Academic literature on the topic 'Radiation effect of moving magnet'

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Journal articles on the topic "Radiation effect of moving magnet"

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Vijaya, Kolli, Gurrampati Venkata Ramana Reddy, and Oluwole Daniel Makinde. "Soret Effect on MHD Casson Fluid Flow Past a Moving Vertical Plate in the Presence of Radiation and Chemical Reaction." Diffusion Foundations 26 (March 2020): 86–103. http://dx.doi.org/10.4028/www.scientific.net/df.26.86.

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In the Present study Soret effect on Magneto Hydro dynamic (MHD) steadytwo-dimensional free convective Casson fluid flow past a moving vertical plate in the presence of thermal radiation and chemical reaction is analysed. The governing partial differential equations of the flow, momentum, energy and mass are transformed into ordinary differential equations using suitable similarity variables. These Non-linear systems of ordinarydifferential equations are solved using Runge - Kutta method along with shooting technique. The effects of various parameters on the velocity, temperature and concentration are discussed. The Skin-friction, Nusselt number and Sherwood number are discussed in detail.
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Mohd Zokri, S., N. S. Arifin, A. R. Mohd Kasim, and Mohd Zuki Salleh. "Passive Control of Nanoparticles on MHD Jeffrey Nanofluid past a Convectively Heated Moving Plate with Thermal Radiation." International Journal of Automotive and Mechanical Engineering 15, no. 4 (December 24, 2018): 5775–92. http://dx.doi.org/10.15282/ijame.15.4.2018.5.0442.

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A theoretical study is conducted to investigate the thermal radiation effect on boundary layer flow of magneto-hydrodynamic (MHD) Jeffrey nanofluid across a moving plate with convective boundary condition. More physically acceptable model of passively controlled wall nanoparticle concentration is executed. Similarity transformation variables are utilised to transform the partial differential equations to non-linear ordinary differential equations. An effective Runge-Kutta Fehlberg Fourth-Fifth order (RKF45) method is employed to solve the obtained equations numerically. Validation of the present results has been made with the existing studies under the limiting cases and the results are found to be in a good agreement. Numerical solutions for several pertinent parameters are provided graphically over specified distributions. The results indicate that the temperature profile intensifies attributable to the increasing thermal radiation parameter. Besides, the increase of Brownian motion parameter pronounces negligible effect on the temperature profile, whereas nanoparticle concentration profile declines. Moreover, increment in the thermophoresis diffusion parameter results in the escalation of the temperature and nanoparticle concentration profiles.
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Mamatha, B., M. C. Raju, and S. V. K. Varma. "Thermal Diffusion Effect on MHD Mixed Convection Unsteady Flow of a Micro Polar Fluid Past a Semi-Infinite Vertical Porous Plate with Radiation and Mass Transfer." International Journal of Engineering Research in Africa 13 (December 2014): 21–37. http://dx.doi.org/10.4028/www.scientific.net/jera.13.21.

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The present study investigates the thermal diffusion and radiation effects on magneto hydro dynamic mixed convection flow of a micro polar fluid past an infinite, steadily moving porous plate with variable suction and constant viscosity. The equations of continuity, linear momentum, angular momentum, energy and diffusion, which govern the flow field, are solved by using a regular perturbation method. The behavior of the velocity, micro rotation, temperature, concentration, skin-friction, Nusselt number, and Sherwood number has been discussed for variations in the physical parameters with the help of the graphs.
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RASHIDI, MOHAMMAD MEHDI, and ESMAEEL ERFANI. "A NOVEL ANALYTICAL METHOD TO INVESTIGATE EFFECT OF RADIATION ON FLOW OF A MAGNETO-MICROPOLAR FLUID PAST A CONTINUOUSLY MOVING PLATE WITH SUCTION AND BLOWING." International Journal of Modeling, Simulation, and Scientific Computing 01, no. 02 (June 2010): 219–38. http://dx.doi.org/10.1142/s1793962310000146.

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In this article, Differential Transform Method (DTM) and Padé approximants (DTM-Padé), are considered for finding analytical solutions of a magneto-micropolar flow past a continuously moving plate with suction and blowing and radiation effect. This technique is extended to give solutions for system of nonlinear ordinary differential equations with boundary conditions at infinity. The analytic solutions of the system of nonlinear ordinary differential equations are constructed in the ratio of two polynomials. Graphical results are presented to investigate influence of the radiation parameter, magnetic field parameter, Prandtl number, coupling constant parameter and the surface mass transfer parameter on velocity profiles, angular velocity profiles and temperature profiles. In addition, the numerical method is used to investigate the validity of this analytical method, an excellent agreement is observed between the solutions obtained from the DTM-Padé and numerical results. The results reveal that the DTM-Padé is very effective and convenient for solving engineering problems especially for boundary-layer problems.
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Zigta, Binyam. "Thermal Radiation, Chemical Reaction and Viscous Dissipation Effects on Unsteady MHD Flow of Viscoelastic Fluid Embedded in a Porous Medium." Budapest International Research in Exact Sciences (BirEx) Journal 1, no. 3 (July 27, 2019): 35–57. http://dx.doi.org/10.33258/birex.v1i3.346.

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In this paper the effect of unsteady, incompressible, magneto hydrodynamics filled with electrically conducting viscoelastic fluid in an infinite vertical Couette porous channel wall embedded in a porous medium is analyzed. A uniform magnetic field is applied perpendicular to the channel wall. The temperature of the moving channel wall varies periodically and the temperature difference between the two infinite vertical channel walls is high due to thermal radiation. The Eckert number is the ratio of the kinetic energy of the flow to the temperature difference of the channel walls. The solution of the governing equations is obtained using regular perturbation techniques. These techniques are used to transform partial differential equations that are difficult to solve in closed form. These equations are reduced to a set of ordinary differential equations in dimensionless form so can be solved analytically. The effects of physical parameters Viz. Hartmann number, Viscoelastic parameter, Eckert number, Permeability of porous medium, Chemical reaction parameter, thermal Grashof number for heat transfer, modified Grashof number for mass transfer, frequency parameter and Schmidt number on flow parameters Viz., velocity, temperature and concentration has been discussed and shown graphically. The theoretical results have been supported by MATLAB code simulation study. The results show that velocity decreases with increasing values of frequency, Hartmann number and viscoelastic parameter but reverse effect is observed with temperature, thermal Grashof number, modified Grashof number and permeability of porous medium. Furthermore, The result shows that an increment in both thermal radiation parameter and Eckert number results in decrement of temperature near the moving porous channel wall while it approaches to a zero in the region close to the boundary layer of the stationary channel wall,. An increment in both chemical reaction and Schmidt number results in decreasing concentration. The velocity of fluid increases as Grashof number and modified Grashof number increases.
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Zigta, B., and P. R. Koya. "The Effect of MHD on Free Convection with Periodic Temperature and Concentration in the Presence of Thermal Radiation and Chemical Reaction." International Journal of Applied Mechanics and Engineering 22, no. 4 (December 20, 2017): 1059–73. http://dx.doi.org/10.1515/ijame-2017-0068.

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Abstract This paper studies the effect of magneto hydrodynamics on unsteady free convection between a pair of infinite vertical Couette plates. The temperature of the plates and concentration between the plates vary with time. Convection between the plates is considered in the presence of thermal radiation and chemical reaction. The solution is obtained using perturbation techniques. These techniques are used to transform nonlinear coupled partial differential equations to a system of ordinary differential equations. The resulting equations are solved analytically. The solution is expressed in terms of power series with some small parameter. The effect of various parameters, viz., velocity, temperature and concentration, has been discussed. Mat lab code simulation study is carried out to support the theoretical results. The result shows that as the thermal radiation parameter R increases, the temperature decreases near the moving porous plate while it approaches to a zero in the region close to the boundary layer of the stationary plate. Moreover, as the modified Grashof number, i.e., based on concentration difference, increases, the velocity of the fluid flow increases hence the concentration decreases. An increase in both the chemical reaction parameter and Schmidt number results in decreased concentration.
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Seddeek, M. A., S. N. Odda, M. Y. Akl, and M. S. Abdelmeguid. "Analytical solution for the effect of radiation on flow of a magneto-micropolar fluid past a continuously moving plate with suction and blowing." Computational Materials Science 45, no. 2 (April 2009): 423–28. http://dx.doi.org/10.1016/j.commatsci.2008.11.001.

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Zaginaylov, Gennadiy I., Yuri V. Gandel, and Petr V. Turbin. "Modeling of plasma effect on the diffraction radiation of relativistic beam moving over a grating of finite extent." Microwave and Optical Technology Letters 16, no. 1 (September 1997): 50–54. http://dx.doi.org/10.1002/(sici)1098-2760(199709)16:1<50::aid-mop16>3.0.co;2-8.

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Shur, Michael S., and Victor Ryzhii. "Plasma Wave Electronics." International Journal of High Speed Electronics and Systems 13, no. 02 (June 2003): 575–600. http://dx.doi.org/10.1142/s0129156403001831.

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Plasma waves are oscillations of electron density in time and space. In deep submicron field effect transistors plasma wave frequencies lie in the terahertz range and can be tuned by applied gate bias. Since the plasma wave frequency is much larger that the inverse electron transit time in the device, it is easier to reach "ballistic" regimes for plasma waves than for electrons moving with drift velocities. In the ballistic regime, no collisions of electrons with impurities or lattice vibrations occur on a time scale on the order of the plasma oscillation period, and the device channel acts as a resonant cavity for the plasma waves, making possible tunable resonant detection or even emission of the electromagnetic radiation in the terahertz range. We review the theory of plasma waves in field effect transistors; discuss instabilities of these waves in different device structures and their applications for detection and generation of the terahertz radiation.
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Golenkov, A. G., A. V. Shevchik-Shekera, M. Yu Kovbasa, I. O. Lysiuk, M. V. Vuichyk, S. V. Korinets, S. G. Bunchuk, S. E. Dukhnin, V. P. Reva, and F. F. Sizov. "THz linear array scanner in application to the real-time imaging and convolutional neural network recognition." Semiconductor Physics, Quantum Electronics and Optoelectronics 24, no. 1 (March 9, 2021): 90–99. http://dx.doi.org/10.15407/spqeo24.01.090.

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Room temperature linear arrays (up to 160 detectors in array) from silicon metal- oxide-semiconductor field-effect transistors (Si-MOSFETs) have been designed for sub- THz (radiation frequency 140 GHz) close to real-time direct detection operation scanner to be used for detection and recognition of hidden objects. For this scanner, the optical system with aspherical lenses has been designed and manufactured. To estimate the quality of optical system and its resolution, the system modulation transfer function was applied. The scanner can perform real-time imaging with the spatial resolution better than 5 mm at the radiation frequency 140 GHz and contrast 0.5 for the moving object speed up to 200 mm/s and the depth of field 20 mm. The average dynamic range of real time imaging system with 160-detector linear array is close to 35 dB, when the sources with the output radiation power of 23 mW (IMPATT diodes) are used (scan speed 200 mm/s). For the system with 32-detector array, the dynamic range was about 48 dB and for the single-detector system with raster scanning 80 dB with lock-in amplifier. However, in the latter case for obtaining the image with the sizes 20×40 mm and step of 1 mm, the average scanning time close to 15 min is needed. Convolutional neural network was exploited for automatic detection and recognition of hidden items.
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Dissertations / Theses on the topic "Radiation effect of moving magnet"

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"Characteristics of far field and energy flow due to a moving radiating source in various media." Chinese University of Hong Kong, 1988. http://library.cuhk.edu.hk/record=b5885955.

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Books on the topic "Radiation effect of moving magnet"

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Compton scattering by static and moving media. [Washington, DC: National Aeronautics and Space Administration, 1997.

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Book chapters on the topic "Radiation effect of moving magnet"

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Munshi, Naseem A. "Effect of Cure on the Radiation Resistance of Superconducting Magnet Resin Systems." In Advances in Cryogenic Engineering Materials, 1083–90. Boston, MA: Springer US, 1994. http://dx.doi.org/10.1007/978-1-4757-9053-5_137.

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Wu, X. L., W. M. Yang, S. H. Zhu, J. Z. Guo, T. N. Lu, and J. L. Pei. "Effect of Magnet Moving Speed on the Relaxation Rate of the Levitation Force for YBCO Bulk." In Materials Science Forum, 2103–6. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-432-4.2103.

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Zhu, S. H., W. M. Yang, X. L. Wu, J. Z. Guo, T. N. Lu, and S. B. Xi. "Effect of the Moving Speed between Magnet and Superconductor on the Levitation Force of Single-Domain YBCO Bulk." In Materials Science Forum, 2107–10. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-432-4.2107.

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Hussain, S. M., H. J. Joshi, and G. S. Seth. "Radiation Effect on MHD Convective Flow of Nanofluids over an Exponentially Accelerated Moving Ramped Temperature Plate." In Lecture Notes in Mechanical Engineering, 31–43. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-5329-0_3.

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Conference papers on the topic "Radiation effect of moving magnet"

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Tsyranov, S. "Operation of multi-gigawatt magnetic compression lines." In 8th International Congress on Energy Fluxes and Radiation Effects. Crossref, 2022. http://dx.doi.org/10.56761/efre2022.s4-o-027404.

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The paper presents the results of theoretical study the mechanism of Magnetic Compression Lines (MCL) operationin the multi-gigawatt power range. It has been found that the MCL regime is realized under the condition when the precession period of the magnetic moment is less than T0, where T0is twice the propagation time of an electromagnetic wave between the inner and outer conductors of the line. The studies have shown that the input pulse amplification in power has its maximum value when an input pulse width is around of 4T0. While moving along the MCL, the input pulse splits in two peaks and then the energy is redistributed in favor of the first peak. This effect is due to the fact that several periods of precession are located within the first and second peaks, and their number and frequency change during the movement.
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Mousavizadegan, S. H., and M. Rahman. "The effect of radiation velocity potentials on the drift force on a submerged sphere." In FLUID STRUCTURE INTERACTION/MOVING BOUNDARIES 2007. Southampton, UK: WIT Press, 2007. http://dx.doi.org/10.2495/fsi070021.

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Zhen Shi, Jie Yang, Peng Yue, and Ciyu Ji. "Study on decoying effect of counting ARM by using moving radiation source." In 2008 2nd International Symposium on Systems and Control in Aerospace and Astronautics (ISSCAA). IEEE, 2008. http://dx.doi.org/10.1109/isscaa.2008.4776385.

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Arcire, Alexandru, and George Mihalache. "Position control of a bidirectional moving magnet actuator based on contactless hall-effect transducer." In 2015 9th International Symposium on Advanced Topics in Electrical Engineering (ATEE). IEEE, 2015. http://dx.doi.org/10.1109/atee.2015.7133840.

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Shabrina, Nabila Husna, and Samuel. "Simulating the Effect of Permanent Magnet Synchronous Machine on Dipole Antenna Radiation in Industrial Site." In 2018 IEEE 3rd International Conference on Communication and Information Systems (ICCIS). IEEE, 2018. http://dx.doi.org/10.1109/icomis.2018.8644715.

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Yang, Jianye, Bin Teng, and Ying Gou. "Edge Effect on Numerical Calculation of Nonlinear Radiation Forces for a Submerged Body." In ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/omae2019-95421.

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Abstract To investigate the edge effect on numerical calculation of nonlinear forces for a moving body in the time domain, a large body motion model with linear free surface condition is developed with higher-order boundary element method. Five numerical formulations are used to compute the nonlinear radiation forces on submerged surging bodies with sharp edge and a small chamfer radius at the edge. It is found that for those bodies with smooth surface, the nonlinear radiation forces obtained by all of the numerical formulations are close to each other, but large disperses exist for the body with sharp edge. Examination on the vertical nonlinear radiation forces shows that the method on momentum change rate is insensitive to the small edge radius even the chamfer radius is zero, but the other formulations diverse when the edge radius approaches zero. It is suggested that for a body with sharp edge, the method on momentum change rate should be used, or to replace the body surface by the body with a small radius at its sharp edge.
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Tian, Weixue, and Wilson K. S. Chiu. "Numerical Modeling of CO2 Laser-Heated Moving Glass Rods." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-33082.

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A numerical model is introduced to calculate the temperature field in moving glass rods heated by CO2 laser irradiation at a wavelength of 10.6 μm. The glass is assumed to be opaque to laser irradiation due to its high absorption coefficient at 10.6 μm. The dependence of the absorption coefficient on wavelength and temperature is considered in this model. The diffusion approximation is incorporated to analyze the radiation heat transfer in the glass rod. This approximation is valid when the glass rod is above a critical diameter. The temperature within the glass is solved using the finite volume method. The effect of laser power, laser focus, the moving speed and the radius of glass rod on the temperature distribution are studied. It is found that all these parameters have a significant effect on the temperature distribution in the glass rod. Results of simulation show that, with careful choice of these parameters, a CO2 laser may be used as a heat source for glass rod annealing or coating with stringent temperature constraints.
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Zhou, Zhiwei, and Sean F. Wu. "Prediction of Sound Radiation From Vibrating Structures in Motion: Application to Vehicle Pass-By Noises." In ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-1060.

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Abstract This paper presents an extended Kirchhoff integral formulation for predicting sound radiation from an arbitrarily vibrating structure moving along an infinite baffle. In deriving this integral formulation, the effect of sound reflection from the baffle is taken into account by using the image source theory. Moreover, the effect of source convection motion and that of interaction between motion-induced turbulence and the vibrating surface on the resulting acoustic pressure field are incorporated in the formulation. As an example, this formulation is used to simulate sound radiation from a full-size vehicle driving on an infinite solid ground at various speeds. Sinusoidal forces are assumed to excite the vehicle on its four tires. Vibration responses due to these excitations are calculated using finite element method. Once the normal component of the surface velocity is specified, the radiated acoustic pressure field is obtained numerically using boundary element method. The results show that the effect of source convection motion becomes obvious when the Mach number exceeds 0.1, or equivalently, when a vehicle drives at a speed of 70 mph or higher.
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Saito, Takushi, Isao Satoh, and Tatsuya Kawaguchi. "Local Radiation Heating Technique of Polymeric Materials Using Functional-Dye." In ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference collocated with the ASME 2007 InterPACK Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/ht2007-32909.

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In this study, the authors added a functional dye to a material which was transparent in initial state, to locally change the radiation absorption coefficient of the material. By using this material, we proposed a radiation heating technique that can achieve a selective local heating in three-dimensional system and investigated its feasibility. Temperature change of the test sample was measured in the experiment, and the characteristic of the presenting technique was investigated. To obtain better understanding of the presenting technique, numerical simulation of the temperature distribution inside the sample was also performed. In the experiment, photochromic dye and thermochromic dye were used as functional dyes and they were individually added to thermoplastic polymeric material (polystyrene) by using organic solvent (tetrahydrofuran). Then the material containing the dye was dried and processed to give a certain shape for the experiment. He-Cd laser and Ar ion laser were properly used as the excitation and the heat sources according to the type of dye. Experimental result showed that local heating of the material was achieved only in quite thin surface region in case of photochromic dye. On the other hand, local heating inside the material was successfully achieved in case of thermochromic dye. However, it was also observed that the heating point was moved to the upstream direction of the laser beam. To examine the solution of this problem, effect of the laser irradiation conditions on the moving speed of the heating point was discussed based on the numerical simulation results.
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Datta, N., and J. D. Thekinen. "Wet Vibration of Axially Loaded Elastically Supported Plates to Moving Loads: Aircraft Landing on Floating Airports." In ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/omae2013-10445.

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Dynamic analysis of thin rectangular elastically supported stiffened plates with axial loads is presented. A floating airport is modeled as a horizontal Kirchhoff’s plate, which is elastically supported at the ends; and is subjected to the impact of aircrafts landing and deceleration over its length. This sets the free-free-free-free plate into high-frequency vibration, causing flexural stress waves to travel over the plate. First, the beam natural frequencies and modeshapes in either direction are generated with these complexities. The Eigen value analysis of the governing differential equation is done, using the weighted summation of the product of the beam modes. The accuracy of the frequencies is compared with those from FEA studies. The radiation pressure on the bottom side of the plate is included to reduce the frequencies by the added-mass effect. The plate is then subjected to decelerating shock loads. The vibratory response is analyzed by the computationally efficient normal mode analysis. The amplification factor vs. the taxiing time of the moving load is generated.
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