Journal articles: 'Plates (Engineering)'

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Lim, Teik Cheng. "Auxetic Plates on Auxetic Foundation." Advanced Materials Research 974 (June 2014): 398–401. http://dx.doi.org/10.4028/www.scientific.net/amr.974.398.

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Auxetic solids are materials that exhibit negative Poisson’s ratio. This paper evaluates the maximum stresses in point-loaded (a) auxetic plates on conventional elastic foundation, (b) conventional plates on auxetic elastic foundation, and (c) auxetic plates on auxetic elastic foundation vis-à-vis conventional plates on conventional elastic foundation. Using thick plate theory for infinite plates on elastic foundation, it was found that in most cases the auxetic plates and auxetic foundation play the primary and secondary roles, respectively, in reducing the plate’s maximum stresses. It is herein suggested that, in addition to materials selection technique and other design considerations, the use of auxetic plates and/or auxetic foundation be introduced for reducing stresses in plates on elastic foundations.

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Deng, Lang Ni, Hua Chen, and Kan Kang. "Flexural Strengthening of Reinforced Concrete Beams with Prestressed CFRP Plates." Advanced Materials Research 255-260 (May 2011): 3077–81. http://dx.doi.org/10.4028/www.scientific.net/amr.255-260.3077.

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Four medium -scale reinforced concrete beams were constructed and tested to investigate the effectiveness of external poststrengthening with prestressed carbon fiber reinforced polymer (CFRP) plates. The various variables included the strengthening method and the amount of prestressing. The experiments consisted of one control beam, one nonprestressed CFRP-bonded beam, and two prestressed CFRP-bonded beams, all the beams were subjected to four-point bending tests. In comparison to the control beam and the nonprestressed CFRP-bonded beam, the cracking load, yield load, ultimate load and stiffness of the beams with bonded prestressed CFRP plates were increased. The failure mode of the prestressed CFRP-plated beams was not debonding, but concrete crushing. After the debonding of the CFRP plates, the behaviour of the bonded CFRP-plated beams changed to that of unbonded CFRP-plated beams due to the effect of the anchorage system. The ductility of the beams strengthened with CFRP plates having the anchorage system was considered high if the ductility index was above 3.

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Soleimani, Ebrahim, Mohammad Reza Tabeshpour, and Mohammad Saeed Seif. "Parametric study of buckling and post-buckling behavior for an aluminum hull structure of a high-aspect-ratio twin hull vessel." Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment 234, no. 1 (August 24, 2019): 15–25. http://dx.doi.org/10.1177/1475090219868635.

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Metal plates are essential parts of structures such as ship hulls and offshore oil platforms. These plates are typically under compressive axial forces. Hence, one of the main mechanisms for failure and collapse of such structures is buckling of plates. Thus, for safe and secure design, buckling strength of plates should be evaluated. Finite element analysis techniques are perfect tools for this purpose because of the accuracy and flexibility for performing simulations with different variables. In this study, the strength of aluminum plates has been studied using finite element analysis software and it was tried to study the influence of variables such as initial imperfections, plate thickness and aspect ratio on plate strength. It was found that increase in the imperfection magnitude leads to a decrease in the strength of the plate. This is mostly noticed in thin plates because of the plate’s stiffness reduction. Although the plate’s aspect ratio has a slight effect on strength, it has a considerable impact on the failure mechanism. In order to study a combination of plates and stiffeners buckling behavior, part of a high-aspect-ratio twin hull vessel hull structure is assessed under bending moment. It is observed that longitudinal stiffeners at the bottom of the hull in linear analysis undergo the maximum stress, while in non-linear analysis, the maximum stress is spread along with the structure of the deck and bottom, and neutral axis tolerates the minimum stress.

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Voyiadjis, George Z., and Shahram Sarkani. "Engineering Large Deflection Theory for Thick Plates." Journal of Engineering Mechanics 115, no. 5 (May 1989): 935–51. http://dx.doi.org/10.1061/(asce)0733-9399(1989)115:5(935).

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Xiaohui, He, Wang Qiang, Zhang Chenglong, Zhang Shunfeng, and Gao Yaming. "RESEARCH ON A FLUTTER STABILITY CONTROL MEASURE OF A FABRICATED STEEL TRUSS BRIDGE." Transactions of the Canadian Society for Mechanical Engineering 41, no. 2 (June 2017): 181–95. http://dx.doi.org/10.1139/tcsme-2017-1013.

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In order to improve the flutter stability of a certain type fabricated steel truss bridge, a method of setting guiding plates is proposed. Based on the two-dimensional 3 DOF coupling flutter method (2d-3DOF method), and by use of the numerical wind tunnel established by computational fluid dynamics (CFD), the flutter stability control measures of setting guiding plates are simulated. Through CFD numerical simulation, the flow field characteristics, flutter derivatives and critical flutter speed of original and guiding-plated models are obtained. It is found that for a certain type fabricated steel truss bridge, the guiding plates can improve its flutter stability. Thus, the feasibility and reliability of setting the guiding plates are proved, and the foundation for its further application in practical projects is laid.

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Trias Atmadja, Wahyu Mahendra, Herman Parung, Rita Irmawaty, and A. Arwin Amiruddin. "Behavior Hollow Concrete Reinforced Slab with The Utilization of Polyvivyl Chloride Pipe as a Cavity." Open Civil Engineering Journal 15, no. 1 (July 12, 2021): 172–81. http://dx.doi.org/10.2174/1874149502115010172.

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Background: Slab weight can be reduced by replacing the amount of concrete in the tensile area with the utilization of modification polyvinyl chloride pipe as cavity without reducing the flexural strength because the nature of concrete is weak against tensile strength. Methods: This research with the experimental method using static load. The setting of tools refers to the American Society for Testing and Material E 2322, bending analysis is used moment coefficient method, deflection by applying Ugural and Navier method, and shear analysis using Indonesia National Standard 03-2847-2019. Results: The specimens consist of solid plates with a thickness of 140 mm and hollow plates with a thickness of 140 mm and 159 mm. The maximum load capacity solid plate is 410.642 kN, while the hollow plates (140 mm) is 335.18 kN, and for the hollow plates 159 mm is 396.257 kN. The solid plate’s stiffness is 16.321, the hollow plates 140 mm is 14.787 and the hollow plate 159 mm is 24.194, while the ductility is 1.993 on solid plate, the hollow plate 140 mm is 2.014, and the hollow plate 159 mm is 1.862. The solid plate’s damage is flexural, while the two hollow plates are a combination of bending and shear damage. The crack pattern on the solid plates is flexible, while the crack pattern on both hollow plates is a combination of flexural cracks and shear cracks. Conclusion: The use of modified polyvinyl chloride pipes can be recommended in the structure of the plate. There is a small, insignificant difference in the flexural behaviour between the solid plate and hollow concrete reinforced slab with the utilization of Polyvinyl Chloride.

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Belenkiy, Leonid M., Yury N. Raskin, and Alfred Tunik. "Plastic Strength Criterion for Design of Laterally Loaded Ship Plates." Marine Technology and SNAME News 45, no. 02 (April 1, 2008): 63–67. http://dx.doi.org/10.5957/mt1.2008.45.2.63.

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Design of hull plating based on a plastic failure criterion is discussed in this paper. The plating is loaded by high lateral pressure, e.g., slamming or ice loads. The process of plastic deformations as a function of load is analyzed. Experience in establishing in-service permissible permanent deformations of plates is considered as well as early experimental data of plastic failure of plates. Formulations are developed for permanent plastic deflections preceding the plate's failure coupled with a diagram for calculating the plate's permanent deflections when the plastic deflections became large. Sample calculations in this paper are based on the scantlings of a U. S. Coast Guard cutter.

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Alashkar, Adnan, Mohamed Elkafrawy, Rami Hawileh, and Mohammad AlHamaydeh. "Elastic Buckling Behavior of Functionally Graded Material Thin Skew Plates with Circular Openings." Buildings 14, no. 3 (February 21, 2024): 572. http://dx.doi.org/10.3390/buildings14030572.

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This study investigates the elastic buckling behavior of Functionally Graded Material (FGM) thin skew plates featuring a circular opening. FGMs, known for their unique property gradients, have gained prominence in structural engineering due to their mechanical performance and durability. Including a circular opening introduces a critical geometric consideration, influencing the structural stability and load-carrying capacity of FGM plates. The study examines the effects of the skew angle, plate’s aspect ratio, opening position, and size on the critical buckling load, normalized buckling load, and various buckling failure modes through computer modeling and finite element analysis. The results offer valuable insights into the interplay between material heterogeneity, geometric configuration, and structural stability. For instance, the critical buckling load increases by 29%, 82%, and 194% with an increment in skew angle from 0° to 30°, 45°, and 60°, respectively. Moreover, as the opening shifts from the plate’s edge closer to the center, the critical buckling load decreases by 26%. The critical buckling load is also dependent on the power index, as an increase in the power index from 0.2 to 5 reduced the buckling load by 1698 kN. This research contributes to the advancement of our understanding of FGM thin plates’ behavior under skew loading conditions, with implications for the design and optimization of innovative structures. The findings presented provide a foundation for further exploration of advanced composite materials and their applications in structural engineering.

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Wang, James Ting-Shun, and Chien-Chang Lin. "Engineering analysis of buckling of delaminated beam plates." Composite Structures 34, no. 4 (April 1996): 397–407. http://dx.doi.org/10.1016/0263-8223(96)00007-4.

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10

Kamiñski, Marcin. "Computational Engineering Homogenisation of Steel Reinforced Concrete Plates." Advanced Composites Letters 8, no. 5 (September 1999): 096369359900800. http://dx.doi.org/10.1177/096369359900800502.

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The main subject of the paper is the application of the homogenisation method to the analysis of the elastostatic problem for the steel reinforced concrete plate. The upper and lower bounds on the effective elasticity tensor components as well as direct approximation of the tensor are used to build up the computational model of the structure. The results of numerical analysis are compared against the experimental data. The convergence of experimental and computational data for the real and homogenised composite plate confirms the effectiveness of the homogenisation method applied in the analysis of steel-reinforced uncracked concrete structures. To verify the generality of this approach, analogous tests should be carried out for other types of engineering composite structures, especially in continuous non-linear range.

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NOJIMA, Taketoshi, and Ken-ichi SAKAGUCHI. "Blanking of Engineering Ceramic Plates by Press-Working." Transactions of the Japan Society of Mechanical Engineers Series C 62, no. 593 (1996): 346–52. http://dx.doi.org/10.1299/kikaic.62.346.

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Mukherjee, Kenneth Sunil, and Tetsuya Yao. "Buckling/Elastoplastic Collapse Behavior and Strength of Continuous Tee-Bar Stiffened Plates." Journal of Offshore Mechanics and Arctic Engineering 128, no. 2 (December 8, 2005): 145–55. http://dx.doi.org/10.1115/1.2185131.

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The influence of residual stress distributions should be properly taken into account in the structural analysis of stiffened plates. The generally assumed residual stress distributions in the analyses often have constant values across their cross sections. This approximation is also applied to identical stiffeners that are constructed by different methods, such as rolled and built-up tee-bar stiffened plates. This paper focuses on buckling/plastic collapse behavior of rolled and built-up tee-bar stiffened plates with experimentally determined residual stress distributions in their cross sections. The structural behavior until collapse of these two types of tee-bar stiffeners is analyzed in detail, using residual stresses measured from experimental results. Various numerical modelling aspects of stiffened plated structures are briefly discussed and finally the influence of differences in residual stress distributions on buckling/plastic collapse behavior of continuous stiffened plates is studied based on selected results, using the Finite Element Method.

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Verdiere, Kevin, Simon Campeau, and Julien Biboud. "Characterizing elastic parameters of isotropic thin plates using impedance tube and transmission loss measurements: a numerical inverse method." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 266, no. 1 (May 25, 2023): 1020–35. http://dx.doi.org/10.3397/nc_2023_0123.

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Thin plates are widely used in various engineering applications, including aerospace, automotive, and construction industries. The mechanical properties of these plates, such as Young's modulus, Poisson's ratio, and structural damping, are essential in determining their acoustic performance. While there are various methods for measuring these properties individually or simultaneously, accurately obtaining them can be difficult due to the thin plate's delicate structure and the need for high precision and sensitive equipment. In this paper, we present a numerical inverse method for characterizing the elastic parameters of isotropic thin plates using transmission loss measurements obtained from an impedance tube and clamped circular specimen. The proposed method is compared to the Oberst beam technique (ASTM E756-05), and demonstrated through several examples ultimately allowing for the prediction of diffused field transmission loss obtained through intensity measurements in a small reverberant room.

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Gokul, P. V., Bennet Kuriakose, and Salini Theres N. Kurian. "Numerical Analysis of Thin Plates with Holes." Applied Mechanics and Materials 857 (November 2016): 154–58. http://dx.doi.org/10.4028/www.scientific.net/amm.857.154.

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Plates are the important structural members finding applications in the field of structural engineering, ship technology and aerospace engineering. Holes are often provided in the plates for the purpose of services and aesthetics. Pitting corrosion can also induce holes on the plates, thereby inducing stress concentration and redistribution of stress around the hole. In this paper, the popular finite element software ANSYS is used for the static analysis of thin plates with holes. The influence of shape and size of the hole on the stress distribution of plate is also analysed. The study can form foundation for strength assessment of steel plates with holes, especially residual strength of plates subjected to pitting corrosion.

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Xie, Dong Hai, Hong Wei Tang, and Rui Song Pan. "Experimental Study of Two-Dimensional Elastic Thin Plate Damage Identification Method Based on Modal Curvature." Applied Mechanics and Materials 166-169 (May 2012): 1202–6. http://dx.doi.org/10.4028/www.scientific.net/amm.166-169.1202.

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Two-dimensional elastic thin plates are widely used in civil engineering structures. The plates deteriorate gradually under service conditions, which influence the safety of engineering structures. How to identify the damage of the plate is one of the hot issues in the civil engineering fields. The relevant theoretical analysis and numerical simulation are stressed, but the physical model experiments are few. There are some problems among the theory, methods and practical engineering applications. A method is presented for determining damage location and degree of civil engineering structures based on model testing of two-dimensional steel plates.

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Dibyajyoti, D., and B. Alfia. "Review on laminated composite plates." Proceedings of the 12th Structural Engineering Convention, SEC 2022: Themes 1-2 1, no. 1 (December 19, 2022): 83–88. http://dx.doi.org/10.38208/acp.v1.477.

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A composite material is a combination of different material which can be assembled to provide required engineering properties like bending, buckling, stiffness etc. It can give better properties than those of individual components. A lamina is the building block of modern composite laminated structures. A lamina is also known as a ply, or a layer. A laminate has several layers of lamina, or laminae. Since the early years of engineering, various types of laminated composite materials have been used in various engineering fields, such as in aerospace, military and automotive industries that are subjected to high temperatures. Thermal stress caused due to change in temperature, increase in temperature causes the changes in material properties of a plate which in turn complicates the analysis and design and may affect the structure also. Therefore, the analysis of thermal stress in design of structure is very important. A critical review of available literature for the prediction of the behaviour of laminated composites under thermal conditions is carried out and summarized. This work attempts to review the studies carried out from 2000 on laminated composite plates by representing classification based on Classical laminate plate concept, First order shear deformation theory, Higher order shear deformation theory, Layerwise theory and Thermal stress on laminated plates.

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Mullisen, R. S. "Thermal Engineering Design Project: A Calorimeter That Measures the Specific Heat of Aluminum." International Journal of Mechanical Engineering Education 31, no. 1 (January 2003): 63–75. http://dx.doi.org/10.7227/ijmee.31.1.4.

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A thermal engineering design project requiring the design, construction, and operation of a calorimeter that measures the specific heat of aluminum was assigned to a class of third-year mechanical engineering students. Before making the assignment, the author developed his own design, which consisted of two individual calorimeters — each an assembly of 13 aluminum plates with electric resistance heater wires laced between the plates. The exterior surfaces of both calorimeters and the surrounding insulation were identical. However, the interior plates were different — one calorimeter had solid interior plates and the other had perforated interior plates. By initially adjusting the electrical power into each calorimeter the temperature versus time curves for each calorimeter were matched. This curve match allowed cancellation of the unknown heat loss from each calorimeter and cancellation of the unknown heater thermal capacity. The final result was a specific heat for the aluminum alloy that deviated by 4.4% from a published value. A class of third-year mechanical engineering students, working in teams, produced designs using the method of mixtures (aluminum and water) and electrically heated aluminum samples. The 17 student groups plus the author produced 129 data points with a mean specific heat value that deviated by 19.5% from a published value.

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Мокрицкий, Борис, Boris Mokritskiy, Татьяна Усова, Tat'yana Usova, Ольга Шакирова, Ol'ga Shakirova, Геннадий Усанов, and Gennadiy Usanov. "INVESTIGATION OF OUTPUT PARAMETER CORRELATION OF CUTTING ENGINEERING PROCESS WITH MASS HARD-ALLOY REPLACEABLE METAL CUTTING PLATES." Bulletin of Bryansk state technical university 2019, no. 9 (October 7, 2019): 36–41. http://dx.doi.org/10.30987/article_5d9317b2a4fae2.02370100.

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It is possible to assume physical properties or stress-strain characteristics of material as a basis of diagnostics of a machine tool system state on the basis of which to forecast a level of engineering process updating for product blank machining and to optimize tool parameters and other equipment components ensuring efficient machining processes economically and technically. The purpose of the work: according to the measurement results of the mass of replaceable hard-alloy cutting plates of a metal-cutting tool to draw a conclusion of their operational capability under those or other operational conditions at a standard engineering enterprise. There are considered standard designs of cutting and chip breaking plates. The mass measurements of more than 250 plates are carried out. The procedure for the plate selection according to quality is developed. The results obtained are tabulated and illustrated. A share ratio of suitable and scrap plates is shown. There are formulated recommendations regarding suitable plates use depending on their quality grade.

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Leung, Hau Y., and Ramapillai V. Balendran. "EFFECT OF USING EXTERNAL GFRP PLATES ON STRUCTURALLY DEFICIENT RC BEAMS." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 9, no. 1 (March 31, 2003): 36–44. http://dx.doi.org/10.3846/13923730.2003.10531299.

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This paper presents some experimental results on the behaviour of flexure- and shear-deficient RC beams strengthened with external glass fibre reinforced polymer (GFRP) plates. Ten number of 2,5 m long over-designed, unplated under-design and plated under-designed beams were examined under four-point bending condition. Experimental results indicated that use of GFRP plates enhanced the strength and deformation capacity of the structurally deficient beams by altering their failure modes. Application of side plates on shear-deficient RC beams appeared to be more effective than using bottom plates on flexure-deficient RC beams. However, without any improvement on concrete compressive capacity, additional shear capacities provided to the beams under the action of side plates increased the likelihood of beam failure by concrete crushing. Simultaneous use of bottom and side plates on flexure- and shear-deficient RC beams could result in reduced deflection. The change in the neutral axis depth and GFRP strain was also addressed.

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Melaibari, Ammar, Salwa A. Mohamed, Amr E. Assie, Rabab A. Shanab, and Mohamed A. Eltaher. "Mathematical and Physical Analyses of Middle/Neutral Surfaces Formulations for Static Response of Bi-Directional FG Plates with Movable/Immovable Boundary Conditions." Mathematics 11, no. 1 (December 20, 2022): 2. http://dx.doi.org/10.3390/math11010002.

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This article is prompted by the existing confusion about correctness of responses of beams and plates produced by middle surface (MS) and neutral surface (NS) formulations. This study mathematically analyzes both formulations in the context of the bending of bi-directional functionally graded (BDFG) plates and discusses where the misconceptions are. The relation between in-plane displacement field variables on NS and on MS are derived. These relations are utilized to define a modified set of boundary conditions (BCs) for immovable simply supported plates that enables either formulation to apply fixation conditions on the refence plane of the other formulation. A four-variable higher order shear deformation theory is adopted to present the displacement fields of BDFG plates. A 2D plane stress constitution is used to govern stress–strain relations. Based on MS and NS, Hamilton’s principles are exploited to derive the equilibrium equations which are described by variable coefficient partial differential equations. The governing equations in terms of stress resultants are discretized by the differential quadrature method (DQM). In addition, analytical expressions that relate rigidity terms and stress resultants associated with the two formulations are proved. Both the theoretical analysis and the numerical results demonstrate that the responses of BDFG plates based on MS and NS formulations are identical in the cases of clamped BCs and movable simply supported BCs. However, the difference in responses of immovable simply supported BCs is expected since each formulation assumes plate fixation at different planes. Further, numerical results show that the responses of immovable simply supported BDFG plates obtained using the NS formulation are identical to those obtained by the MS formulation if the transferred boundary condition (from NS- to MS-planes) are applied. Theoretical and numerical results demonstrate also that both MS and NS formulations are correct even for immovable simply supported BCs if fixation constraints at different planes are treated properly.

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Fessler, H., and C. Pappalettere. "Plastic-Elastic strains in two-dimensional sections of partial-penetration fillet welds." Journal of Strain Analysis for Engineering Design 24, no. 1 (January 1, 1989): 15–21. http://dx.doi.org/10.1243/03093247v241015.

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The photoelastic coating technique was used to study plastic strains at the orthogonal intersections of plates, formed by welding two side plates, without weld preparation, to a main plate. Models were cut from this weldment, perpendicularly to the planes of the plates. These models were loaded by tension and pure bending applied to the side plates. Although yielding starts at the weld toes, it remains constrained there due to the greater strength of the heat-affected zone. Plastic collapse occurs in the ‘parent’ plate. This phenomenon is due to the heat affected zone, not due to the notch formed by the weld.

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Prasad, Elluri Venkata, and Shishir Kumar Sahu. "Buckling of fiber metal laminated plates – numerical and experimental studies." Aircraft Engineering and Aerospace Technology 92, no. 3 (January 3, 2020): 472–81. http://dx.doi.org/10.1108/aeat-01-2019-0005.

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Purpose The purpose of this study is to study the buckling behavior of new aircraft material, i.e. glass fiber metal laminated (GFML) plates. Design/methodology/approach The first-order Reissner–Mindlin theory is used in the present finite element formulation to determine the buckling loads of GFML plates. A program is developed in MATLAB for analyzing the effect of different parameters on buckling loads GFML plates. A set of experiments was performed to determine critical buckling loads of GFML plates using universal testing machine INSTRON 8862 and compared with predictions using the numerical model. Findings The effects of various parameters such as aspect ratio, side to thickness ratio, ply orientation and boundary conditions on buckling loads of GFMLs are examined. With the increase of aspect ratio, the reduction in buckling load is observed, while the increase inside to thickness ratio decreases the buckling load of GFML plates. There is a slight variation in buckling load with the increase of ply orientation. The buckling load is significantly influenced by boundary conditions because of restraint at the edges. Practical implications These types of materials are used in lightweight structures such as aircraft, aerospace and military vehicles. The results reported in the present study can be used as design guidelines while designing fiber metal laminated (FML) plated structures. Originality/value For the first time, the authors have studied the buckling behavior of bidirectional woven FML plates using both numerical and experimental techniques.

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Le Gouguec, Thierry, Najib Mahdi, Stéphane Cadiou, Cédric Quendo, Erich Schlaffer, Walter Pessl, and Alain Lefevre. "Modeling up to 45 GHz of coupling between microvias and PCB cavities considering several boundary conditions." International Journal of Microwave and Wireless Technologies 8, no. 3 (February 19, 2016): 421–30. http://dx.doi.org/10.1017/s1759078716000192.

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The recent developments in electronic cards such as the network equipment are characterized by the miniaturization of the board size and the increasing complexity of the layout. Because of these requirements, multi-layered printed circuit boards are commonly used and vias connecting signal lines on different layers, or integrated circuit devices to power and ground planes, are frequently used and often essential. However, a via is not an ideal transmission line. Besides, it creates discontinuities at high frequencies leading to high insertion loss degradation of signal which limits the performances of integrated circuit and systems. In this paper, the impacts of coupling between via and parallel-plates cavity on the response of microwave integrated devices are highlighted in the first part. Then, to describe the intrinsic interaction between the via transition and parallel-plate modes, the notion of parallel-plates matrix impedances is presented and new boundary conditions like open or plated through holes shielded boundaries of the cavities are introduced. Then, using this physics-based model, an intuitive equivalent circuit has been developed. Finally, the proposed approach and the equivalent circuits were validated by using comparisons with electromagnetic simulations and measurements in different scenarios.

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Suhir, E. "Calculated Interfacial Stresses in Elongated Bimaterial Plates Subjected to Bending." Journal of Electronic Packaging 111, no. 4 (December 1, 1989): 277–81. http://dx.doi.org/10.1115/1.3226547.

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In this analysis we suggest a simple engineering method for the evaluation of the interfacial stresses in elongated bimaterial plates subjected to bending. The taken approach enables one to satisfy the boundary conditions at the plate’s ends within the framework of the elementary beam, or long-and-narrow plate, theory. The analysis is carried out in application to bending on a circular mandrel, which is regarded by many reliability engineers as a suitable test vehicle for the evaluation of the mechanical performance of the attachment material in adhesively bonded and soldered assemblies in electronic packaging.

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MAURYA, Ram Subash. "NUMERICAL INESTIGATION OF ISOTHERMAL FLOW AROUND IMPINGEMENT PLATES IN A SHELL AND TUBE EXCHANGER." Journal of Thermal Engineering 3, no. 5 (September 19, 2017): 1442–52. http://dx.doi.org/10.18186/journal-of-thermal-engineering.338901.

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Zhang, Ji Gang, Yan Mei Liu, Jing Jing Zhang, and Ke Yong Gao. "Study on Hysteretic Energy Dissipation of SMA Wires, Bars and Plates." Advanced Materials Research 243-249 (May 2011): 5339–42. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.5339.

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Through tensile tests of shape memory alloy(SMA)wires,bars and plates, this paper analyzes hysteretic energy-dissipating capacities of thesesmartSMA materials in cyclic loading conditions. According to the test results, this article demonstrates the influence on energy dissipating capacity of SMA wires,bars and plates by different strain amplitudes, loading frequencies, cyclic numbers and pre-strains, then obtains change rules of hysteretic energy-dissipation.The test results show that the SMA wires is better than the other two SMA bars and plates, the SMA wires, bars and plates had better to be trainingbefore civil engineering application.

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Salač, Petr, and Marcel Horák. "Problem of Determination of Optimal Supports Position for Jumbo Flat Glass with Free Edges." Advanced Materials Research 39-40 (April 2008): 547–52. http://dx.doi.org/10.4028/www.scientific.net/amr.39-40.547.

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Recent trends in architecture are characterized with wide applications of laminated glass plates in facing systems of high-rise buildings, where the plates are oriented in both vertical and horizontal planes. This paper deals with mathematical description of optimization problem for location of finite number of rigid supports horizontally placed on jumbo flat glass plate with free edges. Associated state problem corresponding to Kirchhoff’s hypothesis of plate theory is solved. Further the optimization problem for finding location of the finite number of rigid supports, with respect to the condition for minimal deflection of the plate in the sense of 1 C -norm, is solved. Theoretical results are used in numerical simulation by the finite element method (FEM). It allows us to reduce the computation time for solution of real projects. Further application of such results is for example in the area of automatic handling in the flat glass production in the case of engineering design for location of vacuum gripping heads components of handling devices.

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Markovic, Jelena, Natasa Lukic, and Dragica Jovicevic. "Application of Lattice-Boltzmann method and analysis of fluid flow between two sinusoidal plates." Acta Periodica Technologica, no. 41 (2010): 121–29. http://dx.doi.org/10.2298/apt1041121m.

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This paper is concerned with numerical study of fluid flow through a pair of corrugated platest. The aim was to observe and understand the behavior of the flow and vortex formation through channels where the fluid is subjected to a periodic increase and decrease in cross-section area. The plates modeled for the study had sinusoidal profiles. A pair of plates with 180? phase shift was simulated in two-dimensional spaces. The Reynolds number was a function of the average plate spacing (Havg) and the laminar flow velocity and it was in the range between 200 and 1000.

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MARTÍNEZ VALLE, J. M. "A NEW REFINED THEORY OF PLATES WITH TRANSVERSE SHEAR DEFORMATION FOR MODERATELY THICK AND THICK PLATES." Latin American Applied Research - An international journal 46, no. 1 (January 29, 2016): 7–13. http://dx.doi.org/10.52292/j.laar.2016.319.

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In this paper we propose a new refined shear deformation plate theory which possesses a series of desirable features, the most salient of which are as follows: (1) loads, which are generally applied on the middle surface of the plate, act on the upper surface of the plate; (2) equations applicable to the calculation of the stresses in isotropic plates which provide the same order of accuracy as several theories with second-order shear deformation effects; (3) a theory, in the classical sense defined, since it gives easy expressions for application to problems in different fields in architecture and civil engineering.

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Sato, Koichi. "Composite Plates of Concrete Slabs and Steel Plates." Journal of Engineering Mechanics 117, no. 12 (December 1991): 2788–803. http://dx.doi.org/10.1061/(asce)0733-9399(1991)117:12(2788).

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Senjanović, Ivo, Neven Hadžić, and Nikola Vladimir. "Vibration analysis of thin circular plates with multiple openings by the assumed mode method." Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment 231, no. 1 (August 3, 2016): 70–85. http://dx.doi.org/10.1177/1475090215621578.

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Circular plates with openings are used in many engineering structures, especially as swash bulkheads in cargo tanks of liquefied gas carriers. In this article, an approximate procedure is worked out for the vibration analysis of circular plates with different boundary conditions and a different number and size of openings with an arbitrary arrangement within the plate area. The assumed mode method, recently used in the vibration analysis of rectangular plates, is applied in this case. Following the basic idea, the effect of the openings is accounted for by subtracting the potential and kinetic energy of the cut-out plate parts corresponding to the total plate energies without openings. The procedure is illustrated with numerical examples related to the vibration analysis of annular plates and circular plates with openings. The results are evaluated through their comparison with an analytical and finite element method solution.

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32

Stoyan, Vladimir, and Sergey Voloshchuk. "ON THREE-DIMENSIONAL INITIAL-BOUNDARY PROBLEMS OF THICK ELASTIC PLATES’ DYNAMICS." Journal of Automation and Information sciences 3 (May 1, 2021): 34–49. http://dx.doi.org/10.34229/1028-0979-2021-3-3.

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Complex problems of three-dimensional elasticity theory for thick elastic plates with arbitrary geometry of their lateral surface are solved. Analytical dependencies of the components of the elastic dynamic displacements’ field of the plate’s inner points from the boundary-surface external-dynamic disturbing factors, defined by continuous functions or their values’ vectors, are constructed. It is assumed, that these disturbances have a classically defined powerful character, or are specified by a certain number of differential transformations of the field’s components of the plate’s dynamic displacement points. The absence of quantitative and qualitative restrictions on the determined transformations of the initial-boundary problems of the considered plates’ dynamics makes it incorrect and unsolvable by methods of classical and computational mathematics. The methodology of root-mean square mathematical modeling of discretely and continuously specified observations for the initial-boundary plate’s condition by the system of modeling functions and their values’ vectors is proposed in the paper. Constructed in this way field’s components of spatial-dynamic displacements of the plate’s points, precisely satisfying classical Lyame equation, with the available information on its initial-boundary condition, are agreed according to the root-mean square criterion. The problem of the obtained solutions’ ambiguity is investigated, their accuracy evaluation in accordance with the information on the external- dynamic condition of the investigated plate is conducted. The plate’s dynamics in the particular mode, for cases of information lack on external- dynamic influences on it and under the conditions of its geometric background according to spatial coordinates. The computer realization of the obtained mathematical results is engineeringly simple and can be easily implemented with the help of well-known methods of computational mathematics.

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Troina, Grégori, Marcelo Cunha, Vinícius Pinto, Luiz Rocha, Elizaldo dos Santos, Cristiano Fragassa, and Liércio Isoldi. "Computational Modeling and Constructal Design Theory Applied to the Geometric Optimization of Thin Steel Plates with Stiffeners Subjected to Uniform Transverse Load." Metals 10, no. 2 (February 4, 2020): 220. http://dx.doi.org/10.3390/met10020220.

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Stiffened thin steel plates are structures widely employed in aeronautical, civil, naval, and offshore engineering. Considering a practical application where a transverse uniform load acts on a simply supported stiffened steel plate, an approach associating computational modeling, Constructal Design method, and Exhaustive Search technique was employed aiming to minimize the central deflections of these plates. To do so, a non-stiffened plate was adopted as reference from which all studied stiffened plate’s geometries were originated by the transformation of a certain amount of steel of its thickness into longitudinal and transverse stiffeners. Different values for the stiffeners volume fraction (φ) were analyzed, representing the ratio between the volume of the stiffeners’ material and the total volume of the reference plate. Besides, the number of longitudinal (Nls) and transverse (Nts) stiffeners and the aspect ratio of stiffeners shape (hs/ts, being hs and ts, respectively, the height and thickness of stiffeners) were considered as degrees of freedom. The optimized plates were determined for all studied φ values and showed a deflection reduction of over 90% in comparison with the reference plate. Lastly, the influence of the φ parameter regarding the optimized plates was evaluated defining a configuration with the best structural performance among all analyzed cases.

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Park, Chul H., and A. Baz. "Newtonian and Variational Formulations of the Dynamics of Plates with Active Constrained Layer Damping Treatments." Journal of Vibration and Control 10, no. 3 (March 2004): 399–421. http://dx.doi.org/10.1177/1077546304033364.

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In this paper we present Newtonian and variational formulations of the dynamics of plates treated fully with active constrained layer damping (ACLD). The governing equations of the plate/ACLD system are derived to describe the interaction between the dynamics of the plates, the viscoelastic damping layer and the active piezoelectric constraining layers. The developed equations of the plate/ACLD system provide analytical models for predicting the dynamics of laminated plates subjected to passive and active vibration damping controls. Numerical solutions of the analytical models are presented for simply-supported plates in order to study the performance of the plate/ACLD system for different control strategies. The developed models present invaluable means for designing and predicting the performance of the smart laminated plates that can be used in many critical engineering applications.

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Dong, S. B., and C. K. Chun. "Shear Constitutive Relations for Laminated Anisotropic Shells and Plates: Part I—Methodology." Journal of Applied Mechanics 59, no. 2 (June 1, 1992): 372–79. http://dx.doi.org/10.1115/1.2899530.

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Shear constitutive relations of a first-order shear deformation theory for laminated anisotropic shells and plates are formulated following Mindlin’s procedure for homogeneous isotropic plates. Because thickness-shear motions for laminated anisotropic thickness profiles may not be polarized in planes normal to the reference surface, the concept of generalized principal shear planes is needed. These planes are established by least-squares minimization of the out-of-plane motions of infinitely long thickness-shear waves based on an elasticity analysis of the profile. Typical shear rigidities for a variety of laminated composite and sandwich profiles are given. In a companion paper, the efficacy of this form of shear constitutive relations in predicting the response of a class of laminated composite and sandwich cylindrical shells is demonstrated.

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Fang, Yang, and Guo. "Hydrodynamic Performance of Submerged Plates During Focused Waves." Journal of Marine Science and Engineering 7, no. 11 (October 31, 2019): 389. http://dx.doi.org/10.3390/jmse7110389.

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Submerged horizontal plates are widely employed in research of wave structure interaction as a simplification of coastal and ocean engineering structures. The hydrodynamic performance of submerged horizontal plates under focused waves has been seldom reported. Based on potential flow theory, this paper presents a general solution of the hydrodynamic pressure and wave forces exerted on submerged plates by a focused wave group. An existing experiment and two limiting cases are used to validate the accuracy of the present analytical model. With the validated model, the effect of wave properties and the configuration of the wave structure system on the hydrodynamic performance of submerged plates are investigated. It is found that the hydrodynamic performance of submerged horizontal plates varies with incident focused wave with different peak frequencies. The structural breadth significantly changes the hydrodynamic performance while the structural height has little influence. This paper shows the usefulness of potential flow theory for the preliminary calculation of wave loads on coastal and ocean engineering structures generated by focused waves.

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Loimer, T., G. Machu, and U. Schaflinger. "Inviscid bubble formation on porous plates and sieve plates." Chemical Engineering Science 59, no. 4 (February 2004): 809–18. http://dx.doi.org/10.1016/j.ces.2003.10.020.

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Lou, Ching Wen, Kuo Chen Chang, Chien Teng Hsieh, Tung Lung Kuo, and Jia Horng Lin. "Mechanical Analyses of Repeatedly Processed Polypropylene/Carbon Fiber Composite Plates." Advanced Materials Research 97-101 (March 2010): 1794–96. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.1794.

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Polymer blending was used by adding different proportions (5, 10, 15 and 20 wt %) of the short carbon fiber into the high impact polypropylene (PP) matrix to reinforce the matrix’s mechanical property. The carbon fiber was melt blended with the PP matrix. The mixture was repeatedly processed by the single-screw extrusion into chips, which later became the composite plate by the injection molding machine. In this study, the effect of the repeatedly process on the PP/Carbon fiber composite plate’s mechanical property was examined. The tensile strength of the mixture having one process and six processes were 886 N and 857 N respectively. The impact strength of the composite plates processed for once was 334 J/m while that of the plates processed for six times was 325 J/m. The three-point bending of the composite plate processed once was 30 MPa when that of the plate processed for six times was 28 MPa. The more the times of the process, the weaker the composite plate’s mechanical property became. The carbon fiber was used to reinforce PP’s mechanical property. This study will be applied in the industry.

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Jayabalan, Jagan, Manju Dominic, Ahmed M. Ebid, Atefeh Soleymani, Kennedy C. Onyelowe, and Hashem Jahangir. "Estimating the Buckling Load of Steel Plates with Center Cut-Outs by ANN, GEP and EPR Techniques." Designs 6, no. 5 (September 22, 2022): 84. http://dx.doi.org/10.3390/designs6050084.

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Steel plates are used in the construction of various structures in civil engineering, aerospace, and shipbuilding. One of the main failure modes of plate members is buckling. Openings are provided in plates to accommodate various additional facilities and make the structure more serviceable. The present study examined the critical buckling load of rectangular steel plates with centrally placed circular openings and different support conditions. Various datasets were compiled from the literature and integrated into artificial intelligence techniques like Gene Expression Programming (GEP), Artificial Neural Network (ANN) and Evolutionary Polynomial Regression (EPR) to predict the critical buckling loads of the steel plates. The comparison of the developed models was conducted by determining various statistical parameters. The assessment revealed that the ANN model, with an R2 of 98.6% with an average error of 10.4%, outperformed the other two models showing its superiority in terms of better precision and less error. Thus, artificial intelligence techniques can be adopted as a successful technique for the prediction of the buckling load, and it is a sustainable method that can be used to solve practical problems encountered in the field of civil engineering, especially in steel structures.

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Wang, C. M., and G. T. Lim. "Bending Solutions of Sectorial Mindlin Plates from Kirchhoff Plates." Journal of Engineering Mechanics 126, no. 4 (April 2000): 367–72. http://dx.doi.org/10.1061/(asce)0733-9399(2000)126:4(367).

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Pan, Hong Ke, Jiang Chun Hu, and Lin De Yang. "The Principle and Calculation Method of Carbon Fiber Reinforcement for Tunnels and Underground Structures." Applied Mechanics and Materials 94-96 (September 2011): 1247–51. http://dx.doi.org/10.4028/www.scientific.net/amm.94-96.1247.

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There will emerge cracks or damage due to the action of rock pressure or its own shortcomings and low strength for the lining structure in tunnel or underground engineering, especially at the places of excessive bending moment and tensile stress because of bias pressure where concrete will be pull apart for the deficiency of strength even to cause leakage and durability insufficient. Conventional maintenance and reinforce methods are time-consuming and laborious, and the effect is also not ideal. It is simple, timesaving and having a significant and lasting effect to use carbon fiber reinforcement method. This paper studied structure’s failure mechanism and on the basis of that the principle of fiber-plate reinforcement from the angle of structural plastic development, then studied the improvement of structure’s mechanical character and the change of design calculation method for single section of underground structure with carbon fiber plates by using the research method of plane-strain. At the same time, the typical model of integral failure for single section was analyzed and the calculation method and formulae of bearing capacity and reinforcing steel bars were deduced, which remedied the shortfall in the design specification for concrete structure. In the end, by comparing the calculation results of structure with fiber plates and that with not fiber plates based on engineering example, the conclusion that structure’s bearing capacity and capability of resistance to deformation had obvious improvement was obtained.

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Lisboa, Jaime, Jorge Marin, Mario Barrera, and Héctor Pesenti. "Engineering of Fuel Plates on Uranium-Molybdenum Monolithic: Critical Issues." World Journal of Nuclear Science and Technology 05, no. 04 (2015): 274–86. http://dx.doi.org/10.4236/wjnst.2015.54027.

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NOJIMA, Taketoshi. "Formation of Holes in Engineering Ceramic Plates by Press-Working." JSME international journal. Ser. C, Dynamics, control, robotics, design and manufacturing 39, no. 2 (1996): 426–31. http://dx.doi.org/10.1299/jsmec1993.39.426.

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Jockenhoevel, S., G. Zund, S. P. Hoerstrup, A. Schmid, A. Schnell, and M. Turina. "CARDIOVASCULAR TISSUE ENGINEERING WITH FIBRIN GEL IN MICROSTRUCTURED CULTURE PLATES." ASAIO Journal 46, no. 2 (March 2000): 237. http://dx.doi.org/10.1097/00002480-200003000-00344.

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Ursenbach, D. O., R. Vaziri, and D. Delfosse. "An engineering model for deformation of CFRP plates during penetration." Composite Structures 32, no. 1-4 (January 1995): 197–202. http://dx.doi.org/10.1016/0263-8223(95)00026-7.

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46

Xu, Wei, Heng Xie, Jian Li, Fei Xie, and Lei Shi. "Engineering uncertainty analysis of the heat transfer of fuel plates." Nuclear Engineering and Design 402 (February 2023): 112117. http://dx.doi.org/10.1016/j.nucengdes.2022.112117.

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Rezaei, AS, and AR Saidi. "An analytical study on the free vibration of moderately thick fluid-infiltrated porous annular sector plates." Journal of Vibration and Control 24, no. 18 (July 17, 2017): 4130–44. http://dx.doi.org/10.1177/1077546317721416.

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An exact analytical approach based on Mindlin plate theory is considered for free vibration analysis of fluid-saturated porous annular sector plates. The interconnected network of pores is saturated by inviscid fluid and the fluid is trapped in the network. The plate’s radial edges are considered to be simply supported and four auxiliary functions are used to evaluate the natural frequencies of porous plates under undrained condition. The mechanical properties of the material are considered to vary through the thickness by expressing shear modulus and density in terms of a simple cosine rule in case of plates with pores free of fluid. The present method is validated by comparing it with the results of other accurate solutions found in the literature. The influence of the coefficient of plate porosity, geometrical parameters as well as the effect of fluid on natural frequency response of porous annular sector plates under various boundary conditions are comprehensively investigated. It is found that the presence of fluid in the interconnected network of pores causes the fundamental natural frequency to increase. The method proposed in this paper may provide useful information for the future assessments of the dynamic response of porous structures when fluid–solid interaction effects are fully taken into account.

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Xie, CN, and XF Li. "Optimal location of ring support for heavy Mindlin plates under axisymmetric loading." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 232, no. 7 (March 24, 2017): 1270–79. http://dx.doi.org/10.1177/0954406217700182.

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Bending of an annular thick plate resting on a ring support is analyzed under the action of power-law axisymmetric loading. A single governing differential equation for the Mindlin plate theory is derived. By solving associated boundary value problem, the optimal support location is determined to achieve minimizing the maximum deflection of a moderately thick circular or annular plate. The minimum sag of a heavy solid circular plate with or without the center support under self-weight is also analyzed. In addition to applied loading and the restraint of plate's rims, the optimal location of the ring support is also related to Poisson's ratio and the ratio of inner-to-outer radius. Auxetic plates with negative Poisson's ratio require larger ring support's radius, and conventional plates require smaller ring support's radius. Usually, the optimal support location is closer to the outer rim and far to the inner rim for a plate of self-weight. The obtained results are useful in safety design of circular or annular plates under complicated loading.

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Dusmatov, A. D., and O. U. Mavlonova. "INTERLAYER SHIFTS OF TWO-LAYER COMBINED PLATES TAKING INTO ACCOUNT TEMPERATURE LOADS." International Journal of Advance Scientific Research 02, no. 04 (April 1, 2022): 64–70. http://dx.doi.org/10.37547/ijasr-02-04-12.

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This paper presents the results of research taking into account the stresses and strains of two-layer plates, which differ in terms of physical and mechanical properties, the shear deformations of the layers under the influence of temperature and the transverse displacement and inclination of adhesive joints. At the same time, interlayer displacements and other mechanical characteristics are taken into account in such a way as to allow a sufficiently accurate assessment of the strength and superiority of engineering problems for these engineering problems.

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Ippolito, Nicolò Maria, Ionela Birloaga, Francesco Ferella, Marcello Centofanti, and Francesco Vegliò. "Preliminary Study on Gold Recovery from High Grade E-Waste by Thiourea Leaching and Electrowinning." Minerals 11, no. 3 (February 25, 2021): 235. http://dx.doi.org/10.3390/min11030235.

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The present paper is focused on the extraction of gold from high-grade e-waste, i.e., spent electronic connectors and plates, by leaching and electrowinning. These connectors are usually made up of an alloy covered by a layer of gold; sometimes, in some of them, a plastic part is also present. The applied leaching system consisted of an acid solution of diluted sulfuric acid (0.2 mol/L) with thiourea (20 g/L) as a reagent and ferric sulfate (21.8 g/L) as an oxidant. This system was applied on three different high-grade e-waste, namely: (1) Connectors with the partial gold-plated surface (Au concentration—1139 mg/kg); (2) different types of connectors with some of which with completely gold-plated surface (Au concentration—590 mg/kg); and (3) connectors and plates with the completely gold-plated surface (Au concentration—7900 mg/kg). Gold dissolution yields of 52, 94, and 49% were achieved from the first, second, and third samples, respectively. About 95% of Au recovery was achieved after 1.5 h of electrowinning at a current efficiency of only 4.06% and current consumption of 3.02 kWh/kg of Au from the leach solution of the third sample.

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Journal articles on the topic 'Plates (Engineering)'

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