastosowaniem zmodyfikowanej procedury MMSCR. Metoda MMSCR stanowi modyfikację tradycyjnej metody MSCR (Multi Stress Creep Recovery Test) dedykowanej ocenie pełzania asfaltów poddanych cyklicznemu naprężeniu ścinającemu. Metoda MMSCR stanowi rozwinięcie metody MSCR poprzez szerszą analizę zakresu nieliniowego lepkosprężystości o wiele bardziej racjonalnego w rzeczywistej pracy mma. W zmodyfikowanym programie MMSCR pomiar odkształcenia (sekwencja), tak samo jak w badaniu MSCR, był realizowany w czasie trwania obciążenia przez 1 s (sekwencja obciążenia) a następnie odkształcenia w czasie powrotu (sekwencja odciążenia) trwającego 9 s. Badanie zostało powtórzone w trzech temperaturach, czyli: 50oC, 60oC, 70oC aby uwzględnić zasadę superpozycji czas-temperatura (TTSP). Ponadto uwzględniono trzy poziomy naprężenia ścinającego 100Pa, 3200Pa oraz 6400Pa aby wykorzystać najbardziej zaawansowaną zasadę superpozycji TTSSP (time temperature stress superposition principle).
Źródło:
Archives of Civil Engineering; 2021, 67, 2; 247-259
1230-2945
Pojawia się w:
Archives of Civil Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
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