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Thermal Deformation Analysis and Electron Beam Optics Simulation for a Thermionic Electron Gun Design
摘要： When the thermionic electron gun of the klystron operates, the structure around the cathode is subjected to thermal deformation due to the high operating temperature of the cathode. A thermal deformation analysis of the existing electron gun with 'cold' dimensions (dimension on fabrication) was done using the ANSYS code to get the 'hot' dimensions of the electron gun on operation. After that, the optics of the emitted electron beam were simulated using two codes (EGUN and CST-PS) for the two cases of the 'cold' dimension and the 'hot' dimension. We compared the beam trajectories of the above two cases to investigate the change in the physical quantities, which would have a strong effect on the klystron performance due to the thermal deformation. The thermal deformation was found to cause a perveance change as large as 15%. The scalloping behavior was also investigated with an applied magnetic field for the two cases of cold and hot dimensions.
关键词： EGUN code,CST code,Electron gun,ANSYS code,Klystron,Thermal deformation
更新于2025-09-23 15:23:52
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Performance enhancement of copper indium diselenide photovoltaic module using inorganic phase change material
摘要： The work presents the method to increase the electrical efficiency and power output of photovoltaic (PV) panel with the use of phase change material (PCM). CaCl2.6H2O–Fe3Cl2.6H2O eutectic has a suitable melting point and high latent heat for temperature regulation of PV panel. The work has been focused on the experimental setup and simulation heat extraction from the PV panel with the use of ANSYS software. A modification of copper indium diselenide (CIS) PV module from Solar Frontier (SF170-S) was made with a eutectic mixture (70:30) of calcium chloride hexahydrate (70%) and iron (III) chloride hexahydrate phase change material. The cell temperature of the PV panel with and without PCM was measured and compared for two typical days. The simulation of the PV-PCM systems comprising both PV panels was performed using ANSYS (fluent) software, followed by the comparison of the results actual experimental data. The experimental results show that the maximum temperature difference on the surface of PV panel without PCM was 9°C higher than that on the panel with PCM in a period of 1 day. Referring to experimental results, the calculation of the maximum and average increase of power gain was made for PV-PCM panel. Final results show that the electricity production of PV-PCM panel was higher for 96.55 Whr in a particular day of experimentation.
关键词： phase change material,ANSYS,electrical efficiency,power gain,photovoltaic module
更新于2025-09-23 15:21:01
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[IEEE 2018 19th International Conference on Electronic Packaging Technology (ICEPT) - Shanghai (2018.8.8-2018.8.11)] 2018 19th International Conference on Electronic Packaging Technology (ICEPT) - The mechanical simulation of a special biosensor
摘要： Cantilever-based sensor is kind of the most popular MEMS sensor. In this paper, by taking an example the process of analyzing a transducer is explained, such as building models and performing mathematic operations on result data to get the performance parameters of a cantilever-based sensor. We also state the principle of the cantilever bio-sensor. In the meantime we explain the theory of the operating of cantilever, and a cantilever sensor design guided by mechanical simulation.
关键词： simulation,ANSYS,biosensor,cantilever,MEMS
更新于2025-09-23 15:21:01
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Analysis of Thermal Stress and Temperature Distribution of Laser Power 10.0w and 20.0w on Material Removal in Aluminium Oxide Ceramic
摘要： The momentum look into researches the thermal stress investigation and temperature distribution of laser power 10.0w and 20.0w in aluminum oxide ceramic. Additionally, this paper explores the impact of thermal stress analysis and temperature distribution on material removal prepare. At the point when laser is connected for machining process for making smaller scale groove, temperature distribution assumes an imperative part for that since large amount of heat release by the laser which is influenced the material and deliver a heat affected zone thus material gets melted and vaporize. Thermal Stress is likewise being done because of nearness of thermal impact in material at the time of heat generation and it additionally assumes a decent part to achieve the great material removal handle. Accomplishing a fancied score of particular measurements is conceivable by having control over process parameters of a laser grooving machine which thus represents the measure of material removed. To handle with this, and concentrating on current trend where laser machining is exceptionally Demanded and connected in industry like like bio medical engineering, aerospace, automobile etc., and so on., it is particularly fundamental to concentrate the temperature distribution in the heat affected zone of the material where heat is created (due to heat energy released by laser beam) and equivalent thermal stress in the material body that is in charge of material removal, Achieving a desired groove with great precision. Limited component examination technique utilizing ANSYS is utilized to to simulate and analyze this temperature distribution and equivalent thermal stress of different laser power. In this paper temperature distribution FEM chart with diagrams for 10.0W and 20.0W, Material removal for 10.0W, 20.0W, Equivalent stress FEM diagram with graph for 100W, 200W are appeared furthermore the correlation of laser power in the vicinity of 10.0w and 20.0w are available.
关键词： Temperature Distribution,ANSYS,Laser Power,Material Removal,Thermal Stress
更新于2025-09-12 10:27:22
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Effect of elastomer characteristics on fiber optic force sensing performance in biomedical robotics applications
摘要： Miniaturized and “smart” sensors are required for research in biology, physiology, and biomechanics, and they have extremely important clinical applications for diagnostics and minimally invasive surgery. Fiber optic sensors have been proven to provide advantages compared to conventional sensors and high potential for biomechanical and biomedical applications. They are small, easy to operate, minimally invasive with low risk, more accurate, and inexpensive. This paper reports the design and modeling of a fiber optic force sensor that is capable of measuring compliance for a contact force of up to 1 N. The main objective of this study is to design and model a fiber optic sensor capable of measuring the total force applied on an object. A polydimethylsiloxane (PDMS) elastomer film with a thickness of 1.2 mm is placed between an optical fiber tip and an object, and it is used for measuring the force applied on a rigid element. The compliance of the fiber optic force sensor is measured by recording the response of PDMS elastomer films under different load conditions. We use finite element modeling results as a basis for comparing experimental data. The agreement between theoretical predictions and experimental data is reasonable and within an acceptable range.
关键词： Force sensor,FEM analysis,Optical fiber,Elastomer,MATLAB analysis,LabVIEW,ANSYS simulation,Biomedical robotics
更新于2025-09-04 15:30:14