Temat: ply - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Numerical simulation of blast resistant steel plate strengthened with composite
Autorzy:: Kosiuczenko, K.
Niezgoda, T.
Barnat, W.
Panowicz, R.
Powiązania:: https://bibliotekanauki.pl/articles/245529.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: blast
composite
FEM
ply
simulation
Opis:: The paper presents the process of enhancing blast resistance of a thin steel plate by reinforcing it by a composite. The composite consisted of five differently orientated layers of high resistant S2/Glass fabric. Such system was subjected to a pressure wave generated by detonation of small TNT charge placed at a certain distance from the plate. Reinforcing the plate with composite layer improved the ballistic and blast wave protection level of the shield. Due to the usage of the composite the overall mass of the entire plate raised only slightly. Proposed solution can be used to improve the characteristics of existing armours by adding extra panels or modifying armours of transport vehicles. For the purpose of the numerical analysis, the Finite Element Method and explicit time integration were used. Calculations were done using LS-Dyna software. Numerical solutions of both steel plate and steel plate with composite are presented and evaluated. Pressure wave of the blast impulse, the physical model of the blast test, Structure of the four composite layer, deformation shape of steel-composite plate (pressure wave in Z-direction, t=1 ms), failure of plies, Huber-Mises-Hencky stress as material effort on plate are presented in the paper.
Źródło:: Journal of KONES; 2011, 18, 3; 155-160
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: English Temperature and moisture effect on laminated rhombic hyperbolic paraboloid
Autorzy:: Chaubey, Abhay
Kumar, Ajay
Grzegorczyk-Frańczak, Małgorzata
Szafraniec, Małgorzata
Powiązania:: https://bibliotekanauki.pl/articles/390903.pdf
Data publikacji:: 2019
Wydawca:: Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
Tematy:: temperature
moisture concentration
laminated
skew angle
ply orientation
Opis:: The current work presents a hygrothermal analysis of laminated composite rhombic hyperbolic paraboloids. The cubic variation in displacement field together with cross curvature effects of the shell were used to solve the hygrothermal problem. Because of the parabolic variation of the transverse shear deformation, the shear correction factor was not necessary in this paper. In the mathematical model, the zero conditions of the transverse shear stress at the bottom and top of the shell were applied. The nine-noded curved isoparametric element with seven unknowns in each node was used to implement the present realistic mathematical model. The implementation of the finite element C0 (FE) of the present mathematical model was coded and performed in FORTRAN. The skew hyperbolic paraboloid on which the hygrothermal analysis was conducted had various temperatures, ply orientation, curvatures, moisture concentration, boundary conditions and thickness ratio. The paper shows that with the increase of the skew angle, the non-dimensional deflection decreases, and with the increase of moisture concentration, hygrothermal load and curvature ratio, the deflection increases. The results of the model presented in the paper were compared with other results published in the literature and were found to be consistent with them.
Źródło:: Budownictwo i Architektura; 2019, 18, 4; 23-40
1899-0665
Pojawia się w:: Budownictwo i Architektura
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 3.

Tytuł:: Failure analysis of laminated composite plate under hygro-thermo mechanical load and optimisation
Autorzy:: Choudhury, A.
Mondal, S. C.
Sarkar, S.
Powiązania:: https://bibliotekanauki.pl/articles/264515.pdf
Data publikacji:: 2019
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: współczynnik wytrzymałości
kompozyt hybrydowy
obciążenia
first ply failure load
last ply failure load
strength ratio
fiber orientation angle
hybrid composite
Opis:: Failure analysis of laminated composite plates for different mechanical, thermo mechanical and hygro-thermo mechanical loads for different ply thicknesses, stacking sequences, fiber orientation angles and composite material systems is presented in the paper. A comparative study of different failure theories is also presented in the paper. The effect of fiber orientation angles on the first ply failure load is also studied. A hybrid composite laminate is developed based on the first ply failure load which minimizes weight and cost. The last ply failure load based on fully discounted method is calculated for different stacking sequences. An optimum composite material system and laminate layup is studied for a targeted strength ratio which minimizes weight.
Źródło:: International Journal of Applied Mechanics and Engineering; 2019, 24, 3; 509-526
1734-4492
2353-9003
Pojawia się w:: International Journal of Applied Mechanics and Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 4.

Tytuł:: Analytical discrete stacking sequence optimization of rectangular composite plates subjected to buckling and FPF constraints
Autorzy:: Muc, A.
Chwał, M.
Powiązania:: https://bibliotekanauki.pl/articles/280919.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: stacking sequence optimization
composite plates
buckling
first-ply-failure
Opis:: A special type of new discrete design variables is introduced in order to find optimal stacking sequences for laminated structures. Using the proposed new design variables, we demonstrate how to find analytical (i.e. without any numerical optimization algorithm) optimal solutions for laminates made of plies having three different fibre orientations: 0° , ±45° , 90° . It is proved that the definition of design variables enables us to distinguish two types of optimal solutions, i.e. unimodal and bimodal ones. The form of optimal stacking sequences affects the multiplicity (bimodal problems) or uniqueness (unimodal problems) of the solutions. The decoding procedure between membrane and flexural design variables is also proposed. The results demonstrate the effectiveness, simplicity and advantages of the use of design variables, especially in the sense of the accuracy, repeatability of results and convergence of the method.
Źródło:: Journal of Theoretical and Applied Mechanics; 2016, 54, 2; 423-436
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 5.

Tytuł:: Analysis of cross-ply laminates with piezoelectric fiber-reinforced composite actuators using four-variable refined plate theory
Autorzy:: Rouzegar, J.
Abad, F.
Powiązania:: https://bibliotekanauki.pl/articles/949140.pdf
Data publikacji:: 2015
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: cross-ply laminates
electromechanical loading
four-variable theory
PFRC actuator
Opis:: This study presents an analytical solution for cross-ply composite laminates integrated with a piezoelectric fiber-reinforced composite (PFRC) actuator subjected to electromechanical loading using the four-variable refined plate theory. This theory predicts parabolic variation of transverse shear stresses and satisfies the zero traction on the plate surfaces without using the shear correction factor. Using the principle of minimum potential energy, the governing equations for simply supported rectangular plates are extracted and the Navier method is adopted for solution of the equations. The comparison of obtained results with other common plate theories and the exact solution indicates that besides the simplicity of the presented formulation, it is very accurate in analysis of laminated composite plates integrated with PFRC. Also the effects of the thickness ratio, aspect ratio, number of layers, staking sequence and amount of electrostatic loading on the displacements and stresses are investigated and the obtained findings are reported.
Źródło:: Journal of Theoretical and Applied Mechanics; 2015, 53, 2; 439-452
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 6.

Tytuł:: Comparison of the Bending Resistance Properties of Carbon Fiber/Foam Sandwich Structural Composites with Different Laying Angles
Autorzy:: Zhu, Lvtao
Cao, Shengbin
Zhang, Xiaofeng
Shen, Wei
Zhu, Chengyan
Powiązania:: https://bibliotekanauki.pl/articles/2171959.pdf
Data publikacji:: 2022
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:: sandwich structure
composite
carbon fibre
ply angle
three-point bending
Opis:: This research aimed to explore the influence of fiber laying angles on the bending resistance properties of carbon fiber/foam sandwich structural composites. Four kinds of composites with the following laying angles: [0°]8, [0°/45°/90°/-45°]s, [0°/90°]4 and [45°/-45°]4 were prepared and tested in three-point bending experiments. The results obtained showed that the bending resistance performance was the best when the laying angle was [0°]8, while it was the worst when the laying angle was [45°/-45°]4. Besides, it was found that the tensile performance was the best when the fibers were arranged in the 0° direction when the strength utilisation rate was the highest. In addition, by observing the failure morphologies of the composites, the delamination and foam cracking were found in the four groups of composites. In contrast, the phenomenon of significant fracture was found on composites with a laying angle of [45°/-45°]4 only, indicating it had a poor bending resistance performance.
Źródło:: Fibres & Textiles in Eastern Europe; 2022, 2 (151); 75--81
1230-3666
2300-7354
Pojawia się w:: Fibres & Textiles in Eastern Europe
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 7.

Tytuł:: Strength of normal sections of double-ply rubcon-concrete flexural structures using as a binder of polybutadiene oligomers
Autorzy:: Figovsky, O.
Potapov, Y.
Polikutin, A.
Powiązania:: https://bibliotekanauki.pl/articles/412457.pdf
Data publikacji:: 2015
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: strength
flexural members
double-ply structures
rubcon structures’
rubcon-concrete structures
Opis:: This paper presents the research of the strength of normal sections of rubcon-concrete flexural members with different locations and ratios of the plies to reveal the effect of combing such materials in structures.
Źródło:: International Letters of Chemistry, Physics and Astronomy; 2015, 40; 88-92
2299-3843
Pojawia się w:: International Letters of Chemistry, Physics and Astronomy
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 8.

Tytuł:: Hygrothermoelastic buckling response of composite laminates by using modified shear deformation theory
Autorzy:: Kazemi, M.
Powiązania:: https://bibliotekanauki.pl/articles/949126.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: angle-ply laminate
buckling
composite plate
finite element method
shear deformation theory
Opis:: In this study, a finite element based formulation is developed for analyzing the buckling and post-buckling of composite laminates subjected to mechanical and hygrothermal loads using Modified Hyperbolic Shear Deformation Theory (MHSDT). The changes in the critical buckling load are presented for different lamination schemes, thicknesses, material properties and plate aspect ratios. In addition, post buckling analysis is performed for a composite plate subjected to uniform in-plane thermal and moisture induced loadings by using MHSDT. Matlab software has been used for programming the analysis. The results obtained by Matlab codes are in a satisfactory consistence compared to the references. Thus, the developed MHSDT has been validated for buckling and post buckling analysis of laminated plates in hygrothermal environment.
Źródło:: Journal of Theoretical and Applied Mechanics; 2018, 56, 1; 3-14
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 9.

Tytuł:: Influence of a crosshead rate and a number of stress cycles on measurement results in the in-plane shear test for a cross-ply vinylester-carbon laminate
Autorzy:: Bondyra, A.
Gotowicki, P.
Powiązania:: https://bibliotekanauki.pl/articles/245931.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: vinylester-carbon laminate
regular cross-ply laminate
in-plane shear test
experimental procedure
Opis:: The paper presents some experimental studies on a regular cross-ply laminate of the [(0/90)F] 4S configuration. Each layer is VE 11-M vinylester resin (the manufacturer: ,,Organika-Sarzvna" Chemical Plants, Sarzyna, Poland) reinforced with plam weave carbon fabric of parameters: Stvle 430, Carbon 6K, substance 300g/m2, warp/weft 400/400 tex, 3.7/3.7 yarn/cm (the manufacturer: C. Cramer GmbH & Co. KG Division ECC). The orthotropic laminate was produced by ROMA private enterprise In Grabowiec, Poland, using the vacuum molding method and the technological parameters developed by ROMA taking into account the VE 11-M material specijication. The PN-EN ISO 14129:1997 standard [1] and closely related standards [2-9] were taken into consideration in experimental studies on the static in-plane shear response by a tensile test of a [(plus or minus 45)F]nS laminate. A program of the experiments was focused on testing a rate of a testing machine crosshead and a number of static stress cycles. An influence of these factors on the in-plane shear modulus was investigated. Based on the conducted investigations, the modified experimental procedure has been proposed for determination of the correct value of the in-plane shear modulus and the in-plane shear strength.
Źródło:: Journal of KONES; 2010, 17, 1; 29-40
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 10.

Tytuł:: Statistical analysis of experimental results in the in-plane shear test for a cross-ply vinylester-carbon laminate
Autorzy:: Bondyra, A.
Gotowicki, P.
Powiązania:: https://bibliotekanauki.pl/articles/245928.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: cross-ply laminate
vinylester-carbon laminate
in-plane shear modulus
in-plane shear strength
experimental studies
statistical analysis
Opis:: The study presents experimental studies on a regular cross-ply laminate of a [(0/90) F]4S configuration. Each layer is made of VE 11-M vinylester resin (the manufacturer: "Organika-Sarzyna" Chemical Plants) reinforced with aplain carbon fabric (the manufacturer: C. Cramer GmbH & Co. KG Division E CC). The carbon fabric has the following parameters: Styles 430, filament Carbon 6K, substance 300 g/m , warp and weft 400/400 tex, 3.7/3.7 band/cm. Laminate was produced by ROMA private enterprise using the vacuum molding technology and technological parameters developed by ROMA taking into account the VE l J-M material specification. A program of the experimental studies was aimed on statistical analysis of measurement results of the in-plane shear modulus and the in-plane shear strength of the laminate. In investigations, the in-plane shear test was carried out in accordance to the PN-EN ISO 14129:1997 standard [1], but applying the modified procedure that takes into consideration the results of the previous research on the influence of a traverse velocity and of a number of stress cycles on static measurements of the in-plane shear modulus [2]. The mean value, the standard deviation and the two-sided 95 percent confidence interval for the mean value for the investigated quantities have been determined. Practical usefulness ofthe manufacture technology of the laminate was assessed.
Źródło:: Journal of KONES; 2010, 17, 1; 41-49
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 11.

Tytuł:: First ply failure analysis of laminated composite beam for different boundary conditions under thermo mechanical loading
Autorzy:: Choudhury, Arnab
Mondal, Samar Chandra
Sarkar, Susenjit
Powiązania:: https://bibliotekanauki.pl/articles/264855.pdf
Data publikacji:: 2020
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: współczynnik wytrzymałości
włókno
współczynnik kształtu
kompozyty
first ply failure load
fiber orientation angle
aspect ratio
hybrid composite beam
strength ratio
Opis:: Failure analysis of a laminated composite beam subjected to uniformly distributed load and thermal load is studied for different boundary conditions and fiber orientation angles, based on first ply failure load. Three different boundary conditions are studied: simply supported, fixed-fixed and fixed-free. The strength ratio is computed and compared for different failure theories. The effect of fiber orientation angle and aspect ratio on the strength ratio based on first ply failure load is presented in the paper. The strength ratio and transverse deflection are determined for Graphite/Epoxy and Glass/Epoxy composite and their hybrid combinations to find out the optimum hybrid composite beam with minimum weight, deflection and cost. The problem is solved in MATLAB platform. The mode of failure of the composite beam is determined by using maximum stress theory.
Źródło:: International Journal of Applied Mechanics and Engineering; 2020, 25, 1; 12-26
1734-4492
2353-9003
Pojawia się w:: International Journal of Applied Mechanics and Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 12.

Tytuł:: Stress distribution investigation at the tapered sandwich endings
Badanie rozkładu naprężeń w ukosowanych zakończeniach struktury przekładkowej
Autorzy:: Löffelmann, F.
Powiązania:: https://bibliotekanauki.pl/articles/212621.pdf
Data publikacji:: 2017
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
Tematy:: sandwich endings
tapering
ramp
closeout
FEM
filler
ply drop
zakończenia struktury przekładkowej
stożkowe przejście do laminatu
klinowe przejście do laminatu
zamknięcie
MES
wypełniacz
wygubianie warstw
Opis:: One of the typical sandwich ending is tapered transition to a solid laminate, which causes significant stress distribution changes. The reviewed articles show that tapered area causes increase in the shear stress in the core, increase of the axial forces in the facesheets and local bending at the fork point, at points of the tapering angle change, and at ply drop positions. Most of the studies gave attention to the endings without reinforcing. During Erasmus+ internship at KTH 2D model of the tapered ending with reinforcing plies, various geometry and resin filler in the core tip was investigated to see the influence on the stress distribution. It was found that tension load case is not as critical as bending load case. Increasing of the solid laminate thickness, adding plies and inserting a short resin or adhesive filler into the core tip area lead to significant stress reduction, whereas in the transition point, from tapering to constant thickness sandwich, increasing radius is more efficient than reinforcing plies in regard to reduce stress concentration.
Jednym z typowych rodzajów zakończeń struktury przekładkowej jest stożkowe (klinowe) przejście do laminatu, które w istotny sposób wpływa na zmianę rozkładu naprężeń. Na podstawie literatury stwierdzono, że powierzchnia klinowa powoduje: wzrost naprężeń ścinających w rdzeniu, sił osiowych w pokryciach, lokalne zginanie w obszarze zamknięcia laminatu, w miejscach zmiany kąta klina oraz w obszarach wygubiania warstw. Największą uwagę poświęcono zakończeniom bez dodatkowych wzmocnień. Podczas projektu realizowanego w ramach programu ERASMUS+, dotyczącego modelu dwuwymiarowego uwzględniającego zakończenie klinowe przeanalizowano wpływ kształtu struktury oraz rodzaju zastosowanego wypełniacza na rozkład naprężeń. Wykazano, że w przypadku obciążenia rozciągającego nie jest ono tak krytyczne jak obciążenie zginające. Zwiększając grubość laminatu, dodając warstwy oraz wprowadzając wypełniacz żywiczy lub klejowy w obszarze szczytu rdzenia prowadzi do redukcji naprężeń, natomiast w punkcie przejścia z powierzchni klinowej do stałej grubości rdzenia wzrost promienia jest bardziej efektywny aniżeli wzmocnienie dodatkowymi warstwami w odniesieniu do redukcji koncentracji naprężeń.
Źródło:: Prace Instytutu Lotnictwa; 2017, 4 (249); 64-81
0509-6669
2300-5408
Pojawia się w:: Prace Instytutu Lotnictwa
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Informacja

Wyszukujesz frazę "ply" wg kryterium: Temat

Źródło danych

Dostawca treści

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język