Journal articles: 'Pressure plate'

1

Novoryta, A., and J. Pfidal. "Pressure differential plate filters." Chemical and Petroleum Engineering 34, no. 12 (December 1998): 758–60. http://dx.doi.org/10.1007/bf02418294.

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Kettenbeil, C., Z. Lovinger, S. Ravindran, M. Mello, and G. Ravichandran. "Pressure-Shear Plate Impact Experiments at High Pressures." Journal of Dynamic Behavior of Materials 6, no. 4 (June 17, 2020): 489–501. http://dx.doi.org/10.1007/s40870-020-00250-y.

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Ko, Young-Hun, Hyong-Doo Jang, and Hyung-Sik Yang. "Direct Measurement of Blast Pressure in Near Field with Lead Plate Blast Pressure Meter." Journal of Korean Society For Rock Mechanics 22, no. 1 (February 29, 2012): 54–59. http://dx.doi.org/10.7474/tus.2012.22.1.054.

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4

Zhang, Zhi Bin, Yu Le Li, and Wan Zheng Ai. "Research on the Effects of Pulse-Pressure on Orifice Plate Cavications." Applied Mechanics and Materials 327 (June 2013): 267–70. http://dx.doi.org/10.4028/www.scientific.net/amm.327.267.

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The flows sudden-shrink and sudden-enlarge when passing orifice plate and streamlines dramatically changes. All these lead to flow velocitys pulse, which leads to pressures pulse. The pressures pulse of flow in the vicinity of orifice plate is decided by orifices geometry. The characteristics of flow pressure pulse in the vicinity of orifice plate and its effects on cavications characteristics are researched in this paper. The researches results show that flow pressures pulse around orifice plate have two peak values: one is at the front of orifice; the other is at the vicinity of waters reattachment point, the latters pulse amplitude is larger than the formers. The pressures pulse has important effects on orifice plates cavications. When computing orifices cavitations number, the effects of pulse-pressure should be considered.

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Roberts, J. C., and G. J. White. "Experimental Results for Bending and Buckling of Rectangular Orthotropic Fiber-Reinforced Plastic Plate Structures." Marine Technology and SNAME News 36, no. 01 (January 1, 1999): 22–28. http://dx.doi.org/10.5957/mt1.1999.36.1.22.

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Solid unstiffened, sandwich, and hat-stiffened rectangular orthotropic fiber-reinforced plastic (FRP) plates were tested in uniaxial in-plane compression and out-of-plane uniform pressure. The two short edges of all plates were clamped, whereas the two long edges of the unstiffened and sandwich plates were simply supported and the same edges of the hat-stiffened plate were left free. Unstiffened plates reached global buckling at about 688 kN (155 klb); however, the plates did not collapse up to the machine load limit of 1334 kN (300 klb). Sandwich plates never reached the overall elastic buckling load; they collapsed in local buckling by face sheet delamination and core shear failure at loads of about 939 kN (211 klb). Hat-stiffened plates exhibited local buckling of the outer unsupported flanges at a load of about 356 kN (80 klb). All hat-stiffened plates collapsed under uniaxial compression due to a combination of face sheet to stiffener delamination followed by hat-stiffener local buckling at loads of about 939 kN (211 klb). The stresses and deflections due to out-of-plane uniform pressure were compared between the unstiffened, sandwich, and hat-stiffened plates from pressures of 6.895 kPa (1 psi) to 34 kPa (5 psi). With the plates under uniaxial compression and out-of-plane uniform pressure simultaneously, there was a general decrease in buckling and collapse with an increase in out-of-plane uniform pressure.

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Ilgamov, M. A., and A. A. Filippov. "RECTANGULAR PLATE BENDING UNDER PRESSURE." Izvestia Ufimskogo Nauchnogo Tsentra RAN, no. 4 (December 11, 2019): 5–10. http://dx.doi.org/10.31040/2222-8349-2019-0-4-5-10.

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Christensen, P., H. Everfelt, N. Bay, and T. Wanheim. "Pressure Distribution in Plate Rolling." CIRP Annals 35, no. 1 (1986): 141–46. http://dx.doi.org/10.1016/s0007-8506(07)61857-5.

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8

Grocholski, B. "Applying pressure to plate tectonics." Science 352, no. 6286 (May 5, 2016): 668–70. http://dx.doi.org/10.1126/science.352.6286.668-s.

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9

David Suits, L., TC Sheahan, EC Leong, S. Tripathy, and H. Rahardjo. "A Modified Pressure Plate Apparatus." Geotechnical Testing Journal 27, no. 3 (2004): 11053. http://dx.doi.org/10.1520/gtj11053.

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Yakovlev, A. A., E. M. Kulikov, and V. A. Shaposhnikov. "High-pressure plate heat exchanger." Chemical and Petroleum Engineering 35, no. 11 (November 1999): 696–99. http://dx.doi.org/10.1007/bf02365733.

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11

Norouzi, Hamed, and Davood Younesian. "Sound Radiation Mitigation of Geometrically Nonlinear Plates Subjected to Subsonic Airflow." Mathematical Problems in Engineering 2021 (July 20, 2021): 1–12. http://dx.doi.org/10.1155/2021/3090958.

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This paper gives a theoretical analysis to obtain and reduce the acoustic pressure generated from plates with geometric nonlinearities subjected to subsonic airflow and external excitation. von-Kármán assumptions are applied considering the nonlinear terms in strain-displacement relations. Airflow passing through the plate is considered as an incompressible, irrotational, and inviscid flow. Galerkin’s method is employed to acquire the governing equations of time-dependent coefficients. Multiple Time Scale Method (MTSM) is then used to obtain the response of the plate. Suppressing undesirable vibration is carried out using an optimal tuned mass damper (TMD) system and an analytical solution is proposed based on Laplace transform and Adomian Decomposition Method (ADM). The acoustic pressure received from the plate is calculated by solving the Rayleigh integral using Boundary Element Method (BEM). A parametric study is carried out, and the effects of the flow speed, the aspect ratio, the thickness of the plate, the material of the plate, the forcing frequency, and the effectiveness of the designed TMD system on the sound pressure are examined. According to the results, using the TMD system reduces the amplitudes of the plate vibrations and, consequently, reduces the acoustic pressure around the vibrating plate. In this study, the passive control strategy leads to a significant decrease in the sound pressure level (about 35%) in some airflow speeds. Results show good efficiency in the control strategy. It is also found that the acoustic pressure generated from steel plates is significantly larger than that generated from aluminum plates. Moreover, increasing the aspect ratio and the plate thickness reduces the acoustic pressure. On the other hand, the external excitations with lower frequencies and the airflows with higher densities can generate lower sound pressures around the plate.

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Hyun-Seok, Noh, Cho Jong-Rae, and Song Seung-Hun. "Plate Pack Structural Integrity Analysis for Plate and Shell Heat Exchangers at High Temperatures and Pressures." Advances in Mechanical Engineering 12, no. 2 (February 2020): 168781401990124. http://dx.doi.org/10.1177/1687814019901244.

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Heat exchangers capable of withstanding high temperature and pressure are required to achieve increased thermal efficiency and compactness. A welded plate and shell heat exchanger, developed for applications involving pressures up to 150 bar and temperatures up to 600 °C, has exhibited advantages that allow a more wide use of heat exchangers. However, few studies have tested the structural integrity of the plate pack of this design. In this paper, the structural integrity of the heat transfer pack was tested using finite element analysis. Elastic and elastic-plastic models were applied for one set of heat transfer plates, while layers of two and four plates were used to verify the effect of the boundary conditions. The plate results were evaluated according to the ASME Boiler and Pressure Vessel Code, Section VIII Division 2. Finally, the function of the end plate in the plate packs was numerically studied.

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13

M. Patil, Shradha. "Lean Manufacturing of Pressure Valve Plate." IOSR Journal of Engineering 4, no. 2 (February 2014): 01–11. http://dx.doi.org/10.9790/3021-04220111.

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Dean, S. W., Kunsun Yoo, and Harianto Rahardjo. "Modification of Volumetric Pressure Plate Extractor." Journal of ASTM International 7, no. 9 (2010): 103075. http://dx.doi.org/10.1520/jai103075.

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15

Tanner, Phillip, John Gorman, and Eph Sparrow. "Flow–pressure drop characteristics of perforated plates." International Journal of Numerical Methods for Heat & Fluid Flow 29, no. 11 (November 4, 2019): 4310–33. http://dx.doi.org/10.1108/hff-01-2019-0065.

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Purpose The purpose of this study is to quantify the relationship between the fluid flow and pressure drop for perforated plates. The homogenization of non-uniform fluid flows is often accomplished by passing the fluid through perforated plates. The underlying principle for the accomplishment of flow homogenization is a tradeoff of pressure drop for flow uniformity. Design/methodology/approach The investigation, implemented by numerical simulation, is based on turbulent flow in pipes and across perforated plates. The approach is as follows: (a) to devise a model to determine pressure drop’s fluid flow information from a single-aperture, (b) to obtain this information for apertures of different shapes, (c) to determine this type of information for perforated plates situated in a circular pipe, (d) to compare the entire perforated-plate pressure drop with that for a single-aperture modular and (e) to analyze two identical perforated plates in series. Findings The pressure drop results for the single-aperture modular model agreed very well with those for a whole perforated plate in a round pipe, therefore negating the need to simulate the more complex situation. In addition to the parametric study with aperture shape and Reynolds number, porosities (20-60 per cent) and plate thicknesses were also varied. The results obtained here compared favorably with experimental data. Originality/value This work demonstrates an efficient method for analyzing and obtaining useful pressure drop information for perforated plates. For the first time, the porous media approach for modeling perforated plates is compared directly to complete, full-scale perforated plate applications and identical plates in series.

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16

Teyssandier, R. G., and Z. D. Husain. "Experimental Investigation of an Orifice Meter Pressure Gradient." Journal of Fluids Engineering 109, no. 2 (June 1, 1987): 144–48. http://dx.doi.org/10.1115/1.3242634.

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Wall and plate pressure gradients were investigated in a 3.5 in. (89 mm) air flow orifice meter facility for 3 orifice plates covering a pipe Reynolds number range of 21,000 to 160,000. The influence of the orifice plate on the upstream wall pressure gradient extended to 0.62D location. It was also found that the pressure gradient is a weak function of the orifice plate β ratio. The downstream location of the minimum pressure point located at about 3.3 dam heights. The pressure gradient on the face of the orifice plate shows that the deflection calculation based on any differential pressure taps is conservative.

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17

Safitra, Arrad Ghani. "Analisa Pengaruh Bentuk Impingement Plate Terhadap Perpindahan Panas Pada Zona Desuperheating High Pressure Heater." Jurnal Teknik Mesin 14, no. 1 (June 8, 2021): 11–15. http://dx.doi.org/10.30630/jtm.14.1.420.

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High Pressure Heater (HPH) are tools that used to improve the efficiency of boiler. HPH utilizes hot steam from turbine extraction as heating medium before entering into the economizer in boiler. In the industry, High Pressure Heater is one of the tools that includes a heat exchanger. To prevent from several problems, some of the industries applying a plate that called impingement plate. This plate placed on the shell side Steam inlet of High Pressure Heater with the function to protect the tube facing the directly the shell side input flow. To determine the effect of adding impingement plates on heat transfer that occurs in the desuperheating zone, a simulation was performed using CFD software with variations of conventional flat plates, 4 plates, and inclined plates. From the simulation results using CFD software it is known that after the addition of the impingement plate, the largest heat transfer value in the desuperheating zone is found in the inclined plate geometry followed by the 4 plate geometry and conventional flat plate, with a q value of 9.54 MW; 7.93 MW; and 4.16 MW, respectively. Then for the inclined plate geometry pressure drop value has a small pressure drop plaing value, which is equal to 30.04 kPa.

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18

Nakaiwa, Masaru, Masaru Owa, Takaji Akiya, Shigetake Kawasaki, Masahito Sato, Veerapot Lueprasitsakul, and Takeichiro Takamatsu. "Operating pressure of a plate-to-plate heat-integrated distillation column." KAGAKU KOGAKU RONBUNSHU 14, no. 1 (1988): 63–70. http://dx.doi.org/10.1252/kakoronbunshu.14.63.

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19

KINJO, Yoshio, Minoru YAGA, and Kenyu OYAKAWA. "A212 Pressure and temperature distributions on plate by underexpanded impinging plate." Proceedings of the Thermal Engineering Conference 2005 (2005): 313–14. http://dx.doi.org/10.1299/jsmeted.2005.313.

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20

Phoenix, S. Leigh, A. Kadir Yavuz, Katerina D. Papoulia, and C. Yuen Hui. "Buckling Analysis of Delaminated and Stitched Composite Plate System Under Hygrothermal Pressure." Journal of Engineering Materials and Technology 128, no. 1 (May 13, 2005): 117–22. http://dx.doi.org/10.1115/1.2128428.

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In this study, we develop a model for buckling of a partially delaminated composite plate with transverse stitching to resist out of plane deformations. The model applies to carbon fiber/polyimide matrix composites rapidly heated to around 370 °C, where it is known that steam-induced delamination (the popcorn effect) becomes an issue as the pressures generated approach the tensile strength of the matrix. Thus, a key element is the incorporation of this hygrothermal pressure within the formulation. This complex composite structure is modeled as two adhesively connected, specially orthotropic, rectangular plates, and the delaminations with internal vapor pressure are considered as holes in the adhesive layer. The intact regions of the adhesive layer and the stitches are modeled by continuous and discrete linear mechanical springs, respectively. The energy contributions of each component in the system are expressed in terms of out-of-plane displacements. The boundary conditions are that the system is simply supported along all edges so as to permit a Fourier sine series to approximate the transverse displacements. Application of the energy minimization approach gives a system of algebraic equations to determine the unknown weighting coefficients of the functions describing the transverse deflections of each plate layer. Deformed shapes of the system under axial compressive loads are obtained for different hygrothermally induced pressure conditions so as to show that the model works well. Parametric studies on critical buckling loads are performed for a few stitch and delamination configurations. It is found that stitching through delaminated areas can increase critical buckling loads and alter the sequence of corresponding mode shapes.

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21

Zhang, Zhi Min, Wei Yu, and Qing Wu Cai. "Control Basis for Cooling Rate of Plates during Roller Quenching in High-Pressure Zone." Advanced Materials Research 538-541 (June 2012): 2090–94. http://dx.doi.org/10.4028/www.scientific.net/amr.538-541.2090.

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A basis based on temperature field is developed to control the cooling rate of plates during roller quenching in high-pressure zone. In order to determine the optimal cooling rate of plate during roller quenching, temperature field of SPV490 plate during quenching was calculated. Then a formula for calculating cooling rate of the center for plate at a certain cooling intensity during roller quenching in high-pressure zone was put forward and the control basis for cooling rate of plate during roller quenching in high-pressure zone was suggested. The cooling rates and corresponding heat transfer coefficients of SPV490 plates with different thickness during roller quenching in high-pressure zone were determined with the given basis.

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22

Ogawa, Keita, Yuichi Yasumoto, Mitsuhiro Matsumoto, and Hidenobu Wakabayashi. "Quasi Two-Dimensional Evaporation and Boiling Under Reduced Pressure." International Journal of Air-Conditioning and Refrigeration 25, no. 01 (March 2017): 1750003. http://dx.doi.org/10.1142/s2010132517500031.

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To study the washing mechanism of laminated plates with solvent vapor, we have experimentally investigated evaporation dynamics of liquid confined between solid plates under reduced pressure. As the test liquid, we use deionized water and several organic compounds. To visualize the fluid motion in the thin gaps, we adopt glass plates. When a test liquid is sandwiched between a normal (float) glass plate and a ground (sand-blasted) one, vertically incident light passes through the plates without much scattering; once the liquid starts to evaporate, dried rough surface of the ground glass scatters the light and we can monitor the flow pattern. Based on the transmitted light intensity, the whole plate area is categorized into three regions; completely wet, completely dry, and semi-dry one; the last one is supposed to be the state that thin liquid film spreads on the plate. In the case of water, many tiny spots of semi-dry region appear and expand at the initial stage, which is probably cavitation of dissolved gas. In organic liquid cases, evaporation seems to start from the edges of the plates. At a later stage, the semi-dry region expands with complicated branching patterns. In all cases, occasional rapid motions of liquid were observed, which correspond to two-dimensional flash boiling. We also investigated the influence of the control pressure, the surface roughness, and the plate deformation.

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Ramesh, K. T., and R. J. Clifton. "A Pressure-Shear Plate Impact Experiment for Studying the Rheology of Lubricants at High Pressures and High Shearing Rates." Journal of Tribology 109, no. 2 (April 1, 1987): 215–22. http://dx.doi.org/10.1115/1.3261341.

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A new plate impact configuration is described for subjecting lubricants to simple shearing motion under uniform hydrostatic pressure. Thin layers (∼50 μm thick) of the lubricant are confined between two hard metallic plates which are subjected to impact by a parallel plate that is inclined relative to the direction of approach in order to induce both pressure and shear loading. Stress waves in the hard plates are monitored by laser interferometry; all measurements are made before unloading waves arrive from the periphery. For approximately one microsecond the compressed lubricant is subjected to a simple shearing motion and a continuous record of the shear stress and shear rate is obtained. Results presented for the lubricant 5P4E at pressures of 1-5 GPa and shear rates of approximately 9 × 105 s−1 show good agreement with available data on the dependence of the limiting shear stress on the confining pressure at lower pressures and lower shearing rates.

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Teng, J. G., and J. M. Rotter. "Nonsymmetric Buckling of Plate-End Pressure Vessels." Journal of Pressure Vessel Technology 111, no. 3 (August 1, 1989): 304–11. http://dx.doi.org/10.1115/1.3265679.

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Small cylindrical pressure vessels are often constructed with a circular flat plate end closure. The end-plate undergoes large deformations under working loads. High local stresses develop at the junction between the cylinder and end-plate, causing yield under proof loading. The compressive circumferential stresses at the junction may lead to bifurcation into a nonsymmetric deformation mode. This study explores the geometrically nonlinear elastic-plastic behavior of plate-end pressure vessels. The form of the axisymmetric prebuckling path is investigated, showing the strongly stiffening nature of the response. Bifurcation of the closure into a nonsymmetric mode is then studied.

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Zhang, ZhongQiang, HongWu Zhang, and HongFei Ye. "Pressure-driven flow in parallel-plate nanochannels." Applied Physics Letters 95, no. 15 (October 12, 2009): 154101. http://dx.doi.org/10.1063/1.3247892.

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Abbrescia, M., E. Bisceglie, G. Iaselli, S. Natali, G. Pugliese, and F. Romano. "Resistive plate chambers performances at low pressure." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 394, no. 3 (July 1997): 341–48. http://dx.doi.org/10.1016/s0168-9002(97)00681-5.

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Suits, L. D., T. C. Sheahan, Natalia Perez-Garcia, Sandra L. Houston, William N. Houston, and J. Manuel Padilla. "An Oedometer-Type Pressure Plate SWCC Apparatus." Geotechnical Testing Journal 31, no. 2 (2008): 100964. http://dx.doi.org/10.1520/gtj100964.

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Cakmak, T., Z. Cagatay Oter, and O. Surmen. "Lightweight innovative composite dry clutch pressure plate." IOP Conference Series: Materials Science and Engineering 1070, no. 1 (February 1, 2021): 012117. http://dx.doi.org/10.1088/1757-899x/1070/1/012117.

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Ji, Guang Kai, Xiao Liu, and Zhao Qun Du. "Analysis on Plane and Ball Compression Behaviour of Spacer Fabric." Advanced Materials Research 332-334 (September 2011): 1049–52. http://dx.doi.org/10.4028/www.scientific.net/amr.332-334.1049.

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In present paper, the compression force and strain curve for both plane plate and spherical ball compressions are conducted, where the compression stress and strain curve in plane plate compression is calculated and divided into three linear sections. Each linear region has corresponding compression modulus. In addition, three compression characters of both plate plane and spherical ball compressions are featured as compression work, maximum pressure/force and linear degree. Correlations between the three characters of compression property show that there exist high correlations between compression work and maximum pressure/force for plane plated and spherical ball compression. Moreover, effects of sample size and shape on compression properties are also conducted, and we find that there are no significant effects and the three compression characters are stable in both plane plate and spherical ball compression. Finally, the explicit formula derived in the Part I of this series for the spherical ball compression is used, and the ball compression force and strain curves are simulated based on the compression stress and strain curves based on plane plate compression tests. The comparing results between measured and theoretical results indicate that the theoretical model is effective to simulate ball compression behaviour of general knitted spacer fabrics. It is highly helpful in designing and predicting compression force of knitted spacer fabric for virtual processing of textile materials.

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Phong, Ta Hong, Vu Van Tan, and Mac Van Giang. "Ultimate Strength Analysis of Stiffened Plate Under Longitudinal Compression, Transverse Compression and Lateral Pressure." International Journal of Engineering Research 4, no. 10 (October 1, 2015): 562–65. http://dx.doi.org/10.17950/ijer/v4s10/1010.

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31

Erdas, Andrea. "Magnetic field corrections to the repulsive Casimir effect at finite temperature." International Journal of Modern Physics A 31, no. 07 (March 2, 2016): 1650018. http://dx.doi.org/10.1142/s0217751x16500184.

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I investigate the finite temperature Casimir effect for a charged and massless scalar field satisfying mixed (Dirichlet–Neumann) boundary conditions on a pair of plane parallel plates of infinite size. The effect of a uniform magnetic field, perpendicular to the plates, on the Helmholtz free energy and Casimir pressure is studied. The [Formula: see text]-function regularization technique is used to obtain finite results. Simple analytic expressions are obtained for the zeta function and the free energy, in the limits of small plate distance, high temperature and strong magnetic field. The Casimir pressure is obtained in each of the three limits and the situation of a magnetic field present between and outside the plates, as well as that of a magnetic field present only between the plates is examined. It is discovered that, in the small plate distance and high temperature limits, the repulsive pressure is less when the magnetic field is present between the plates but not outside, than it is when the magnetic field is present between and outside the plates.

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Ravindran, Suraj, Vatsa Gandhi, Zev Lovinger, Michael Mello, and Guruswami Ravichandran. "Dynamic Strength of Copper at High Pressures Using Pressure Shear Plate Experiments." Journal of Dynamic Behavior of Materials 7, no. 2 (January 12, 2021): 248–61. http://dx.doi.org/10.1007/s40870-020-00287-z.

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Rabbani, K. Siddique-e., SM Zahid Ishraque, M. Shahedul Islam, and Rhaad Muasir Rabbani. "Improvisation of an Optical Pressure Sensor Based Dynamic Foot Pressure Measurement System." Bangladesh Journal of Medical Physics 4, no. 1 (April 20, 2013): 51–58. http://dx.doi.org/10.3329/bjmp.v4i1.14687.

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Dynamic foot pressure measurement is necessary particularly for diabetic patients to prevent ulcers, eventually leading to gangrene and amputation. The present work reports a low cost optical sensing system for the above, suitable for the Third World. It uses a horizontally placed transparent Acrylic plate with a webcam placed below facing upwards. A white paper, backed by a black adhesive plastic sheet, covered the whole plate on the top. Light from a tubular fluorescent lamp entered the acrylic plate from a side and traversed the thickness through total internal reflection. At points of pressure applied from the top, the air between the paper and the acrylic plate got displaced and caused breakdown of total internal reflection. The scattered light rays from the white sheet were recorded by the webcam. Computer software on Java platform was developed to grab and analyse video data to display dynamic pressure distribution in artificial colour contours. Approximate pressure calibration was obtained using static and dynamic values obtained from subjects with normal and abnormal foot pressures. Time graphs of pressure at user chosen points were also provided. The developed system worked with satisfaction and is being used for clinical assessment regularly. DOI: http://dx.doi.org/10.3329/bjmp.v4i1.14687 Bangladesh Journal of Medical Physics Vol.4 No.1 2011 51-58

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Chi, Y., T. J. Pence, and H. Tsai. "Plane stress analysis of a shape memory annular plate subject to edge pressure." Journal de Physique IV (Proceedings) 112 (October 2003): 245–48. http://dx.doi.org/10.1051/jp4:2003875.

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Thanga, Tharani, K. S. Sivakumaran, and Bassam Halabieh. "Stiffened plates of rectangular industrial ducts." Canadian Journal of Civil Engineering 40, no. 4 (April 2013): 334–42. http://dx.doi.org/10.1139/cjce-2012-0470.

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This paper deals with the design of steel plate elements of rectangular industrial ducts. Because of the practical aspect ratios and the stiffener arrangements, such a plate element is often treated as a long plate (one way slab), fixed supported at the edges and subjected to transverse pressure. The design pressure and the deflection limit determine the plate thickness and the stiffener spacing. Current design practice considers the geometrical nonlinearity, however, uses the strength criterion of first yield. This investigation postulates that consideration of partial yielding of the plate may result in an economical design option, while meeting the serviceability criterion. The study is based on nonlinear finite element analyses of long plates subjected to increasing transverse pressure. Dimensionless parameters that characterize the behavior of such plates were identified and varied in a parametric study. Based on these analyses, design equations have been established for plate thickness and for stiffener spacing corresponding to three different scenarios namely; 0%, 16.5%, and 33% of through thickness partial yielding of the plate. Results show that allowing for 16.5% yielding results in 50% increase in stiffener spacing, at the expense of about 40% increase in deflections. Partially yielding plates can satisfy the serviceability limits states and can lead to economical stiffened plate systems for large rectangular industrial ducts.

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Lee, Choon Yeol, Il Sup Chung, and Young Suck Chai. "12Finite Element Analysis of an Automobile Clutch System." Key Engineering Materials 353-358 (September 2007): 2707–11. http://dx.doi.org/10.4028/www.scientific.net/kem.353-358.2707.

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A pressure plate, a component of the clutch system, was analyzed by two-dimensional and three-dimensional finite element method under three major load conditions of thermal loading due to temperature distribution, centrifugal force and contact pressure of diaphragm spring. The results show that the effects of thermal loading and contact pressure of diaphragm spring are important, which suggests the direction of design improvement. A hub plate was also analyzed with finite element modeling. A stress concentration occurs around the fillet region around the window in the plate where the fracture analysis is executed to find the stress intensity factors. These results will be used as the fundamental data for design improvement of the shapes of pressure plates and hub plates.

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Chen, Rui, Hong Li, Jian Wang, and Chao Chen. "Effects of Plate Structure and Nozzle Diameter on Hydraulic Performance of Fixed Spray Plate Sprinklers at Low Working Pressures." Transactions of the ASABE 64, no. 1 (2021): 231–42. http://dx.doi.org/10.13031/trans.13958.

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HighlightsThe hydraulic performance of fixed spray plate sprinklers (FSPS) was evaluated at low working pressures.The effects of geometric structure on the hydraulic performance of FSPS were studied.A model was developed for estimating the application depth and uniformity of FSPS under a linear-move system.The recommended values of the most effective sprinkler combination spacing for FSPS are given.Abstract. Reducing the working pressure of sprinklers can effectively reduce the energy consumption of sprinkler irrigation systems. Fixed spray plate sprinklers (FSPS) have a simple structure, and their working pressure has potential to be reduced to 40 kPa. To evaluate the hydraulic performance of FSPS at low pressure, an experiment was conducted to investigate the effects of working pressure, plate structure, and nozzle diameter on sprinkler flow rate, wetted radius, and water application distribution. Two plates (FSPSB and FSPSY) and five nozzles were used in the tests. The cumulative water application depth and irrigation uniformity coefficient were calculated under a linear-move system. The results show that sprinklers with larger nozzle diameters and higher working pressures produce greater coefficients of discharge. The wetted radius gradually increases with the increase in working pressure and nozzle diameter. Two empirical equations for estimating the wetted radius of the two plates are proposed. The FSPSB has a concave trajectory structure that produces a longer wetted radius than the FSPSY, which has a flat trajectory structure. Along the wetted radius, the water application rate increases and then decreases, with a peak value at a certain distance. For the FSPSB, the peak rate of water application decreases with increasing working pressure. However, the FSPSY shows the opposite trend, with the maximum peak value occurring at the highest working pressure of 250 kPa. The water distribution for a single FSPSB sprinkler is discrete due to the greater water dispersal caused by the deeper grooves in the plate. In contrast, a single FSPSY sprinkler provides a more uniform water distribution. The irrigation uniformity of the FSPSY is higher than that of the FSPSB. The recommended values for the most effective sprinkler combination spacings for FSPSB and FSPSY are given in this article. The results may be useful for selecting appropriate sprinklers in hydraulic design procedures. Keywords: Cumulative spray water depth, Irrigation uniformity, Sprinkler irrigation, Water distribution, Working condition.

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38

Filippov, Sergei B. "Buckling of the cylindrical shell joint with annular plates under external pressure." Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy 8, no. 2 (2021): 282–94. http://dx.doi.org/10.21638/spbu01.2021.208.

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By means of an asymptotic method the buckling under the uniform external pressure of the thin cylindrical shell supported by identical annular plates is analyzed. Boundary conditions on an internal parallel of the shell joined to a thin plate are obtained. At the edges of the shell the free support conditions are introduced. We seek the approximate solutions of the eigenvalue problem as a sum of slowly varying functions and edge effect integrals. On a parallel, where the plate joint with the shell, the main boundary conditions for the formulation of an eigenvalue problem of zero approximation are obtained. This problem describes also vibrations of a simply supported beam stiffened by springs. Its solution we seek as linear combinations of Krylov’s functions. It is shown, that in zero approximation it is possible to replace a narrow plate with a circular beam. At increase in width of a plate stiffness of the corresponding spring tend to a constant. It occurs because of localization plate deformations near to the internal edge of a plate. As an example the dimensionless critical pressure for the case when the shell is supported by one plate is found. The replacement of a narrow plate with a circular beam does not lead to appreciable change of the critical pressure, however for a wide plate the beam model gives the overestimated value of critical pressure.

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39

Il’gamov, M. A., and V. E. Moiseeva. "Bending of a Round Plate under Gas Pressure." Mechanics of Solids 54, no. 4 (July 2019): 551–58. http://dx.doi.org/10.3103/s0025654419040083.

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40

Duan, Zhipeng, Hao Ma, Boshu He, Liangbin Su, and Xin Zhang. "Pressure Drop of Microchannel Plate Fin Heat Sinks." Micromachines 10, no. 2 (January 24, 2019): 80. http://dx.doi.org/10.3390/mi10020080.

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The entrance region constitutes a considerable fraction of the channel length in miniaturized devices. Laminar slip flow in microchannel plate fin heat sinks under hydrodynamically developing conditions is investigated semi-analytically and numerically in this paper. The semi-analytical model for the pressure drop of microchannel plate fin heat sinks is obtained by solving the momentum equation with the first-order velocity slip boundary conditions at the channel walls. The simple pressure drop model utilizes fundamental solutions from fluid dynamics to predict its constitutive components. The accuracy of the model is examined using computational fluid dynamics (CFD) simulations and the experimental and numerical data available in the literature. The model can be applied to either apparent liquid slip over hydrophobic and superhydrophobic surfaces or gas slip flow in microchannel heat sinks. The developed model has an accuracy of 92 percent for slip flow in microchannel plate fin heat sinks. The developed model may be used to predict the pressure drop of slip flow in microchannel plate fin heat sinks for minimizing the effort and expense of experiments, especially in the design and optimization of microchannel plate fin heat sinks.

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Butler, M. A., M. K. Hill, J. J. Spates, and S. J. Martin. "Pressure sensing with a flexural plate wave resonator." Journal of Applied Physics 85, no. 3 (February 1999): 1998–2000. http://dx.doi.org/10.1063/1.369196.

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42

NAKAOKA, Tsutomu, Tetsuya NISHIDA, and Junya ICHINOSE. "Study of Pressure Loss on Vertical Flat Plate." Proceedings of Conference of Chugoku-Shikoku Branch 2004.I (2004): 95–96. http://dx.doi.org/10.1299/jsmecs.2004.i.95.

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43

Saffer, D. "Pore Pressure at Plate Boundaries: Insights from Modeling." Scientific Drilling SpecialIssue (November 1, 2007): 20–23. http://dx.doi.org/10.5194/sd-specialissue-20-2007.

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44

Kudenatti, Ramesh B., and Vishwanath B. Awati. "Solution of pressure gradient stretching plate with suction." Applied Mathematics and Computation 210, no. 1 (April 2009): 151–57. http://dx.doi.org/10.1016/j.amc.2008.12.066.

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45

Uddin, Md Wahhaj. "Large deformation analysis of plate-end pressure vessels." International Journal of Pressure Vessels and Piping 29, no. 1 (January 1987): 47–65. http://dx.doi.org/10.1016/0308-0161(87)90038-x.

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46

Shen, Jun, Jianguo Li, Hengzhi Fu, and Junyi Su. "Analysis of electromagnetic pressure on thin plate melt." Chinese Science Bulletin 44, no. 23 (December 1999): 2141–45. http://dx.doi.org/10.1007/bf03182696.

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47

Im, S., and R. T. Shield. "Elastic Deformations of Strips and Circular Plates Under Uniform Pressure." Journal of Applied Mechanics 53, no. 4 (December 1, 1986): 873–80. http://dx.doi.org/10.1115/1.3171874.

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A consistent theory for linear elastic behavior in which the strains are small but in which the displacements and rotations can be large is applied to the bending of a long rectangular plate and of a circular plate by uniform pressure. Within the range of small-strain, linear elastic behavior, the theory provides solutions for all slenderness ratios of the plates and magnitudes of the loading. Thus the theory bridges the gap between the classical theory and the nonlinear structural theory of Fo¨ppl and von Ka´rma´n. The results show that the von Ka´rma´n equations provide accurate solutions for thin plates for which deflections are not small.

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Karami Moghadam, Mehdi, Ata Amini, Marlinda Abdul Malek, Thamer Mohammad, and Hasan Hoseini. "Physical Modeling of Ski-Jump Spillway to Evaluate Dynamic Pressure." Water 11, no. 8 (August 15, 2019): 1687. http://dx.doi.org/10.3390/w11081687.

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The effects of changes in the angle of pool impact plate, plunging depth, and discharge upon the dynamic pressure caused by ski-jump buckets were investigated in the laboratory. Four impact plate angles and four plunging depths were used. Discharges of 67, 86, 161, and 184 L/s were chosen. For any discharge, plunging depth and impact plate angle were regulated, and dynamic pressures were measured by a transducer. The results showed that with the increase in the ratio of drop length of the jet to its break-up length (H/Lb), and with an increase in the impact plate angle, the mean dynamic pressure coefficient decreased. An inspection of the plunging depth (Y) ratio to the initial thickness of the jet (Bj) revealed that when Y/Bj > 3, the plunging depth of the downstream pool reduced dynamic pressure. At the angle of 60°, the dynamic pressure coefficient due to increasing in plunging depth varied from 34% to 95%.

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Sanfilippo, PB, RM Stess, and KM Moss. "Dynamic plantar pressure analysis. Comparing common insole materials." Journal of the American Podiatric Medical Association 82, no. 10 (October 1, 1992): 507–13. http://dx.doi.org/10.7547/87507315-82-10-507.

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A comparison of five commonly used insole materials (Spenco, PPT, Plastazote, Nickelplast, and Pelite) was made to evaluate their effectiveness in reducing plantar vertical pressures on human subjects during walking. With the use of the EMED-SF pedograph force plate system, dynamic measures of vertical force, force-time integral, peak plantar pressure, pressure-time integral, and area of foot-to-ground contact were compared with the force plate covered with each of the insole materials and without any interface material.

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Torii, Shuichi. "Flow Visualization and Thermal-Fluid Flow Phenomenon in Single Plate Heat Exchanger with Various Plate Shapes Formed by Shock Processing Method." Materials Science Forum 673 (January 2011): 35–39. http://dx.doi.org/10.4028/www.scientific.net/msf.673.35.

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The aim of the present study is to improve heat transfer performance and to attenuate pressure drop in plate heat exchanger with the different plate shapes. In this study, the single plate model of the plate heat exchanger is made and the thermal fluid flow characteristics in the narrows channel are examined for two different shaped plates, i.e., separate herringbone and plover patterns and the results are compared with that of flat or herringbone plate. In addition, the flow of the fluid with the surface of the rugged plate in the plate heat exchanger was visualized by tuft method. It is found that if the separate herringbone plate whose pith is 2 is employed, heat transfer performance is substantially enhanced for the high Reynolds number region, while pressure drop is suppressed.

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Journal articles on the topic 'Pressure plate'

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