Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "physics" wg kryterium: Wszystkie pola

  Lista filtrów
Wyrównaj
Wyświetlanie 1-15 z 430
Tytuł:
Non-ergodic probabilistic seismic hazard methodology using physics-based ground motion prediction: the case of LAquila, Italy
Autorzy:
Aguirre, Jedidiah Joel
Rubino, Bruno
Vassallo, Maurizio
Di Giulio, Giuseppe
Visini, Francesco
Powiązania:
https://bibliotekanauki.pl/articles/1950802.pdf
Data publikacji:
2022-02-05
Wydawca:
Politechnika Gdańska
Tematy:
non-ergodic probabilistic seismic hazard analysis
physics-based ground motionprediction
modified time-weakening friction law
peak ground acceleration
hazard curve
City of L’Aquila
analiza zagrożeń sejsmicznych
przewidywanie ruchu naziemnego
zmodyfikowane prawo tarcia
szczytowe przyspieszenie naziemne
krzywa zagrożenia
L'aquila
Opis:
A non-ergodic probabilistic seismic hazard analysis (PSHA) utilizing the physics-based ground motion prediction was proposed in this study to minimize the increasing uncertainties in the use of empirical equations. The City of L’Aquila in Italy was used for illustrative purposes due to the availability of data and the historical seismicity of the site. A total of 28 seismic sources were identified in this study located within a 100 km radius from the city. Fault properties such as geometry and location were obtained from the literature, while the fault occurrence rates were obtained using the FiSH Code. A modified time-weakening friction law was proposed to model the seismic energy released by an earthquake. Uncertainties in different rupture scenarios were characterized through the Guttenberg-Richter Relations and the Characteristic Brownian Time Passage. Uncertainties in distances were characterized through probability mass functions, which were used to calculate the ground motion exceedance probabilities. The 1D elastodynamic equation coupled with the Hooke’s law was used to predict the peak ground acceleration (PGA), a measure of the ground shaking level. A hazard curve, which is a plot of PGA and its recurrence, was constructed and compared with the results of the study of Valentini, et al., AGU 100: Advancing Earth and Space Science (2019). The method proposed in this study predicts a higher hazard rates for PGAs less than 0.70 g, which implies that the ground motion was overestimated for very far sources. In contrast, lower hazard curves were observed for PGAs greater than 0.70g which can be attributed to fewer seismic sources considered in this study.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2020, 24, 2; 97-185
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Non-ergodic probabilistic seismic hazard methodology using physics-based ground motion prediction: the case of LAquila, Italy - Appendices
Autorzy:
Aguirre, Jedidiah Joel
Rubino, Bruno
Vassallo, Maurizio
Di Giulio, Giuseppe
Visini, Francesco
Powiązania:
https://bibliotekanauki.pl/articles/2035851.pdf
Data publikacji:
2020
Wydawca:
Politechnika Gdańska
Tematy:
non-ergodic probabilistic seismic hazard analysis
physics-based ground motion prediction
modified time-weakening friction law
peak ground acceleration
hazard curve
City of L’Aquila
analiza zagrożeń sejsmicznych
przewidywanie ruchu naziemnego
zmodyfikowane prawo tarcia
szczytowe przyspieszenie naziemne
krzywa zagrożenia
L'aquila
Opis:
A non-ergodic probabilistic seismic hazard analysis (PSHA) utilizing the physics-based ground motion prediction was proposed in this study to minimize the increasing uncertainties in the use of empirical equations. The City of L’Aquila in Italy was used for illustrative purposes due to the availability of data and the historical seismicity of the site. A total of 28 seismic sources were identified in this study located within a 100 km radius from the city. Fault properties such as geometry and location were obtained from the literature, while the fault occurrence rates were obtained using the FiSH Code. A modified time-weakening friction law was proposed to model the seismic energy released by an earthquake. Uncertainties in different rupture scenarios were characterized through the Guttenberg-Richter Relations and the Characteristic Brownian Time Passage. Uncertainties in distances were characterized through probability mass functions, which were used to calculate the ground motion exceedance probabilities. The 1D elastodynamic equation coupled with the Hooke’s law was used to predict the peak ground acceleration (PGA), a measure of the ground shaking level. A hazard curve, which is a plot of PGA and its recurrence, was constructed and compared with the results of the study of Valentini, et al., AGU 100: Advancing Earth and Space Science (2019). The method proposed in this study predicts a higher hazard rates for PGAs less than 0.70 g, which implies that the ground motion was overestimated for very far sources. In contrast, lower hazard curves were observed for PGAs greater than 0.70g which can be attributed to fewer seismic sources considered in this study.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2020, 24, 2; 166-182
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Non-ergodic probabilistic seismic hazard methodology using physics-based ground motion prediction: the case of LAquila, Italy - Part I Theoretical background
Autorzy:
Aguirre, Jedidiah Joel
Rubino, Bruno
Vassallo, Maurizio
Di Giulio, Giuseppe
Visini, Francesco
Powiązania:
https://bibliotekanauki.pl/articles/2035834.pdf
Data publikacji:
2020
Wydawca:
Politechnika Gdańska
Tematy:
non-ergodic probabilistic seismic hazard analysis
physics-based ground motion prediction
modified time-weakening friction law
peak ground acceleration
hazard curve
City of L’Aquila
analiza zagrożeń sejsmicznych
przewidywanie ruchu naziemnego
zmodyfikowane prawo tarcia
szczytowe przyspieszenie naziemne
krzywa zagrożenia
L'aquila
Opis:
A non-ergodic probabilistic seismic hazard analysis (PSHA) utilizing the physics-based ground motion prediction was proposed in this study to minimize the increasing uncertainties in the use of empirical equations. The City of L’Aquila in Italy was used for illustrative purposes due to the availability of data and the historical seismicity of the site. A total of 28 seismic sources were identified in this study located within a 100 km radius from the city. Fault properties such as geometry and location were obtained from the literature, while the fault occurrence rates were obtained using the FiSH Code. A modified time-weakening friction law was proposed to model the seismic energy released by an earthquake. Uncertainties in different rupture scenarios were characterized through the Guttenberg-Richter Relations and the Characteristic Brownian Time Passage. Uncertainties in distances were characterized through probability mass functions, which were used to calculate the ground motion exceedance probabilities. The 1D elastodynamic equation coupled with the Hooke’s law was used to predict the peak ground acceleration (PGA), a measure of the ground shaking level. A hazard curve, which is a plot of PGA and its recurrence, was constructed and compared with the results of the study of Valentini, et al., AGU 100: Advancing Earth and Space Science (2019). The method proposed in this study predicts a higher hazard rates for PGAs less than 0.70 g, which implies that the ground motion was overestimated for very far sources. In contrast, lower hazard curves were observed for PGAs greater than 0.70g which can be attributed to fewer seismic sources considered in this study.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2020, 24, 2; 97-137
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Non-ergodic probabilistic seismic hazard methodology using physics-based ground motion prediction: the case of LAquila, Italy - Part II Methodology
Autorzy:
Aguirre, Jedidiah Joel
Rubino, Bruno
Vassallo, Maurizio
Di Giulio, Giuseppe
Visini, Francesco
Powiązania:
https://bibliotekanauki.pl/articles/2035843.pdf
Data publikacji:
2020
Wydawca:
Politechnika Gdańska
Tematy:
non-ergodic probabilistic seismic hazard analysis
physics-based ground motion prediction
modified time-weakening friction law
peak ground acceleration
hazard curve
City of L’Aquila
analiza zagrożeń sejsmicznych
przewidywanie ruchu naziemnego
zmodyfikowane prawo tarcia
szczytowe przyspieszenie naziemne
krzywa zagrożenia
L'aquila
Opis:
A non-ergodic probabilistic seismic hazard analysis (PSHA) utilizing the physics-based ground motion prediction was proposed in this study to minimize the increasing uncertainties in the use of empirical equations. The City of L’Aquila in Italy was used for illustrative purposes due to the availability of data and the historical seismicity of the site. A total of 28 seismic sources were identified in this study located within a 100 km radius from the city. Fault properties such as geometry and location were obtained from the literature, while the fault occurrence rates were obtained using the FiSH Code. A modified time-weakening friction law was proposed to model the seismic energy released by an earthquake. Uncertainties in different rupture scenarios were characterized through the Guttenberg-Richter Relations and the Characteristic Brownian Time Passage. Uncertainties in distances were characterized through probability mass functions, which were used to calculate the ground motion exceedance probabilities. The 1D elastodynamic equation coupled with the Hooke’s law was used to predict the peak ground acceleration (PGA), a measure of the ground shaking level. A hazard curve, which is a plot of PGA and its recurrence, was constructed and compared with the results of the study of Valentini, et al., AGU 100: Advancing Earth and Space Science (2019). The method proposed in this study predicts a higher hazard rates for PGAs less than 0.70 g, which implies that the ground motion was overestimated for very far sources. In contrast, lower hazard curves were observed for PGAs greater than 0.70g which can be attributed to fewer seismic sources considered in this study.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2020, 24, 2; 137-153
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Non-ergodic probabilistic seismic hazard methodology using physics-based ground motion prediction: the case of LAquila, Italy - Part III Results and Discussion
Autorzy:
Aguirre, Jedidiah Joel
Rubino, Bruno
Vassallo, Maurizio
Di Giulio, Giuseppe
Visini, Francesco
Powiązania:
https://bibliotekanauki.pl/articles/2035849.pdf
Data publikacji:
2020
Wydawca:
Politechnika Gdańska
Tematy:
non-ergodic probabilistic seismic hazard analysis
physics-based ground motion prediction
modified time-weakening friction law
peak ground acceleration
hazard curve
City of L’Aquila
analiza zagrożeń sejsmicznych
przewidywanie ruchu naziemnego
zmodyfikowane prawo tarcia
szczytowe przyspieszenie naziemne
krzywa zagrożenia
L'aquila
Opis:
A non-ergodic probabilistic seismic hazard analysis (PSHA) utilizing the physics-based ground motion prediction was proposed in this study to minimize the increasing uncertainties in the use of empirical equations. The City of L’Aquila in Italy was used for illustrative purposes due to the availability of data and the historical seismicity of the site. A total of 28 seismic sources were identified in this study located within a 100 km radius from the city. Fault properties such as geometry and location were obtained from the literature, while the fault occurrence rates were obtained using the FiSH Code. A modified time-weakening friction law was proposed to model the seismic energy released by an earthquake. Uncertainties in different rupture scenarios were characterized through the Guttenberg-Richter Relations and the Characteristic Brownian Time Passage. Uncertainties in distances were characterized through probability mass functions, which were used to calculate the ground motion exceedance probabilities. The 1D elastodynamic equation coupled with the Hooke’s law was used to predict the peak ground acceleration (PGA), a measure of the ground shaking level. A hazard curve, which is a plot of PGA and its recurrence, was constructed and compared with the results of the study of Valentini, et al., AGU 100: Advancing Earth and Space Science (2019). The method proposed in this study predicts a higher hazard rates for PGAs less than 0.70 g, which implies that the ground motion was overestimated for very far sources. In contrast, lower hazard curves were observed for PGAs greater than 0.70g which can be attributed to fewer seismic sources considered in this study.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2020, 24, 2; 153-166
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Can architecture be 11-dimensional? The nature of space in the architecture of the digital world era
Autorzy:
Ahmadi, Mosleh
Martyniuk-Pęczek, Justyna
Powiązania:
https://bibliotekanauki.pl/articles/1968576.pdf
Data publikacji:
2021-12-22
Wydawca:
Sopocka Akademia Nauk Stosowanych
Tematy:
Architecture Dimensions
Physics Dimensions
Virtual Dimensions
Mixed-Reality
Theory of Architecture
Opis:
This research aims to explore the development of architectural theories about ‘ar- chitectural dimensions’ and look at architecture as a multidimensional space. It is important to understand that with today's development of virtual reality technolo- gy and through the combination of theories of physics and architecture, a new possibility of creating space has emerged. The arguments are made through inductive reasoning and grounded theory approach. According to the M-theory (one of the contemporaneous leading physics theories), physics suggests a world with 11 dimensions. A question could be asked in this way that should architecture be perceived whether as subjective or objective? Therefore, the theoretical arguments have been focused on three parameters of ‘Subjectivity’, ‘Time’, and ‘Reality’. These parameters are the joint integration of the theories in architecture and quantum physics about dimensions. This representation is justified by the demonstration of identical theoretical attributes that are manifested both in the continuum of ‘quantum architecture’ and ‘quantum realm’. On this basis, the dimensions counted for the status quo of architecture would be 1. ‘Physical and Virtual Creatress of Space’ (Physical/Virtual depth, edge, and ceiling height) or a space of mixed reality (real world merged with virtual reality); 2. ‘Active Architecture’ (corpora- tion of Relative and External time in the creation of Physical/Virtual Dynamism); and 3. ‘Smart Engagement of Experiential Dimensions’ (interactive mental, sensorial, and corporeal engagements based on local and non-local realities). These three factors account for ‘Reality’, ‘Time’, and ‘Subjectivity’, respectively. In the end, ‘Eleven-Dimensional Architecture’ would be introduced. Examples of this kind of architecture could be found in smart architecture with mixed reality settings.
Źródło:
Przestrzeń, Ekonomia, Społeczeństwo; 2020, 18/II; 27-48
2299-1263
2353-0987
Pojawia się w:
Przestrzeń, Ekonomia, Społeczeństwo
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Existence theory for the equations of inelastic material behavior of metals - Transformation of interior variables and energy estimates
Autorzy:
Alber, Hans-Dietmer
Chełmiński, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/748036.pdf
Data publikacji:
1996
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Time-dependent problems
Equations of mathematical physics and other areas of application
Opis:
.
The system of equations, which we study, consists of linear partial differential equations and of nonlinear ordinary differential equations for internal variables. The existence theory for such systems was studied first by the french mathematicians G. Duvaut and J.L. Lions [1]. Next we can find in the literature a work of C. Johnson [2] on a quasi-static problem for a special model. Then in the nineties we can find more works in the domain. This work consists of two parts. In the first part we will classify constitutive equations and therefore we define constitutive equations of monotone type. Moreover by transformation of internal variables we will enlarge the class of constitutive equations, for which we can prove a. global in time existence theorem for large initial data. But there exist models, which are not of monotone type and which we can not transform to monotone type. Therefore we must study such models with other methods. This is the second part, of the work. We write about the energy method for the model of Bodner-Partom.
Źródło:
Mathematica Applicanda; 1996, 25, 39
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Some Details of Statistical Mechanics of Many-Body Systems in the Presence of a Measurable Minimal Length
Autorzy:
Alizadeh, A.
Nozari, K.
Powiązania:
https://bibliotekanauki.pl/articles/1032577.pdf
Data publikacji:
2017-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
quantum gravity phenomenology
statistical physics
many-body systems
minimal measurable length
Opis:
Different approaches to quantum gravity proposal such as string theory, doubly special relativity, and also black holes physics, all commonly address the existence of a minimal measurable length of the order of the Planck length. One way to apply the minimal length is changing the Heisenberg algebra in the phase space which is known as the generalized uncertainty principle. It is essential to apply this feature on the statistical mechanics of many body systems in the presence of a measurable minimal length scale in order to see the roles of this natural cutoff on physical phenomena. In this paper, some details of statistical mechanics of many body systems that have not been studied carefully in literature are studied in the presence of minimal length scale. The issues such as isomerization, the Liouville theorem, virial theorem and equipartition theorem are studied in this setup with details and the results are explained thoroughly.
Źródło:
Acta Physica Polonica A; 2017, 132, 4; 1329-1332
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Some conclusions of chaos and non predicability in physics to theologia naturalis
Autorzy:
Ambrozy, Marián
Powiązania:
https://bibliotekanauki.pl/articles/2157013.pdf
Data publikacji:
2014
Wydawca:
Instytut Studiów Międzynarodowych i Edukacji Humanum
Tematy:
deterministic chaos
theologia naturalis
predictability
Opis:
Deterministic chaos counts among noteworthy fields of natural science. Its truly extraordinary attributes enable not only various interpretations from the point of view of predictability but also interesting consequences from the sphere of theologia naturalis. The situation starts to be interesting, if we figure explication of influence of God on a human through Augustine Aurelius in possible unpredictability in a sense of impossibility to predict future of a physical state on a macro level. Interconnection of both of these theories provides interesting conclusions.
Źródło:
Społeczeństwo i Edukacja. Międzynarodowe Studia Humanistyczne; 2014, 1(13); 69-76
1898-0171
Pojawia się w:
Społeczeństwo i Edukacja. Międzynarodowe Studia Humanistyczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Aristotle’s Solution for Parmenides’ Inconclusive Argument in Physics I.3
Autorzy:
Angioni, Lucas
Powiązania:
https://bibliotekanauki.pl/articles/2016431.pdf
Data publikacji:
2021-12-13
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
Aristotle
sophistical argument
Parmenides
predication
being
Opis:
I discuss the argument which Aristotle ascribes to Parmenides at Physics 186a23–32. I examine (i) the reasons why Aristotle considers it to be eristic and inconclusive and (ii) the solution (lusis) that he proposes against it.
Źródło:
Peitho. Examina Antiqua; 2021, 12, 1; 41-67
2082-7539
Pojawia się w:
Peitho. Examina Antiqua
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Accelerator and detector physics at the Bern medical cyclotron and its beam transport line
Autorzy:
Auger, M.
Braccini, S.
Ereditato, A.
Häberli, M.
Kirillova, E.
Nesteruk, K. P.
Scampoli, P.
Powiązania:
https://bibliotekanauki.pl/articles/147455.pdf
Data publikacji:
2016
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
beam monitoring
medical cyclotrons
particle accelerators
particle detectors
Opis:
The cyclotron laboratory for radioisotope production and multi-disciplinary research at the Bern University Hospital (Inselspital) is based on an 18-MeV proton accelerator, equipped with a specifi cally conceived 6-m long external beam line, ending in a separate bunker. This facility allows performing daily positron emission tomography (PET) radioisotope production and research activities running in parallel. Some of the latest developments on accelerator and detector physics are reported. They encompass novel detectors for beam monitoring and studies of low current beams.
Źródło:
Nukleonika; 2016, 61, 1; 11-14
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Implementation on Visualization of Some Complex Physics Problems Embodied in Difficulty with Interactive Materials for Undergraduates
Autorzy:
Aydin, S.
Genç, H.
Powiązania:
https://bibliotekanauki.pl/articles/1033356.pdf
Data publikacji:
2017-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
02.70.-c
85.30.-z
85.30.De
Opis:
Physical phenomena and the nature of materials require both qualitative and quantitative research to be understood thoroughly. This process often necessitates the use of complicated and expensive equipments. Also in electrical-electronics discipline, especially the nature of semiconductor materials and the behavior of them have a special place. In engineering education, it is often more important for undergraduates to understand the behavior of material and the results of that at the basic level. For this purpose it is sufficient to analyze semiconductor materials with interactive software unlike physics scholars who apply mostly physically to analyze. Understanding the physical properties of applied materials and digitalizing the characteristics of these materials by coding in programming environment maintain its importance. In this context, designing of interactive programs to analyze physical phenomena in electrical-electronics engineering without the need for licensed software has been presented. For this purpose, some semiconductor phenomena involved with electronics engineering have been selected as a pilot and web based 3D Java graphic AWT applications have been designed.
Źródło:
Acta Physica Polonica A; 2017, 131, 1; 74-77
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diagnostyka numeryczna powstawania i struktury strumienia kumulacyjnego z wkładki napędzanej produktami detonacji
Numerical diagnostics of shaped charge jet structure and formation from a liner driven by products of detonation
Autorzy:
Bagrowski, J.
Borkowski, J.
Podgórzak, P.
Jach, K.
Powiązania:
https://bibliotekanauki.pl/articles/234568.pdf
Data publikacji:
2018
Wydawca:
Wojskowy Instytut Techniczny Uzbrojenia
Tematy:
fizyka wybuchu
kumulacja
metody numeryczne
explosion physics
shaped charge jet effect
numerical methods
Opis:
W artykule zaprezentowano zbadane procesy zbiegania się elementów stożkowej wkładki kumulacyjnej do osi symetrii i podziału na części wewnętrzną wchodzącą do strumienia i zewnętrzną pozostającą w zbitku. Element wkładki miał długość komórki numerycznej i był podzielony na 18 warstw prostopadle do tworzącej wkładki. Pokazano występowanie gradientów prędkości wzdłuż części elementów wkładki tworzących strumień – pierwsze wewnętrzne warstwy elementów wkładki uzyskują maksymalne prędkości. W konsekwencji strumień kumulacyjny ma strukturę warstwową, podobnie jak strumień powstający podczas kumulacji wkładek półsferycznych. Jednorodność osiowa strumienia jest funkcją ziarnistości materiału wkładki, w naszym przypadku rozmiarów komórek numerycznych. Wyniki rozwiązań numerycznych zostały porównane z wynikami obliczeń metodą analityczną opartą na modelu PER.
The paper describes the known processes of collapsing of shaped charge conical liner elements to the axis of symmetry and their partition into an internal part creating the jet and an external part remaining in the slug. An element of the liner has the length of a numerical cell and is divided into 18 layers perpendicularly to the liner contour. The existence of velocity gradients along some liner elements creating the jet is shown – the first internal layers of liner elements get the maximal velocities. In consequence the shaped charge jet has a layered structure which is similar to a shaped charge jet produced by half-spherical liner. Axial homogeneity of the jet is a function of liner material granulation and numerical cells dimensions in our case. Results of numerical calculations are compared with results of analytical calculations based on the PER model.
Źródło:
Problemy Techniki Uzbrojenia; 2018, 47, 148; 7-29
1230-3801
Pojawia się w:
Problemy Techniki Uzbrojenia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena skuteczności działania ładunków kumulacyjnych na podstawie rozwiązań numerycznych
Numerical estimation of shaped charges efficiency
Autorzy:
Bagrowski, Jan
Bazela, Rafał
Borkowski, Jacek
Podgórzak, Paweł
Jach, Karol
Powiązania:
https://bibliotekanauki.pl/articles/234621.pdf
Data publikacji:
2019
Wydawca:
Wojskowy Instytut Techniczny Uzbrojenia
Tematy:
fizyka wybuchu
kumulacja
metody numeryczne
physics of explosion
liner collapse effect
numerical methods
Opis:
W artykule przedstawiono oceny maksymalnych głębokości wnikania strumieni kumulacyjnych w stal pancerną w funkcji odległości od podstawy wkładki. Dane – chwilowe współrzędne położeń, mas oraz prędkości elementów strumieni były wynikiem obliczeń numerycznych działania wybranych konstrukcji ładunków kumulacyjnych. Pokazano, iż głębokość krateru jest funkcją dopuszczalnego wydłużenia elementów strumienia oraz ich minimalnej prędkości. Wyniki porównano z danymi doświadczalnymi.
The paper shows the estimations of maximal penetration depths of shaped charge jets in a steel armour as a function of stand-off distance to the liner base. The data – instantaneous coordinates of positions, masses, and velocities of jet elements was received as results of numerical calculations for selected examples of designs of shaped charges. It was shown that the crater’s depth is a function of acceptable maximal extension of jet elements and their minimal velocity. The results were compared with experimental data.
Źródło:
Problemy Techniki Uzbrojenia; 2019, 48, 149; 7-22
1230-3801
Pojawia się w:
Problemy Techniki Uzbrojenia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
World trends in cyclotron developments for nuclear physics and applications
Autorzy:
Baron, E.
Powiązania:
https://bibliotekanauki.pl/articles/148772.pdf
Data publikacji:
2003
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
cyclotron
applications
Opis:
Today, the number of cyclotrons operating in the world largely exceeds 200. The field of uses covers production of radioisotopes for medicine, therapy by neutron and ion beams, nuclear, atomic and solid state physics research, material analysis and radiation damage studies, and production of intense neutron beams for present and future purposes. Despite this diversity, continuing efforts driven by both research laboratories as well as commercial firms result in a series of improvements in the various techniques used in the design and operation of cyclotrons. This paper intends to draw the main directions of evolution in the following issues: injection and extraction systems, beam dynamics (including high intensity issues), magnetic and electric fields computation, as well as existing and possible future applications in medicine, production of energy, neutron spallation sources and transmutation technologies. The question of a possible resurrection of FFAG (Fixed-Field, Alternating Gradient) cyclotrons, a concept invented in the fifties, will be shortly brought up.
Źródło:
Nukleonika; 2003, 48,suppl.2; 3-11
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 430

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies