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Tytuł:
Investigations of metal gaskets for high-pressure joints
Autorzy:
Trojnacki, A.
Krasiński, M.
Szybiński, B.
Powiązania:
https://bibliotekanauki.pl/articles/244507.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
high-pressure closures
metal gaskets
stress-strain analysis
leak tightness
FEM
Opis:
The article deals with the stress-strain analysis and investigations of operating properties of metal high-pressure gaskets. The simplified analytical approach is applied in the examinations of wave-ring gasket and lens-ring gasket. A cylindrical shell of constant mean thickness is introduced to simulate the gaskets. It is assumed that the shell is simply supported at the inner surfaces of the gasket seats. The influence of certain geometric, material and assembly parameters on the strength and leak-tightness of the closures is analytically investigated. Certain selected parameters of the closure are examined versus applied operating pressure for the assumed materials of the gasketed members and fixed several another data of the gaskets. The analysis is carried out in dimensionless variables in order to generalize the results. The region of admissible solutions for the gaskets parameters such as dimensions, applied assembly requirements and operating pressure is determined. The static tensile tests were carried out to determine the real mechanical properties of materials applied for the gaskets and the seats. The analytical solutions are verified by FEM calculations, which take into account the hardening of the material, friction at the surfaces and contact effects. Theoretical considerations are illustrated by numerical examples and compared with the experimental results obtained under assembly conditions with no operating pressure applied to the closures. Some conclusions may be recommended in design procedures of the high-pressure closures with metal gaskets.
Źródło:
Journal of KONES; 2016, 23, 1; 397-404
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stress-strain analysis of metal butt connection with composite propeller blade
Analiz kharakteristik lokal'nogo naprjazhenno-deformirovannogo sostajanija sojedinenija metallicheskogo komlja s kompozitnojj lopast'ju vozdushnogo vinta
Autorzy:
Malkov, I.
Sirovoy, G.
Nepran, I.
Powiązania:
https://bibliotekanauki.pl/articles/791870.pdf
Data publikacji:
2013
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
stress-strain analysis
metal connection
propeller blade
physicomechanical property
physical property
mechanical property
polymer composite
finite element
ANSYS programme
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2013, 13, 4
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methods for in-situ reinforcing of concrete building structures with external reinforcement based on carbon fiber to restore their service able technical state
Autorzy:
Rimshin, V.
Kurbatov, V.
Kuzina, E.
Shubin, L.
Powiązania:
https://bibliotekanauki.pl/articles/2065540.pdf
Data publikacji:
2018
Wydawca:
Politechnika Częstochowska
Tematy:
carbon fiber reinforcement
composite materials
limit state design
stress-strain analysis
włókna węglowe
materiały kompozytowe
stan graniczny
analiza naprężeń i odkształceń
Opis:
In this article, a method is proposed for calculating the reinforcement of concrete ceiling slabs with carbon composite materials based on the finite element model in the computer program SCAD Office PC. This method allows the most complete and accurate representation to be obtained of the structure stress-strain state before and after reinforcement with composite materials. Therefore, it allows high-quality designing and reduces the cost conducting calculations and tests on a large scale. The design values are taken from the initial data, and include conclusions based on the results of analysis of the technical state of the structures and drawings from the calculation section of the CS (reinforced concrete structures).
Źródło:
Budownictwo o Zoptymalizowanym Potencjale Energetycznym; 2018, 7, 2; 7--14
2299-8535
2544-963X
Pojawia się w:
Budownictwo o Zoptymalizowanym Potencjale Energetycznym
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimization of support parameters for reusable mining excavations based on a neuro-heuristic prognostic model
Autorzy:
Babets, Dmytro
Sdvyzhkova, Olena
Dyczko, Artur
Gliwiński, Łukasz
Powiązania:
https://bibliotekanauki.pl/articles/27324371.pdf
Data publikacji:
2023
Wydawca:
Instytut Techniki Górniczej KOMAG
Tematy:
longwall mining
coal seam
geomechanical processes
excavation reuse
jointed rocks
Finite Element Analysis
stress-strain analysis
support parameters
multifactorial analysis
nonlinear optimization
górnictwo
proces geomechaniczny
analiza
optymalizacja
Opis:
This publication delves into geomechanical processes encountered during sequential longwall mining of coal seams, with a unique focus on reusing the conveyor track of the prior longwall as the ventilation pathway for the subsequent longwall. An in-depth geomechanical rationale is provided for the reuse of excavations within jointed rock formations.To ascertain the critical roles played by various support and protective elements at each distinct mining stage, a comprehensive analysis is performed using finite element techniques to delineate thethree-dimensional stress-strain characteristics of the rock mass.Employing an innovative methodology integrating multifactorial analysis, contemporary structural identification algorithms, and a neuro-heuristic approach for predictive mathematical modeling, an integral stability metric for reusable mining excavations isintroduced. Specifically, this metric quantifies the relative preservation of theexcavation's cross-sectional area following its connection to thesecond longwall.Furthermore, the study tackles the challenge of nonlinear optimization through the application of the generalized reduced gradient method (Frank-Wolfe), ultimately deriving the optimal combination of factors that maximizes the preservation of the cross-sectional area for these reusable excavations.
Źródło:
Mining Machines; 2023, 41, 3; 200--211
2719-3306
Pojawia się w:
Mining Machines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical analysis of the stress-strain state of a rope strand with linear contact under tension and torsion loading conditions
Autorzy:
Kalentev, E.
Václav, S.
Božek, P.
Tarasov, V.
Korshunov, A.
Powiązania:
https://bibliotekanauki.pl/articles/102692.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
numerical analysis
stress-strain state
rope
Opis:
The paper presents the results of a numerical analysis of the stress-strain state of a rope strand with linear contact under tension and torsion loading conditions. Calculations are carried out using the ANSYS software package. Different approaches to calculation of the stress-strain state of ropes are reviewed, and their advantages and deficiencies are considered. The analysis of the obtained results leads us to the conclusion that the proposed method can be used in engineering calculations.
Źródło:
Advances in Science and Technology. Research Journal; 2017, 11, 2; 231-239
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical analysis of the deep drawing process including the history of stress and strain
Autorzy:
Kaldunski, P.
Powiązania:
https://bibliotekanauki.pl/articles/280806.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
deep drawing
modeling
numerical analysis
FEM
stress history
strain history
Opis:
This paper discusses the results of a numerical study of circular cup drawing of steel sheets using finite element method. The drawing process is considered as a geometrical and physical nonlinear problem with unknown boundary conditions in the contact area of the system, such as the tool and the workpiece. The updated Lagrangian description is used to characterize these nonlinear phenomena on a typical incremental step time. Numerical results are obtained using an explicit method in Ansys/Ls-Dyna program. The constitutive Cowper-Symonds material model with linear hardening strain to predict material plasticity is used. The results of implementation of stresses and strains from a blanking operation flat disc of a sheet of metal for deep-drawing process are presented. After the blanking process simulation, an implicit springback analysis is performed. Then a numerical analysis of cup forming from this flat disc plate was carried out. The analysis results are compared with one another through reading of the sheet thickness in several characteristic points and the overall height of the product.
Źródło:
Journal of Theoretical and Applied Mechanics; 2018, 56, 3; 781-792
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Takotsubo cardiomyopathy in the case of 72-year-old teacher after work-related psychological stress. Evolution of left ventricular longitudinal strain – Delayed but complete recovery in automated function imaging (AFI)
Autorzy:
Wierzbowska-Drabik, Karina
Marcinkiewicz, Andrzej
Hamala, Piotr
Trzos, Ewa
Lipiec, Piotr
Kurpesa, Małgorzata
Kręcki, Radosław
Plewka, Michał
Kasprzak, Jarosław D.
Powiązania:
https://bibliotekanauki.pl/articles/2161915.pdf
Data publikacji:
2017-06-19
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
professional activity
occupational stress
transthoracic echocardiography
takotsubo cardiomyopathy
longitudinal strain
AFI analysis
Opis:
Takotsubo cardiomyopathy (TC) is related to a transient systolic dysfunction of left ventricle (LV), accompanied by clinical and electrocardiographic symptoms of myocardial ischemia in the absence of hemodynamically significant coronary artery disease. Takotsubo cardiomyopathy is usually provoked by a psychologically or/and physically stressful event which may be related to occupational activities. Although visually assessed evolution of LV function is well documented, the data concerning strain changes is sparse and various patterns of deformation abnormalities are suggested. We have described a 72-year-old woman with chest pain related to a lecture given at the meeting of the Senior University, fulfilling all the Mayo Clinic criteria of the TC. The longitudinal strain analysis with automated function imaging (AFI) documented severe impairment and stepwise recovery of regional and global LV contractility. The case described confirms that accurate diagnosis, treatment and documenting of functional improvement in takotsubo cardiomyopathy may enable the return to occupational activities even for elderly persons. Int J Occup Med Environ Health 2017;30(4):681–683
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2017, 30, 4; 681-683
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Separation of isochromatics and isoclinics phasemaps for the photoelastic technique with use phase shifting and a large number of high precision images
Autorzy:
Magalhaes, C. A.
Neto, P. S.
Magalhaes Jr P. A., A.
de Barcellos, C. S.
Powiązania:
https://bibliotekanauki.pl/articles/220820.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
photoelasticity
metrology
stress analysis
strain measurement
optical measurement systems
optical interferometry
experimental techniques
Opis:
Digital photoelasticity is an important optical metrology follow-up for stress and strain analysis using full-field digital photographic images. Advances in digital image processing, data acquisition, procedures for pattern recognition and storage capacity enable the use of the computer-aided technique in automation and facilitate improvement of the digital photoelastic technique. The objective of this research is to find new equations for a novel phase-shifting method in digital photoelasticity. Some innovations are proposed. In terms of phaseshifting, only the analyzer is rotated, and the other equations are deduced by applying a new numerical technique instead of the usual algebraic techniques. This approach can be used to calculate a larger sequence of images. Each image represents a pattern and a measurement of the stresses present in the object. A decrease in the mean errors was obtained by increasing the number of observations. A reduction in the difference between the theoretical and experimental values of stresses was obtained by increasing the number of images in the equations for calculating phase. Every photographic image has errors and random noise, but the uncertainties due to these effects can be reduced with a larger number of observations. The proposed method with many images and high accuracy is a good alternative to the photoelastic techniques.
Źródło:
Metrology and Measurement Systems; 2013, 20, 1; 127-138
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Numerical and Experimental Analysis of Ballizing Process of Steel Tubes
Autorzy:
Dyl, T.
Powiązania:
https://bibliotekanauki.pl/articles/356697.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
numerical analysis
strain and stress state
burnishing (surface plastic forming)
ballizing process
steel tubes
Opis:
This paper presents chosen results of experimental and numerical research of ballizing process of the steel tubes. Ballizing process is a method of burnishing technology of an internal diameter by precisely forcing a ball through a slightly undersized premachined tubes. Ballizing process is a fast, low-cost process for sizing and finishing tubes. It consists of pressing a slightly oversized ball through an unfinished tube to quickly bring the hole to desired size. The ball is typically made from a very hard material such as tungsten carbide or bearing steel. Ballizing process is by cold surface plastic forming of the surface structure, thereby leaving a layer of harder material and reducing its roughness. After theoretical and experimental analysis it was determined that the smaller the diameter of the balls, the bigger intensity of stress and strain and strain rate. The paper presents influence of ballizing process on the strain and stress state and on the surface roughness reduction rate of the steel tubes.
Źródło:
Archives of Metallurgy and Materials; 2017, 62, 2A; 807-814
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biomechanical Loads and Subjective Stress Exposure to Lumber Graders in Sawmill Industry
Autorzy:
Jones, T.
Kumar, S.
Powiązania:
https://bibliotekanauki.pl/articles/90791.pdf
Data publikacji:
2011
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
job analysis
lumber graders
wood product manufacturing
repetitive strain
upper extremity
physical and psychophysical stress
Opis:
The aim of this study was to determine biomechanical loads and subjective stresses on lumber graders and associated morbidity in a high risk and repetitive sawmill occupation. The exposures of all 29 male sawmill worker volunteers were recorded. Motion and posture were studied with electrogoniometers, muscle loads were recorded with surface electromyography, and psychophysical stresses were assessed with subjective responses. Fifty-nine percent of the participants reported greater than moderate discomfort in their taskdominant upper extremity. Job performance required an average range of motion of 44º, 21º, and 52º in flexion/extension, radial/ulnar deviations, and pronation/supination respectively. It also required an average of 9% maximum voluntary contraction force and was repeated an average of 34 times/min. This repetitive exertion over an 8-h shift was deemed to be a significant risk factor associated with prevalent upper extremity morbidity.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2011, 17, 1; 87-97
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study on the State of Internal Stress and Strain of TATB-based Polymer Bonded Explosive Using Strain Markers and Cone-Beam Computed Tomography
Autorzy:
Dai, B.
Lan, L.-G.
Zhang, W.-B.
Tian, Y.
Powiązania:
https://bibliotekanauki.pl/articles/358613.pdf
Data publikacji:
2017
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
technology of materials
testing and analysis
compression molding
polymer bonded explosive
stress state
strain ellipsoid
X-ray tomography
Opis:
Precise measurement of the inner structural strain of polymer bonded explosive (PBXs) granules during compression molding is highly desirable in order to investigate the inner stress distribution field and its underlying generation mechanism, with the aim of improving the stress distribution uniformity. In this contribution, TATB-based (1,3,5-triamino-2,4,6-trinitrobenzene) PBX granules were formulated and the stress-strain state of the PBX granules during the warm molding process was analyzed. Strain markers were implanted at different locations and the deformation characteristics and regularity of the embedded spherical strain markers were obtained by X-ray micro-tomography. Thus the local strain states at different locations could be obtained, and the local stress state could be deduced. The results showed that axisymmetric deformation occurred in all of the strain markers, where the flat strain ellipsoids were mainly compressed uni-axially. In the central region, the stress was mainly in an axial direction, and the shear force was small. Not only axial stresses, but also large shear stresses in the surrounding region of the cylindrical grains were present. The stress gradient in the central region was greater than that in the surrounding region. The stress was greater in the surrounding region because this region was squeezed by the mold. The maximum strain degree was 44.8% larger than the minimum strain degree. The local stress increment in each region was quantified. The stress increments of the three axes were in the range 14.2-19.5 MPa. This study examined the feasibility of evaluating the inner stress–strain state of PBX granules in a quantitative manner, which is significant in determining the inner strain and stress distribution in PBX granules during the molding process.
Źródło:
Central European Journal of Energetic Materials; 2017, 14, 3; 688-707
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mechanical response at peri-implant mandibular bone for variation of pore characteristics of implants: A Finite Element Study
Autorzy:
Sarkar, Sulagna
Sahu, Tikeshwar Prasad
Datta, Arijit
Chandra, Nimesh
Chakraborty, Arindam
Datta, Pallab
Majumder, Santanu
Chowdhury, Amit Roy
Powiązania:
https://bibliotekanauki.pl/articles/307131.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
implant stomatologiczny
uszczelnianie
FEM
porous dental implant
pore size
percentage porosity
bone-implant interface
finite element analysis
stress and strain
Opis:
In this paper, the mechanical response of generic dental implants having calculated porosities with varying pore-sizes has been evaluated. The purpose of this study was to compare the developed stress-strain of designed porous implants (i.e., stress at the implant and strain at the peri-implant bone) with that of the non-porous implant. Methods: 3D model of a mandible was prepared from CT scan data and nine generic dental implant models have been designed having 10%, 20%, and 30% porosity with 500, 700, and 900 micron pore size along with a non-porous model for carrying out FE analyses. First, failure analyses of implants, under a biting force of 250 N have been performed. Next, the remaining implants have been further evaluated under average compressive chewing load of 100 N, for mechanical responses at bone-implant interface. Results: Von Mises strain at the peri-implant mandibular bone increases with the increase in percentage porosity of the implant material and maximum implant stress remained much below the yield stress level. Conclusion: Implant stiffness and compressive strength vary as a function of porosity and pore size. Strain obtained on the peri-implant bone is sufficient enough to facilitate better bone growth with the 700 micron pore size and 30% porosity, thus reducing the effect of stress shielding.
Źródło:
Acta of Bioengineering and Biomechanics; 2019, 21, 2; 83-93
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stress analysis of the single adhesive lap joints with plastic deformation of connected materials
Analiza naprężeń jednozakładkowych połączeń klejowych z plastycznym odkształceniem łączonych materiałów
Autorzy:
Zielecki, K.
Witek, L.
Stachowicz, F.
Powiązania:
https://bibliotekanauki.pl/articles/945984.pdf
Data publikacji:
2017
Wydawca:
Politechnika Rzeszowska im. Ignacego Łukasiewicza. Oficyna Wydawnicza
Tematy:
single adhesive lap joint
stress analysis
finite element method
plastic strain
zakładkowe połączenie klejowe
analiza naprężeń
metoda elementów skończonych
odkształcenie plastyczne
Opis:
In this work the results of numerical stress analysis of single adhesive lap joints were presented. In the analysis both the linear-elastic and the elastic-plastic models of adherends materials were considered. Plastic deformation of adherends has a significant influence on the stress state in the adhesive layer. In the first part of the work the mechanical properties of adherends material obtained in experimental investigations were presented. In next part of the study the numerical model of joint was presented. The results of static analysis using the finite element method showed that in the case of joining materials with low value of yield stress the plastic deformation occurs in adherend at load much smaller than destructive force of the joint. In this kind of joints the plastic deformation of adherend has an influence on rapid stress increase in adhesive layer, in final stage of loading. This phenomenon causes a decrease of load capacity of single adhesive lap joints of elasticplastic materials.
W pracy przedstawiono wyniki numerycznej analizy naprężeń jednozakładkowych połączeń klejowych. Dla łączonych blach zastosowano dwa modele materiału: liniowo-sprężysty oraz sprężysto-plastyczny. Odkształcenie plastyczne materiału klejonego wywiera znaczący wpływ na stan naprężeń w warstwie kleju. W pierwszej części pracy przedstawiono właściwości mechaniczne materiału łączonego, które otrzymano w badaniach eksperymentalnych. W następnej części pracy przedstawiono model numeryczny połączenia. Wyniki analizy statycznej metodą elementów skończonych wykazały, że w przypadku łączenia materiałów charakteryzujących się niską wartością granicy plastyczności odkształcenie plastyczne występuje w materiale łączonym przy obciążeniu znacznie mniejszym od siły niszczącej połączenie. Zjawisko to powoduje obniżenie nośności jednozakładkowych połączeń klejowych materiałów sprężysto-plastycznych.
Źródło:
Zeszyty Naukowe Politechniki Rzeszowskiej. Mechanika; 2017, z. 89 [295], 2; 121-130
0209-2689
2300-5211
Pojawia się w:
Zeszyty Naukowe Politechniki Rzeszowskiej. Mechanika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design Analysis of Closed Vessel for Power Cartridge Testing
Autorzy:
Parate, Bhupesh Ambadas
Chandel, Sunil
Shekhar, Himanshu
Powiązania:
https://bibliotekanauki.pl/articles/403278.pdf
Data publikacji:
2019
Wydawca:
Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
Tematy:
closed vessel
design analysis
disruptor
factor of safety
finite element method (FEM)
internal pressure
power cartridge
stress
strain and water-jet disruptor
Opis:
This paper discusses the design analysis of closed vessel (CV) for power cartridge application in water-jet disruptor. In this article, various design theories are presented in which the vessel is subjected to internal pressure. CV is a kind of pressure vessel utilized to evaluate the performance of power cartridge used for water-jet application. It is a test vessel which generates pressure - time profile by burning the propellant. Energy derived from burning of the propellant of power cartridge aids in neutralizing Improvised Devices (IED's). This energy creates high water-jet plume in the disruptor. In order to evaluate various performance parameters of the cartridge, CV design plays a vital role in the research and development activities, including, development, life trials, production, lot proof trials and life extension / life revision trials. CV is one of the methodologies / techniques from which energy generated is measured in terms of the maximum pressure (Pmax) and the time to maximum pressure (TPmax). This paper also discusses about various design aspects using the finite element method (FEM) and their comparative results with different design theories. In the light of these theoretical, numerical, and experimental works, it was recommended that octahedral stress theory or van Mises theory should be used for vessel design. This satisfies the designer requirements. FEM analysis tool helps in reducing time & development cost.
Źródło:
Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa; 2019, 10, 1 (35); 25-48
2081-5891
Pojawia się w:
Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical-Experimental Analysis of Plastic Flow Beginning Phase Round the Hole in the Thin Shield Under Tension
Autorzy:
Bućko, S.
Jodłowski, H.
Trzebicki, M.
Powiązania:
https://bibliotekanauki.pl/articles/387063.pdf
Data publikacji:
2012
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
identyfikacja odkształceń plastycznych
interferencja optyczna
koncentracja naprężeń
badania eksperymentalne
analiza MES
plastic strain identification
optical interference
stress concentration
experimental research
FEM analysis
Opis:
The method of recognition of plastic strains with the use of optical interference was characterized in the work. The idea of the method was shown on the example test for 15HM steel tension. The results of experimental testing of plastic strains initiation in the thin shield with opening of O20 diameter under tension, especially considering round the hole zone were presented in further part of the work. The experiment was carried out with the use of method mentioned above. In the experiment the stresses initializing plastic deformations and the shape of plastic zone were determined. The stress state analysis in the hole zone in the specimen under tension was realized with the use of finite element method. The calculations were done for two significantly different hole diameters. The results of FEM calculations allow for certification that for the holes of diameters significantly bigger than the shield thickness round the hole plane stress state occurs.
Źródło:
Acta Mechanica et Automatica; 2012, 6, 1; 21-25
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
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