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Tytuł:
Optimisation of osteosynthesis positioning in mandibular body fracture management using finite element analysis
Autorzy:
Daqiq, Omid
Roossien, Charlotte C.
Wubs, Friederik W.
Bos, Rudolf R.M.
van Minnen, Baucke
Powiązania:
https://bibliotekanauki.pl/articles/24987661.pdf
Data publikacji:
2023-06-26
Wydawca:
Gdański Uniwersytet Medyczny
Tematy:
Mandibular body fracture
Finite element analysis (FEA)
Polymeric model testing
Mandibular body height
Miniplate positioning
Opis:
Background: This proof of principle study aims to investigate the applicability of finite element analysis (FEA) in Oral and Maxillofacial (OMF) surgery, by studying the effect of mandibular body height and osteosynthesis positioning on unilateral mandibular body fractures based on Champy’s technique. Material and methods: Mandibles made of polyurethane foam (Synbone®), with heights of 18, 14, and 10 mm were used to create a FEA model with a unilateral straight-line fracture, fixated with a standard commercially available 6-hole 2 mm titanium miniplate. Two different FEA programs were used for the comparison, namely: Solidworks and Comsol Multiphysics. The FEA outcomes were compared with a series of mechanical tests with polymeric models fixed in a customised device and loaded onto a mechanical test bench. Results: First, the study illustrated that the optimal plate position appeared to be the upper border. Second, lower mandibular height increases instability and requires a stronger osteosynthesis system. Conclusions: FEA’s and polymeric model testing outcomes of unilateral non-comminuted fractures were highly comparable with current opinions of mandibular fracture management. The promising outcome of this study makes it worthwhile to do more extensive analysis in order to determine whether FEA alone is sufficient for optimisation of fracture management.
Źródło:
European Journal of Translational and Clinical Medicine; 2023, 6, 2; 10-25
2657-3148
2657-3156
Pojawia się w:
European Journal of Translational and Clinical Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The structure of the Silesian Beskid Block in the Vistula River source area in the Western Outer Carpathians (southern Poland)
Autorzy:
Sikora, Rafał
Powiązania:
https://bibliotekanauki.pl/articles/24201046.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
Lineaments
hidden fracture zone
structural analysis
Szczyrk Anticline
Silesian Beskid Block
Outer Carpathians
Opis:
This paper presents new results of a detailed structural analysis of the bedrock of the Vistula source area within the Silesian Beskids (Outer Western Carpathians, S Poland). The bedrock of the study area is composed of the Upper Cretaceous flysch series of the Upper Godula Beds and Lower Istebna Beds. The study area is located on the southern limb of the Szczyrk Anticline within the Silesian Beskid Block. The research is based on cartographic field work and remote sensing analysis of a digital elevation model from LiDAR data. The structural analyses were supported by the extraction of the topolineaments and their spatial analysis. The results presented show that the monoclinal bedrock structure of the study area can be characterized by a systematic joint pattern, which determined the existence of faults and fault zones. Moreover, detailed analyses show differences in fracturing of the sedimentary strata and the existence of hidden fracture zones, not visible in the previous map view. Most of the faults are related to an orthogonal joint system, whereas the transverse and longitudinal faults are connected with fold and thrust structures that are exposed in outcrops and reflected in the topography. Kinematic analysis shows that the NW–SE-trending transverse faults underwent dextral movements, while the ENE–WSW-trending longitudinal faults recorded sinistral displacements. Furthermore, older strike-slip and oblique-slip displacements along faults were overprinted by normal dip-slip faulting. The new tectonic and relief data show no existence of the Gościejów Syncline in the northern part of the study area, which was depicted on previous maps. In conclusion, normal faulting and damage of the bedrock along fracture zones are interpreted as being related to the posttectonic, gravitational collapse of the rock massif. Its detailed recognition is very important for the further study of relationships between bedrock structure and mass movement characteristics, such as the geometry and kinematics of landslides.
Źródło:
Annales Societatis Geologorum Poloniae; 2023, 93, 2; 137--163
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A two-dimensional finite element analysis of the influence of fracture gap and angle on bone healing process
Autorzy:
Prochor, Piotr
Taraszewicz, Patrycja
Powiązania:
https://bibliotekanauki.pl/chapters/2215580.pdf
Data publikacji:
2022
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
numerical analysis
bone
fracture
secondary healing
evaluation algorithm
Opis:
Over the years, many mechanoregulation concepts of fracture healing have been developed. They all assume that higher values of the stimulus in the fracture gap cause the formation of a fibrous tissue and only lower values can lead to the formation of bone tissue. A literature review of the numerical evaluation of bone fracture healing has revealed some shortcomings in the existing studies. Scientists often focus on only one of the three phases of fracture healing. In addition, studies are often carried out with the use of only transverse fractures. The aim of the study is to develop an algorithm for the numerical evaluation of bone fracture healing, which can be used for both transverse as well as oblique fractures. To conduct the research, the authors proposed an algorithm that considers all phases occurring in secondary healing: 1 – hematoma formation, 2 – tissue differentiation, 3 – bone tissue remodeling. Appropriate CAD models of simplified fracture were designed that additionally considered two variables: fracture angle (from 0° to 45°) and fracture gap (from 2.5 mm to 10.0 mm). Axial loading was used in order to generate mechanobiological stimulus. The obtained results presented a significant influence of the analyzed variables on the studied process. This proved that the designed algorithm can be used to speed up the treatment process and enable designing a more effective rehabilitation procedure for an individual patient.
Źródło:
Advances in biomedical engineering; 31-43
9788367185400
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of admixtures on the performance of soundless chemical demolition agents and implications for their utilization
Autorzy:
Maneenoi, Nattamon
Bissen, Raphael
Chawchai, Sakonvan
Powiązania:
https://bibliotekanauki.pl/articles/2201389.pdf
Data publikacji:
2022
Wydawca:
Główny Instytut Górnictwa
Tematy:
SCDA
Portland cement
chemical accelerators
viscosity enhancing agents
fracture onset
cost analysis
cement portlandzki
przyspieszacze chemiczne
środki zwiększające lepkość
początek złamania
analiza kosztów
Opis:
Soundless Chemical Demolition Agents (SCDAs) are an environmentally friendly and safer alternative to traditional rock fragmentation methods. Admixtures are used to change the rheological properties and performance of SCDAs. This study aimed to investigate the effect of various concentrations of chemical accelerators (chloride salts) and viscosity enhancing agents (VEAs: Xanthan gum, Guar gum, and Gellan gum) on the fracture onset compared to an unmodified SCDA (BRISTAR 100®). All experiments were conducted on Portland Type 1 (OPC 1) cement blocks. The flowability of the mixtures was determined by mini-slump tests. Results show that 4wt% MgCl2 and 3wt% CaCl2 have accelerated the fracture onset by 47.4% and 61.2%, respectively. VEAs have a decelerating effect, which is mitigated by the addition of the aforementioned chloride salts. Combining 4wt% MgCl2 with 0.2wt% Xanthan gum reduced the fracture onset time by 66.8%. A cost analysis shows that the initial price of the SCDA mainly determines a potential cost reduction by using admixtures. For a low-cost SCDA, the focus is likely to shift to saving time. This study can serve as a basis for future studies to further improve performance and cost as well as diversify the range of applications for SCDAs.
Źródło:
Journal of Sustainable Mining; 2022, 21, 2; 93--111
2300-1364
2300-3960
Pojawia się w:
Journal of Sustainable Mining
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Finite Element Analysis Of Adolescent Mandible Fracture Occurring During Accidents
Autorzy:
Żmudzki, J.
Chladek, G.
Panek, K.
Lipiński, P.
Powiązania:
https://bibliotekanauki.pl/articles/352291.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
mandible fracture
disocclusion state
finite element analysis
critical blow force
Opis:
The paper aims was assessing risks of mandible fractures consequent to impacts or sport accidents. The role of the structural stiffness of mandible, related to disocclusion state, was evaluated using the finite element method. It has been assumed, that the quasi-static stress field, due to distributed forces developed during accidents, could explain the common types of mandibular fractures. Mandibular condyles were supposed jammed in the maxillary fossae. The force of 700 N, simulating an impact on mandible, has been sequentially applied in three distinct areas: centrally, at canine zone and at the mandibular angle. Clinically most frequent fractures of mandible were recognized through the analysis of maximal principal stress/strain fields. It has been shown that mandibular fracture during accidents can be analyzed at satisfactory level using linear quasi-static models for designing protections.
Źródło:
Archives of Metallurgy and Materials; 2020, 65, 1; 65-72
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Finite element analysis of mini-plate stabilization of human mandible angle fracture – a comparative study
Autorzy:
Wądołowski, Piotr
Krzesiński, Grzegorz
Gutowski, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/27324127.pdf
Data publikacji:
2020
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
finite element analysis
maxillofacial surgery
mandibular angle fracture
miniplate osteosynthesis
contact mechanics
analiza elementów skończonych
chirurgia szczękowo-twarzowa
złamanie kąta żuchwy
osteosynteza minipłytkowa
mechanika kontaktowa
Opis:
Purpose: The purpose of this study was to analyze three patterns of mandible angle fracture treatment by means of the finite element analysis. Methods: Investigation has been based on the mandible geometry reconstructed with use of hospitalized patient CT data. The KLS Martin mini-plates with corresponding screws were used to establish proper fracture stabilization. Models were run assuming isotropic and elasto-plastic material properties of connecting devices and cortical bone. The main masticatory muscles and artificial temporomandibular joint have been incorporated to assure mandible physiological movement. The gage loading has been applied in three different locations to cover wider range of possible mastication loading cases during daily routine. A different contact conditions have been applied to the fracture plane to simulate both load bearing and sharing behaviors. Prepared FEM models reflect the most frequently used surgery’s approaches to mandible angle fracture treatment. A specific nomenclature has been introduced to describe particular model. The tension plate, with one connecting mini-plate, two-point fixation and combined fixation, both using two mini-plates respectively. Results: Performed analysis allowed for a detailed estimation of the mini-plate connection response under the applied gauge loading. The equivalent stress within the mini-plates and surrounding cortical bone have been compared between all models. Regarding the fracture plane, the contact status and pressure have been considered. Conclusions: The combined fixation model, acting as a biplanar fastener system, presents the highest flexibility and connection efficiency.
Źródło:
Acta of Bioengineering and Biomechanics; 2020, 22, 3; 105--116
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimization of process parameters of friction stir welded AA5082-AA7075 butt joints using resonance fatigue properties
Autorzy:
Kumar, G.
Kumar, R.
Powiązania:
https://bibliotekanauki.pl/articles/200299.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
friction stir welding
dissimilar Al welding
resonance fatigue analysis
fracture surface analysis
ANOVA
Opis:
In this work, experiments were carried out to quantify the behaviour of friction stir welded (FSW) AA5082-AA7075 butt joints under tensile loading and completely reversed fatigue loading. Different samples were prepared to identify optimum tool rotational and travel speeds to produce FSW AA5082-AA7075 butt joints with the maximum fatigue life. ANOVA was performed, which confirmed that both tool speed nad tool rotation speed affect the tensile strength of the weld. The samples exhibit a considerable difference in their fatigue life and tensile strenght. This difference can be accounted to the presence of welding defects such as surface defects and porosity. S-N curve plotted for the sample shows a significantly high fatigue life at the lower stress ranges. Fracture surfaces were also analysed under scanning electron microscope (SEM). Study of the fracture surface of the sample that failed under fatigue loading showed that the surface was mainly divided in two zones. The first zone was the area of fatigue crack growth where each stress cycle, slowly and gradually, helped in the growth of crack. The second zone was the region of fast fracture where the crack growth resulted in the failure of the joint instantaneously. The fracture surface study of the sample that failed under tensile loading showed that the mode of failure was ductile in nature.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2020, 68, 1; 99-108
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Morphology of Impact Fracture Surfaces in Manganese Cast Steel Modified by Rare Earth Elements
Autorzy:
Kasińska, J.
Powiązania:
https://bibliotekanauki.pl/articles/946876.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cast steel
modification
REM
impact strength
fracture analysis
staliwa
modyfikacja
siła uderzenia
pęknięcia
Opis:
The morphology of G20Mn5 specimens made of non-modified and rare earth metals (REM) modified cast steel was investigated. Molten metal was treated with a cerium-rich mischmetal contain 49.8% Ce, 21.8% La, 17.1% Nd, 5.5% Pr and 5.35% other rare earth metals making up the balance. The melting, quenching (920°C/water) and tempering (720°C/air) were performed under industrial conditions. Analysis included G20Mn5 cast steel fracture specimens subjected to Charpy V-notch impact testing at 20°C, -30°C and -40°C. The purpose of the analysis was to determine the influence of REM on the microstructure and mechanical properties of G20Mn5 cast steel and the REM effect on the morphology, impact strength and character of the fracture surfaces. In addition, a description of the mechanism by which fracture occurred in the two materials was proposed. The author demonstrated the beneficial effects of adding REM to molten steel, manifested by a 20 - 40% increase in impact toughness, depending on test temperature, as compared to the non-modified cast steel. Important findings included more than 100% increase in impact strength in comparison with the required impact toughness of 27J at -40C for heat treated steels (EN 10213).
Źródło:
Archives of Foundry Engineering; 2020, 20, 2; 89-94
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mechanical properties and fracture analysis of AlCu4MgSi alloy ingots obtained by horizontal continuous casting
Autorzy:
Nuckowski, P. M.
Wróbel, T.
Powiązania:
https://bibliotekanauki.pl/articles/352196.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
AlCu4MgSi alloy
horizontal continuous casting
fracture analysis
mechanical properties of ingots
aluminum
Opis:
The article presents the results of research concerning AlCu4MgSi alloy ingots produced using horizontal continuous casting process under variable conditions of casting speed and cooling liquid flow through the crystallizer. The mechanical properties and structure of the obtained ingots were correlated with the process parameters. On the basis of the obtained results, it has been shown that depending on the cooling rate and the intensity of convection during solidification, significant differences in the mechanical properties and structure and of the ingots can occur. The research has shown that, as the casting speed and the flow rate of the cooling liquid increase, the hardness of the test samples decreases, while their elongation increases, which is related to the increase of the average grain size. Also, the morphology of the intermetallic phases precipitations lattice, as well as the centerline porosity and dendrite expansion, significantly affect the tensile strength and fracture mechanism of the tested ingots.
Źródło:
Archives of Metallurgy and Materials; 2019, 64, 1; 113-118
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical investigation of mechanical behavior of cracked cruciform specimens in aluminum alloy 6082-T6 subjected to different biaxial loading conditions
Autorzy:
Khelil, Foudil
Aour, Benaoumeur
Talha, Abderrahim
Benseddiq, Noureddine
Powiązania:
https://bibliotekanauki.pl/articles/281224.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
fracture mechanics
6082-T6 aluminum alloy
cruciform specimen
finite element analysis
stress intensity factor
T-stress
biaxiality
Opis:
Analysis of cracked cruciform specimens under biaxial loading conditions is very important and closer to reality in the study of behavior of marine, naval, aeronautical and railway structures. The aim of this work is to examine the evolution of fracture parameters in a combined mixed mode of an aluminum alloy A6082-T6 cruciform specimen as a function of the biaxial loading with different ratios. To this end, the effects of main parameters, such as load ratio, crack length, crack orientation and non-proportional loading coefficient have been analyzed and discussed in order to highlight fracture toughness of the studied material. The results show that the finite element method is a useful tool for calculation of crack characteristics in the mechanics of biaxial fracture. According to the obtained results, a non-proportional evolution of the fracture parameters, namely, the SIFs KI and KII , T-stress, and the biaxiality parameter was observed. Indeed, the latter depends considerably on the crack length, the angle of crack orientation and the applied biaxial loading. Detailed concluding remarks are presented at the end of this work.
Źródło:
Journal of Theoretical and Applied Mechanics; 2019, 57, 4; 1021-1037
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Fatigue Fracture Study on TDCB Aluminum Foam Specimen of Type Mode III Bonded with Adhesive
Autorzy:
Lee, J. H.
Cho, J. U.
Powiązania:
https://bibliotekanauki.pl/articles/356731.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
aluminum foam
fatigue fracture
fatigue analysis
load
Mode III type
specimen thickness
Opis:
This paper studies the characteristics of junction structure of closed-cell type aluminum foam, which is generally used as a shock absorber. TDCB specimens were designed for mode III type with thickness as a variable and performed a fatigue experiment on them by thickness. As the result, the load value of all specimens peaks under 0 to 25 cycles and decreases as the cycles increase. As the specimen thickens by 10 mm, the maximum load value is 1.2 times. When the thickness increases by 20 mm, the maximum value increases by 1.5 times. This study result can be utilized by investigating the mechanical characteristics of TDCB specimens for mode III type under fatigue loading conditions systematically and efficiently.
Źródło:
Archives of Metallurgy and Materials; 2017, 62, 2B; 1359-1362
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fixation of distal fibular fractures: A biomechanical study of plate fixation techniques
Autorzy:
Marvan, J.
Horak, Z.
Vilimek, M.
Horny, L.
Kachlik, D.
Baca, W.
Powiązania:
https://bibliotekanauki.pl/articles/306556.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
analiza FEM
osteosynteza
złamanie kości
fibular fracture
finite element analysis
osteosynthesis
fracture fixation
fibula
Opis:
Ankle fractures are complex injuries with variable prognoses that depend upon many factors. The aim of the treatment is to restore the ankle joint biomechanical stability with maximum range of motion. Most ankle fractures are fibular fractures, which have a typical oblique fracture line in the distal fibula located in the area of the tibiofibular syndesmosis. The aim of this study was to simulate numerically several fixation techniques of the distal fibular fractures, evaluate their stability, determine their impact on surrounding tissue load, and correlate the results to clinical treatment experience. The following three models of fibular fracture fixation were used: (a) plate fixation with three screws attached above/below and lag screws, (b) plate fixation with two screws attached above/below and lag screws, and (c) three lag screws only. All three fracture fixation models were analyzed according to their use in both healthy physiological bone and osteoporotic bone tissue. Based on the results of Finite Element Analysis for these simulations, we found that the most appropriate fixation method for Weber-B1 fibular fractures was an unlocked plate fixation using six screws and lag screws, both in patients with physiological and osteoporotic bone tissue. Conversely, the least appropriate fixation method was an unlocked plate fixation with four screws and lag screws. Although this fixation method reduces the stress on patients during surgery, it greatly increased loading on the bone and, thus, the risk of fixation failure. The final fixation model with three lag screws only was found to be appropriate only for very limited indications.
Źródło:
Acta of Bioengineering and Biomechanics; 2017, 19, 1; 33-39
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Gięcie na zimno wyrobów gorącowalcowanych
Autorzy:
Marcinczak, K.
Powiązania:
https://bibliotekanauki.pl/articles/129170.pdf
Data publikacji:
2017
Wydawca:
PWB MEDIA Zdziebłowski
Tematy:
gięcie na zimno
gięcie punktowe
gięcie rolkowe
pękanie kruche
naprężenie własne
analiza numeryczna
metoda elementów skończonych
cold bending
point bending
roll bending
brittle fracture
residual stress
numerical analysis
finite element method
Opis:
Przedstawiono zagadnienie gięcia punktowego i rolkowego na zimno dwuteowych kształtowników stalowych. Przeanalizowano konsekwencje, jakie niesie ze sobą plastyczne odkształcenie stali na zimno. Za pomocą analiz numerycznych wyznaczono naprężenia pozostałe po procesie gięcia na zimno w technologii punktowej i rolkowej.
The issue of cold bending process of hot rolled sections was presented. Two technologies (point and continuous cold bending) were explained. The consequences of cold bending were analyzed. Using numerical analysis the stresses after cold bending were obtained.
Źródło:
Builder; 2017, 21, 8; 84-87
1896-0642
Pojawia się w:
Builder
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of Indentation Fracture Toughness (KIC) and Weibull Parameters of 0.25Li2O.2SiO2-0.75BaO.2SiO2 Glass-Ceramic
Autorzy:
Ertuğ, B.
Çetiner, B. R.
Gökçe, H.
Erkmen, Z. E.
Öveçoğlu, M. L.
Powiązania:
https://bibliotekanauki.pl/articles/351907.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
lithium barium silicate glass-ceramic
indentation fracture toughness
hardness
statistical analysis
weibull modulus
Opis:
In the present study, mechanical properties of 0.25Li2O.2SiO2-0.75BaO.2SiO2 glass-ceramic were investigated. The trans-formations‘ temperatures were determined by DTA instrument. The optimum nucleation temperature was found to be 540°C. This suggested the crystallization temperatures as 675, 720 and 800°C. After carrying out crystallization heat treatments, Vickers indentation test was applied. In order to determine the indentation fracture toughness (KIC), crack half-length ‚c‘ of the samples was measured. To calculate KIC, Young’s modulus, E and the measured hardness, Hv were used. Using KIC and probability of fracture ‚P‘, ln ln[1/(1 − P)] – ln KIC graph was drawn based on the Weibull distribution equation. Consequently, Weibull modulus, ‚m‘ and scale parameter, ‚K0‘ were determined and compared with each other.
Źródło:
Archives of Metallurgy and Materials; 2017, 62, 4; 1963-1968
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ductile fracture criterion for specimens with notches made of aluminium alloy EN-AW 2024
Autorzy:
Derpeński, Ł.
Seweryn, A.
Powiązania:
https://bibliotekanauki.pl/articles/280994.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
numerical analysis
fracture of specimen with notches
ductile fracture criterion
Opis:
The paper presents the experimental verification of the most frequently used ductile fracture criteria based on authors own experimental results and numerical calculations. Attention is drawn to the large discrepancy of results of fracture prediction and experimental data for six considered criteria. Based on own results, a new ductile fracture criterion for notched specimens is proposed. In the criterion, it is assumed that fracture initiation occurs when the maximum normal stress reaches a critical value depending on the maximum value of plastic shear strain.
Źródło:
Journal of Theoretical and Applied Mechanics; 2016, 54, 4; 1079-1093
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
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