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Journal articles on the topic 'Structural analysis of an engine'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 February 2022

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1

Zhang, Hong Xin, Yu Qin Jiao, Tie Zhu Zhang, and Lian Jun Cheng. "Structural Principle of Hydraulic Engine." Applied Mechanics and Materials 709 (December 2014): 28–31. http://dx.doi.org/10.4028/www.scientific.net/amm.709.28.

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Hydraulic engines can be widely used in many fields, such as agricultural machinery, construction machinery, duty vehicle, and many other fixing or mobile devices. The development analysis and study on their structural principle, technical and operational characteristics will be undoubtedly very useful for putting forward new type hydraulic engines. The structural principle of Hydraulic Free Piston Engine, Hydraulic Confined Piston Engine was introduced. The structural principle of Half Crank Hydraulic Engine (HCHE), which inherits the merits of traditional engine, HFPE and HCPE, was put forward.

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2

Ji, Yan Ping, Ping Sun, and Si Bo Zhao. "Analysis of Temperature Field of High Speed Diesel Engine Parts and their Structural Optimization." Applied Mechanics and Materials 490-491 (January 2014): 1003–7. http://dx.doi.org/10.4028/www.scientific.net/amm.490-491.1003.

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The analysis of structure and performance of internal combustion engine is presented in this paper from the following two aspects: the thermal load of I. C. Engine and the thermal efficiency of diesel engines. Firstly, the thermal load of key parts of I. C. Engine as well as the evaluation parameters of which are introduced briefly. Furthermore, based on the factors influencing the heat transfer process of internal combustion engine, the current research situation of internal combustion engine work process and heat balance for combustion chamber components, and the whole engine using numerical simulation method is described, while the coupled study of internal combustion engine components is developing trends of internal combustion engine heat balance study in the future.

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3

Han, Moon-Sik, and Jae-Ung Cho. "Structural Analysis of Engine Mounting Bracket." Journal of manufacturing engineering & technology 21, no. 4 (August 15, 2012): 525–31. http://dx.doi.org/10.7735/ksmte.2012.21.4.525.

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4

Dave Marmik M, Dave Marmik M., and Kothari Kartik D. "Static Structure Analysis of Diesel Engine Camshaft." International Journal of Scientific Research 2, no. 5 (June 1, 2012): 208–9. http://dx.doi.org/10.15373/22778179/may2013/69.

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5

Cheng, Yuqiang, and Jianjun Wu. "Particle swarm algorithm-based damage-mitigating control law analysis and synthesis for liquid-propellant rocket engine." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 233, no. 10 (October 31, 2018): 3810–18. http://dx.doi.org/10.1177/0954410018806080.

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The damage-mitigating control is a novel technique to ameliorate the reliability and safety of liquid-propellant rocket engines by achieving an optimized trade-off level between overall dynamic performance of the liquid-propellant rocket engine and structural durability of some selected critical damageable components under the condition of no impact on the achievement of the launch and flight mission. Thus, it is needed to be solved for the damage-mitigating control that the global optimization of the best trade-off between the damage of the critical damageable components and the performance of rocket engine. The major challenge should focus on: (i) to construct model of a certain rocket engine system dynamics, critical components structural dynamics, and damage dynamics; (ii) to optimize open loop feed-forward control law based on liquid-propellant rocket engine system dynamic model, structural and damage dynamics model, by using particle swarm optimization algorithm; (iii) to synthesize an intelligent damage-mitigating control system using the optimized open loop control law. In this paper, synthesis procedure of damage mitigation is introduced; structure and damage dynamic model of damageable components are formulated. The results of the simulation computation show that the synthesized control laws are implemented and achieve the effect of damage mitigating for the liquid-propellant rocket engine. It can provide important theoretical and practical value not only for improving the safety and reliability of the liquid-propellant rocket engine, but also for the complex thermo-flow-mechanical systems such as airplane engines, automobile engines, and fossil-fueled power plant because their service life is very critical too.

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6

McKnight, R. L. "Structural Analysis Applications." Journal of Engineering for Gas Turbines and Power 111, no. 2 (April 1, 1989): 271–78. http://dx.doi.org/10.1115/1.3240248.

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The programs in the structural analysis area of the HOST program emphasized the generation of computer codes for performing three-dimensional inelastic analysis with more accuracy and less manpower. This paper presents the application of that technology to Aircraft Gas Turbine Engine (AGTE) components: combustors, turbine blades, and vanes. Previous limitations will be reviewed and the breakthrough technology highlighted. The synergism and spillover of the program will be demonstrated by reviewing applications to thermal barrier coatings analysis and the SSME HPFTP turbine blade. These applications show that this technology has increased the ability of the AGTE designer to be more innovative, productive, and accurate.

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7

Lalvani, J. Isaac Joshua Ramesh, E. Prakash, M. Parthasarathy, S. Jayaraj, and K. Annamalai. "Structural Analysis on Swirling Grooved SCC Piston." Advanced Materials Research 984-985 (July 2014): 452–55. http://dx.doi.org/10.4028/www.scientific.net/amr.984-985.452.

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This journal describes a study on the structural effects of DI diesel engine conventional piston and modified pistons. To enhance the combustion efficiency of the engine conventional piston has been modified as shallow depth piston bowl with swirling grooves on the piston crown. Three different widths (5.5mm, 6.5mm and 7.5mm) and constant depth (00 to 50) swirling grooves added on the shallow depth combustion chambered piston crown. The conventional piston and modified pistons has been modeled in CATIA software and structural analysis done in ANSYS 14. In structural analysis observed that deformation for the modified pistons are same and negligible as compared to the conventional piston.

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8

Du, Xian Feng, Zhi Jun Li, Feng Rong Bi, Jun Hong Zhang, Xia Wang, and Kang Shao. "Structural Topography Optimization of Engine Block to Minimize Vibration Based on Sensitivity Analysis." Advanced Materials Research 291-294 (July 2011): 318–26. http://dx.doi.org/10.4028/www.scientific.net/amr.291-294.318.

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This paper describes the structural optimization technique with FEM topography optimization technology, the design shape of engine components have been optimized based on the sensitivity analysis, and the purpose is to minimize the vibration of engine block. The process of structural optimization display that the vibration on FEM models of engine block as boundary conditions for subsequent topography optimization were used to be an output from dynamic response analysis, and the loads exerted on the FEM models are acquired from the multibody dynamics system, and topography optimization is performed to detect the effective design parameters of engine block shape to structural strength, to reduce the vibration velocity intensity. This paper presents today’s computer design capabilities in the simulation of the dynamic and vibration behaviour of engine and focuses on the relative merits of modification and full-scale structural optimization of engine, together with the creation of new low-vibration designs. The results verify the analysis, assessment and vibration optimization of the engine.

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9

Avdeev, S. V. "Mathematical model of turbofan engine weight estimation taking into account the engine configuration and size." VESTNIK of Samara University. Aerospace and Mechanical Engineering 20, no. 1 (April 20, 2021): 5–13. http://dx.doi.org/10.18287/2541-7533-2021-20-1-5-13.

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The paper presents a new correlation-regression model of estimating the turbofan engine weight considering the effect of the engines design schemes and dimensions. The purpose of this study was to improve the efficiency of the conceptual design process for aircraft gas turbine engines. Information on 183 modern turbofan engines was gathered using the available sources: publications, official websites, reference books etc. The statistic information included the values of the total engine air flow, the total turbine inlet gas temperature, the overall pressure ratio and the bypass ratio, as well as information on the structural layout of each engine. The engines and the related statistics were classified according to their structural layout and size. Size classification was based on the value of the compressor outlet air flow through the gas generator given by the parameters behind the compressor. Depending on the value of this criterion, the engines were divided into three groups: small-sized, medium-sized gas turbine engines, and large gas turbine engines. In terms of the structural layout, all engines were divided into three groups: turbofan engines without a mixing chamber, engines with a mixing chamber and afterburning turbofan engines. Statistical factors of the improved weight model were found for the respective groups of engines, considering their design and size. The coefficients of the developed model were determined by minimizing the standard deviations. Regression analysis was carried out to assess the quality of the developed model. The relative average error of approximation of the developed model was 8%, the correlation coefficient was 0,99, and the standard deviation was 10,2%. The model was found to be relevant and reliable according to Fisher's test. The obtained model can be used to assess the engine weight at the stage of conceptual design and for its optimization as part of an aircraft.

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10

Xie, Qiang, Cun Yun Pan, Hu Chen, Zheng Zhou Zhang, and Lei Zhang. "Structural Modal Analysis of a New Twin-Rotor Piston Engine." Applied Mechanics and Materials 390 (August 2013): 256–60. http://dx.doi.org/10.4028/www.scientific.net/amm.390.256.

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With the finite analysis software ANSYS, the key parts and the whole structure of a new twin-rotor piston engine is analyzed, and then the structural modal parameters are obtained by using finite element method in the cases of free modality. Furthermore, the natural vibration characteristics of the twin-rotor piston engine are analyzed, as well as the influence of structural parameters on vibration transfer and radiation noise. The research is expected to lay a foundation for the vibration reduction design of the twin-rotor piston engine.

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11

Balamurugan, B., M. N. A. Md Roshan, B. Shaahul Hameed, K. Sumathi, R. Senthilkumar, A. Udayakumar, K. H. Venkatesh Babu, et al. "PSAP: protein structure analysis package." Journal of Applied Crystallography 40, no. 4 (July 13, 2007): 773–77. http://dx.doi.org/10.1107/s0021889807021875.

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A computing engine, theProtein Structure Analysis Package(PSAP), has been developed to calculate and display various hidden structural and functional features of three-dimensional protein structures. The proposed computing engine has several utilities to enable structural biologists to analyze three-dimensional protein molecules and provides an easy-to-use Web interface to compute and visualize the necessary features dynamically on the client machine. Users need to provide the Protein Data Bank (PDB) identification code or upload three-dimensional atomic coordinates from the client machine. For visualization, the free molecular graphics programsRasMolandJmolare deployed in the computing engine. Furthermore, the computing engine is interfaced with an up-to-date local copy of the PDB. The atomic coordinates are updated every week and hence users can access all the structures available in the PDB. The computing engine is free and is accessible online at http://iris.physics.iisc.ernet.in/psap/.

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12

Dave, Marmik M., and Manish P. Vekariya. "Static Structure Analysis of Diesel Truck Engine Connecting Rod." International Journal of Scientific Research 2, no. 6 (June 1, 2012): 197–98. http://dx.doi.org/10.15373/22778179/june2013/62.

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13

Chaudhari, Neha. "Design and Analysis of an Open Differential." International Journal for Research in Applied Science and Engineering Technology 9, no. VI (June 30, 2021): 5255–63. http://dx.doi.org/10.22214/ijraset.2021.36181.

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A transmission or gearbox provides speed and torque conversions from a rotating power source to another device using gear ratios. The most common use is in motor vehicles, where the transmission adapts the output of the internal combustion engine to the drive wheels. Such engines need to operate at a relatively high rotational speed, which is inappropriate for starting, stopping, and slower travel. The transmission reduces the higher engine speed to the slower wheel speed, increasing torque in the process. We have designed a differential gearbox and tried to create the frictional contact between two mating gears. And we have performed the structural analysis on gear box by providing the torque to the assembly of crown gear and pinion gear, assembly of inner gears- spider gears and side gears and crown gear with the cage to attach spider gears. We have selected two kinds of alloy steel and have compared the factor of safety and structural analysis of the both.

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14

Yang, Chulho. "A Review on the Structural Analysis of Engine Assembly." Transaction of the Korean Society of Automotive Engineers 28, no. 1 (January 1, 2020): 87–92. http://dx.doi.org/10.7467/ksae.2020.28.1.087.

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15

Guillaume, Michel, Elias Schläpfer, and Marcel Schmid. "Structural Analysis of Ageing Pilatus P-3 Engine Mount." Procedia Engineering 114 (2015): 583–89. http://dx.doi.org/10.1016/j.proeng.2015.08.108.

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16

Nageswararao, Dayadi, and Gobbur Mukesh. "Thermo Structural Analysis of Two Stroke Si Engine Cylinder." IOSR Journal of Mechanical and Civil Engineering 16, no. 053 (December 2016): 72–80. http://dx.doi.org/10.9790/1684-16053047280.

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17

Čerňan, Jozef, Karol Semrád, Katarína Draganová, and Miroslava Cúttová. "Fatigue stress analysis of the DV-2 engine turbine disk." Aircraft Engineering and Aerospace Technology 91, no. 4 (April 1, 2019): 708–16. http://dx.doi.org/10.1108/aeat-03-2018-0096.

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Purpose The purpose of this study is to improve life prediction of certain components. Fatigue of the high-stressed structural elements is an essential parameter that affects the lifetime of such components. In particular, aviation engines are devices whose failure due to fatigue failure of one of the important components can lead to fatal consequences. Design/methodology/approach In this study, two analyses in the turbine disk of the jet engine during the simulated operating load were performed: The first one was the analysis of the heat-induced stresses using the finite element method. The goal of the second analysis was to determine the residual fatigue strength of a loaded disk by the software tool using the Palmgren - Miner Linear Damage Theory. Findings The results showed a high degree of similarity with the real tests performed on the aircraft engine and revealed the weak points in the design of the jet engine. Research limitations/implications It should be mentioned that without appropriate experiments, results of this analysis could not be verified. Practical implications These results are helpful in the re-designing of the jet engines to increase their technical feasibility. Originality/value Such analysis has been realized in the DV-2 jet engine research and development program for the first time in the history of jet engine manufacturing process in Slovakia and countries of Eastern Europe region.

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18

Liang, Jinhui, Dongdong Zhang, and Shuwen Wang. "Vibration characteristic analysis of single-cylinder two-stroke engine and mounting system optimization design." Science Progress 103, no. 3 (July 2020): 003685042093063. http://dx.doi.org/10.1177/0036850420930631.

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Compared with four-stroke engines, single-cylinder two-stroke engines have the characteristics of small inertia, high rotational speed, and wide excitation frequency range. However, the structural vibration and noise generated by the two-stroke engine are very violent. Hence, it is necessary to reduce the vibration and noise of the single-cylinder two-stroke engine. Based on the design theory of the engine mounting system, the excitation frequency, direction, and magnitude of a single-cylinder two-stroke engine are analyzed. The rubber isolator is selected as the new mount element, and the dynamic model of the engine powertrain mounting system is established based on ADAMS software. Based on the sensitivity analysis of the design variables of the mounting system, the natural frequency of the mounting system is used as an objective, and the three-directional stiffness of the mounting system is taken as design variables for the optimization problem. The optimization model is solved by the sequential quadratic programming method. The results show that the maximum frequency of the mounting system after optimization is less than 1/[Formula: see text] of the excitation frequency, and the isolation effect is achieved. The dynamic model and the optimization method presented in this article would provide a useful tool for the design and optimization of mounting system for the single-cylinder two-stroke engine to reduce vibration from the engine to the engine support.

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19

Du, Yun Peng, Guo Liang Hu, and Fei Dong. "Study on Structural Design and Optimization Analysis for 2V80 Engine Piston Based on Finite Element Analysis." Advanced Materials Research 753-755 (August 2013): 1188–91. http://dx.doi.org/10.4028/www.scientific.net/amr.753-755.1188.

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According to the experiment of engine bench test and piston's temperature field, the thermal boundary conditions and the mechanical conditions of piston are obtained. Under the condition of mechanical load and thermal load playing, the stress and strain of original engine is simulated and analyzed. Stress concentration and weak structure of original engine is found. The parameter of piston structure is optimized and the optimizations are put forward and analyzed to verify the optimizations' effectiveness. These provide a reference for the digital modeling and numerical analysis to solver engineering problems.

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20

LEE, YOUNG-SHIN, JEONG-PYO KONG, JAE-OK LEE, HYUN-SEUNG LEE, JAE-HOON KIM, JOON-TAK JUN, and CHUL-GOO KIM. "A STUDY ON THE FATIGUE ANALYSIS OF HEAVY DUTY DIESEL ENGINE." Modern Physics Letters B 22, no. 11 (May 10, 2008): 929–34. http://dx.doi.org/10.1142/s0217984908015620.

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The heavy duty diesel engine must have a large output for maintaining excellent mobility. The compacted graphite iron (CGI) is a material currently under study for the engine demanded for high torque, durability and stiffness. In this study, structural analysis of heavy duty engine was carried out with ABAQUS, and the fatigue analysis was executed with FEMFAT using the result of structural analysis. We considered about three loading condition; pre-fit load, assembly load, gas load. Safety factors were investigated by assuming the engine was operated until 2 · 106 cycles with cyclic gas loading condition.

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LEE, HYUN-SEUNG, YOUNG-SHIN LEE, JAE-HOON KIM, JOON-TAK JUN, JAE-OK LEE, and CHUL-GOO KIM. "A STRUCTURAL ANALYSIS AND TOPOLOGY OPTIMIZATION ON CYLINDER BLOCK OF HEAVY DUTY DIESEL ENGIN." International Journal of Modern Physics B 24, no. 15n16 (June 30, 2010): 2676–81. http://dx.doi.org/10.1142/s0217979210065453.

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The heavy duty diesel engine must have a large output for maintaining excellent mobility. In this study, a three-dimensional finite element model of a heavy-duty diesel engine was developed to conduct the stress analysis by using property of CGI. The compacted graphite iron (CGI) is a material currently under study for the engine demanded for high torque, durability, stiffness, and fatigue. The FE model of the heavy duty diesel engine section consisting of four half cylinders was selected. The heavy duty diesel engine section includes a cylinder block, a cylinder head, a gasket, a liner, a bearing cap, bearing and bolts. The loading conditions of engine are pre-fit load, assembly load, and gas load. A structural analysis on the result was performed in order to optimize on the cylinder block of the diesel engine.

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22

Luo, Gang, Chi Ma, Wei Chen, Lulu Liu, and Zhenhua Zhao. "Transient Analysis and Safety Assessment of Turbofan Engine Structures during Bird Ingestion." International Journal of Aerospace Engineering 2020 (July 17, 2020): 1–17. http://dx.doi.org/10.1155/2020/7404587.

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The high bypass ratio turbofan engine’s load-carrying structure transient response during bird ingestion was analyzed in accordance with the engine bird ingestion certification regulations, the principles of structural safety assessment were represented, and the structural safety analysis and assessment method of Turbo-Fan engine during bird ingestion were proposed. A high bypass ratio turbofan engine’s FEM was established and verified the rationality when its’ operation. Large bird ingestion into an engine’s procedure was conducted, the dynamic responses of key components on engine’s load-carrying structures during the bird ingestion were discussed, and the safety assessment consequence was obtained. We draw a conclusion that the relevant analysis/simulation data could be submitted to engine certification administration as key documents, the structural safety analysis and assessment method of turbofan engine due to bird ingestion could be applied as analysis and prediction work in the engine bird ingestion certification.

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23

Li, Ming Hai, En Zhe Hong, and Yu Guang Zhang. "The Modal Analysis of 16V240 Diesel Engine." Advanced Materials Research 645 (January 2013): 454–58. http://dx.doi.org/10.4028/www.scientific.net/amr.645.454.

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In order to understand the dynamic characteristics of 16V240 type diesel, established its solid model and finite element model. And conduct the modal analysis of 16V240 diesel with Lanczos method to get the natural frequencies and vibration mode. And then, find the weak points of 16V240 diesel for its structural redesign and improving.

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24

Ovchinnikov, V. V., and Yu V. Petrov. "Study of running engines inertial and gyroscopic properties influence on the dynamic system engine – pylon – wing structural capabilities." Civil Aviation High Technologies 23, no. 3 (July 3, 2020): 63–72. http://dx.doi.org/10.26467/2079-0619-2020-23-3-63-72.

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A modern large-sized aircraft dynamic properties analysis, determined by the specificity of its layout scheme, demonstrates that the engines on under the wing elastic pylons lightly damped oscillations cause a number of undesirable phenomena, including intense accumulation of fatigue damage of the pylon-to-the-wing attachment, in fact in the area of engine installation in the pylon and the wing. The results of theoretical and experimental research show that with some engine attachment to the pylon structural modification it becomes possible to use the engines inertial and gyroscopic properties to absorb these oscillations. In this case, the motor tones damping coefficients increase by an order of magnitude or even more, so the gyroscopic coupling of elastic vibration tones is realized. With the rational choice of the additional parameters of elastic and dissipative bonds in the engine attachments it is possible to affect the aircraft wing and engines aero elastic vibrations effectively, which has a significant effect on the aircraft elements structural capabilities. A mathematical model of aero elasticity (MMAE) with respect to the kinetic moment of the engine rotors and specially designed units for attaching the engines to the pylons was developed in order to study the influence and the selection of rational elastic-dissipative parameters of the pylons-under-the-wing aircraft engine mounts. The method of predetermined basic forms is used for the aircraft with running engines on the pylons MMAE synthesis. The given forms are considered as the aircraft basic structure forms natural vibrations in the void. This work treats the engine nacelle and the rotor as absolutely rigid bodies, the elasticity of the rotor to the nacelle attachment is neglected. The pylon is modeled by an elastic beam, and the elastic and dissipative properties of the pylon-to-the-wing and the engine-to-the-pylon attachments are correspondingly by elastic-dissipative bonds. Schematic diagrams of the engine to the pylon attachments are proposed. The results of the study devoted to the influence of the proposed attachment points modifications on the load and integral strength characteristics of the main structural elements of the engine – pylon – wing dynamic system on the example of an An-124 aircraft are presented. The practical implementation of the proposed solutions aimed to reduce the level of fatigue damage to structural elements of the aircraft feasibility is proved.

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Wang, Yan Xia, and Hui Gao. "Fatigue Strength& Analysis of Diesel Engine Piston on Finite Element Analysis." Advanced Materials Research 156-157 (October 2010): 1086–89. http://dx.doi.org/10.4028/www.scientific.net/amr.156-157.1086.

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In this work, the variational trend of the stresses for the diesel engine piston under the operation conditions is analyzed by using finite element method (FEM) and the fatigue strength of the diesel engine piston is evaluated. The muhiaxial stress was converted into the uniaxial stress with the maximum principal stress method, and the material curve is amended by Goodman’s amendment. Finally the fatigue life and the fatigue safety factor of the diesel engine piston is obtained, which provides a better reference for structural improvements and optimization for the design of the piston.

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Gill, Kanwar J. S., Haeng Muk Cho, Hee Chang Lim, Bhupendra Singh Chauhan, and Dae Ho Park. "Static structural analysis of crankshaft for single cylinder camless engine." Journal of Energy Engineering 23, no. 3 (September 30, 2014): 231–34. http://dx.doi.org/10.5855/energy.2014.23.3.231.

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27

Li, Yan, Qi Gong, and Duo Su. "Comprehensive Analysis of Structural Safety and Durability for Aero-Engine." Procedia Engineering 80 (2014): 76–84. http://dx.doi.org/10.1016/j.proeng.2014.09.062.

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Boyce, L. "Probabilistic structural analysis methods for improving Space Shuttle engine reliability." Journal of Propulsion and Power 5, no. 4 (July 1989): 426–30. http://dx.doi.org/10.2514/3.23172.

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Li, Zhixiang, and Xiaoyan Li. "Structural Design and CFD Analysis of Engine Plastic Intake Manifold." Journal of Physics: Conference Series 1605 (August 2020): 012084. http://dx.doi.org/10.1088/1742-6596/1605/1/012084.

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30

Dhummansure, Vishalkumar, Pravin Subhash Salunkhe, Saleemsab Doddamani, and NI Jamadar. "Structural Analysis and Optimization of EGR Cooler for Diesel Engine." Journal of Failure Analysis and Prevention 21, no. 4 (June 27, 2021): 1387–95. http://dx.doi.org/10.1007/s11668-021-01191-x.

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Xia, Chang Gao, and Zhen Yu Zhang. "Simulation Analysis on Engine Radiated Noise." Advanced Materials Research 421 (December 2011): 354–59. http://dx.doi.org/10.4028/www.scientific.net/amr.421.354.

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In this paper, in order to analyze and predict surface radiated noise, an engine with 6 cylinders is studied by advanced methods. The loads that the engine block is subjected and the modal participation factors can be obtained through multi-body dynamics calculation; by the finite element method, structural modes of the engine can be gotten; by the acoustic boundary element method and the modal acoustic transfer vector method, the acoustic responses on field points can be obtained. According to the simulation results, the acoustic power and the acoustic pressure distributions on field points and noise frequency characteristic can be identified when the engine is operating at different speeds, and the main noise source can be located. These results provide a reference for noise reduction and amelioration of the engine.

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Tandon, Adhir. "Design, Optimization and Analysis of a 4-stroke Diesel Engine Piston and Piston rings using Different Materials." SAMRIDDHI : A Journal of Physical Sciences, Engineering and Technology 10, no. 01 (July 25, 2018): 71–80. http://dx.doi.org/10.18090/samriddhi.v10i01.10.

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Modern Automobiles expect a high performance from its engines, which in turn places its requirements on the piston and cylinder components. Hence the piston has to deal with harsher, and tougher thermal and mechanical conditions. It has to undergo higher operating temperatures and pressures as well as higher speeds and at the same time keeping a check on the emissions. Pistons play a key role in increasing engine efficiency by reducing weight and frictional losses. This has made it essential to devise and search unique and creative concepts and materials for Pistons repeatedly, which offers what the engine demands. In this work Aluminium Alloy-4032 has been selected as the piston material of a 4-Stroke Diesel Engine and the piston rings are made of grey cast iron and alloy steel. Piston is designed by analytical methods taking both thermal and structural effects into consideration, then modelled on CATIA V5 and the analysis of structural deformation due to thermal stresses has been done using Finite Element Analysis of Steady State Thermal and its effect on static structure using Analysis software ANSYS

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Jovanović, Milan T., Vesna Maksimović, and Ivana Cvijović-Alagić. "Failure analysis of jet engine turbine blade." Metallurgical and Materials Engineering 22, no. 1 (March 31, 2016): 31–38. http://dx.doi.org/10.30544/138.

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Jet engine turbine blade cast by investment precision casting of Ni-base superalloy, which failed during exploatation, was the subject of investigation. Failure analysis was executed applying optical microscopy (OM), transmission electron microscopy (TEM) using replica technique, scaning electron microscopy (SEM) and stress rupture life tests. On the ground of obtained results it was concluded that the failure occurred as a result of structural changes caused by turbine blade overheating above the exploitation temperature.

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Czachor, Robert P. "Unique Challenges for Bolted Joint Design in High-Bypass Turbofan Engines." Journal of Engineering for Gas Turbines and Power 127, no. 2 (April 1, 2005): 240–48. http://dx.doi.org/10.1115/1.1806453.

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Bolted joints are used at numerous locations in the rotors and carcass structure of modern aircraft turbine engines. This application makes the design criteria and process substantially different from that used for other types of machinery. Specifically, in addition to providing engine alignment and high-pressure gas sealing, aircraft engine structural joints can operate at high temperatures and may be required to survive very large applied loads which can result from structural failures within the engine, such as the loss of a fan blade. As engine bypass ratios have increased in order to improve specific fuel consumption, these so-called “Ultimate” loads increasingly dominate the design of bolted joints in aircraft engines. This paper deals with the sizing and design of both bolts and lever flanges to meet these demanding requirements. Novel empirical methods, derived from both component test results and correlated analysis have been developed to perform strength evaluation of both flanges and bolts. Discussion of analytical techniques in use includes application of the LS-DYNA™ code for modeling of high-speed blade impact events as related to bolted joint behavior.

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Faruoli, Maria, Annarita Viggiano, Paolo Caso, and Vinicio Magi. "A Numerical Analysis of the Air-Cooling System of a Spark Ignition Aeronautical Engine." E3S Web of Conferences 197 (2020): 06003. http://dx.doi.org/10.1051/e3sconf/202019706003.

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It is well known that spark ignition internal combustion engines for aeronautical applications operate within a specific temperature range to avoid structural damages, detonations and loss of efficiency of the combustion process. An accurate assessment of the cooling system performance is a crucial aspect in order to guarantee broad operating conditions of the engine. In this framework, the use of a Conjugate Heat Transfer method is a proper choice, since it allows to estimate both the heat fluxes between the engine walls and the cooling air and the temperature distribution along the outer wall surfaces of the engine, and to perform parametric analyses by varying the engine operating conditions. In this work, the air-cooling system of a 4-cylinder spark ignition engine, designed by CMD Engine Company for aeronautical applications, is analysed in order to evaluate the amount of the air mass flow rate to guarantee the heat transfer under full load operating conditions. A preliminary validation of the model is performed by comparing the results with available experimental data. A parametric study is also performed to assess the influence of the controlling parameters on the cooling system efficiency. This study is carried out by varying the inlet air mass flow rate from 1.0 kg/s to 1.5 kg/s and the temperature of the inner wall surfaces of the engine combustion chambers from 390 K to 430 K.

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Yu, Z., and Ting W. Lee. "Kinematic Structural and Functional Analysis of Wobble-Plate Engines." Journal of Mechanisms, Transmissions, and Automation in Design 108, no. 2 (June 1, 1986): 226–36. http://dx.doi.org/10.1115/1.3260807.

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This paper concerns the development of a procedure for systematic searching for mechanisms, classifying them, and screening for the optimum mechanism structure for wobble-plate engines. It includes two parts. The first part is on kinematic structural analysis, including the development of a procedure for the structure classification of 150 mechanisms obtained as a result of an exhaustive search from the prior arts, as disclosed in nearly 1000 patents between 1874 and 1982, and other publications. The second part is on functional analysis, which screens for an optimum design based on a set of judgment criteria. Such optimization criteria are developed in this paper and applied to a group of representative mechanisms derived from the structure analysis. Recommendations such as design guidelines are presented. The general nature of the approach—following the method of separation of kinematic structure and function [1] and combining mathematical approach and design heuristics—is demonstrated here in the case of wobble-plate engine mechanisms and is believed to be useful in type synthesis and design of mechanisms of realistic complexity.

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Liu, Bo, and Hui Lue Jiang. "Finite Element Modal Analysis of S385 Diesel Engine Block." Applied Mechanics and Materials 490-491 (January 2014): 504–9. http://dx.doi.org/10.4028/www.scientific.net/amm.490-491.504.

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Free and constraint modal finite element analysis were conducted on S385 diesel engine block using FEA according to its structural characteristics. The natural frequencies and corresponding vibration modes of the first fifteen steps of each condition of the block were worked out using Lanczos method. By the analysis of vibration modes, the weak spots of the block were found and corresponding improved schemes were brought forward. The analysis results supplied a theoretical support to improve the structural design and the dynamic response analysis of the block.

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Wang, Yong. "Study on Structural Analysis for One-Cylinder Vertical Engine Assembly by FEA Method." Applied Mechanics and Materials 496-500 (January 2014): 597–600. http://dx.doi.org/10.4028/www.scientific.net/amm.496-500.597.

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In this paper, a simulation driven design approach was employed for the design process of the structural components of the one-cylinder vertical Engine. Finite element analysis (FEA) of the one-cylinder vertical engine assembly has been completed for assembly and maximum pressure loads using FEA software.

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Lei, Lin, Ming-ze Ding, Hong-wei Hu, Yun-xiao Gao, Hai-lin Xiong, and Wei Wang. "Structural Strength and Reliability Analysis of Important Parts of Marine Diesel Engine Turbocharger." Mathematical Problems in Engineering 2021 (April 19, 2021): 1–20. http://dx.doi.org/10.1155/2021/5547762.

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Supercharging is the main method to improve the output power of marine diesel engines. Nowadays, most marine diesel engines use turbocharging technology, which increases the air pressure and density into the cylinder and the amount of fuel injected correspondingly so as to achieve the purpose of improving the power. In a marine diesel engine, the turbocharger has become an indispensable part. The performance of turbochargers in a harsh working environment of high temperature and high pressure for a long time will directly affect the performance of diesel engine. Based on the market feedback data from manufacturers, the failure modes of compressor impeller, turbine blade, and turbine disk of marine diesel turbocharger are analyzed, and the statistical model of random factors is established. Using DOE design, the structural strength simulation data of 46 compressors and 62 turbines are obtained, and the response surface model is constructed. On this basis, Monte Carlo sampling is carried out to analyze the reliability of the compressor and turbine. The reliability of the compressor is good, while that of the turbine disk is 0.943 and that of the turbine blade is 0.96, which still has the potential of reliability optimization space. Therefore, a multiobjective optimization method based on the NSGA-II genetic algorithm is proposed to obtain the multiobjective optimization scheme data with the reliability and processing cost of turbine disk and blade as the objective function. After optimization, the reliability of turbine disk and blade is 1, the stress value of turbine blade is optimized by 4.7941%, the stress value of turbine disk is optimized by 3.0136%, the machining cost of the turbine blade is reduced by 15.5087%, and the machining cost of turbine disk is reduced by 3.9907%. At the same time, it is verified by simulation, the data based on NSGA-II multiobjective genetic algorithm are more accurate and have practical engineering reference value. The optimized data based on NSGA-II multiobjective genetic algorithm are used to manufacture new turbine samples, and the accelerated test of simulation samples is carried out. The cycle life of the optimized turbine can reach 101,697 cycles and 118,687 cycles, which is 51.75% and 77.11% longer than that of the unoptimized turbine. It can be seen that the optimized turbine can meet the requirements of the reliability index while reducing the manufacturing cost.

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Yuan, Guang Jie, Jie Sun, and Jun Luo. "Finite Element Analysis of Marine Diesel Engine Frame." Advanced Materials Research 421 (December 2011): 320–24. http://dx.doi.org/10.4028/www.scientific.net/amr.421.320.

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Taking the marine low-speed high power diesel engine frame for example, created a three-dimension model through UG. By using the finite element software ANSYS investigated the body’s stress status and displacement which provides a valuable reference for the structural optimization of the cylinder block of diesel engine’s design.

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Chayangkura, C., R. Latorre, and D. Charnews. "Experimental Study of Diesel Engine Cycle-to-Cycle Variation—Part I: Analysis of Cycle-to-Cycle Cylinder Pressure Variation." Journal of Ship Research 33, no. 03 (September 1, 1989): 252–59. http://dx.doi.org/10.5957/jsr.1989.33.3.252.

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With the increased use of marine diesel engines, engine-induced vibration has become an important problem. The vibration is caused by engine output variation, which has not been fully documented. In this paper the results of an analysis of the cycle-to-cycle variation in the cylinder pressure of a single-cylinder diesel test engine are presented. Data covering tests with different compression ratio settings and speeds are analyzed in terms of (a) cycle-to-cycle variation in maximum cylinder pressure Pmax and (b) cycle-to-cycle variation in the combustion work, denoted PI. Special tests are made to validate the data acquisition and data reduction system. The validation shows that the cylinder pressure measurements from the test engine run as a spark-ignition engine are in good agreement with published results. Analysis of the diesel engine test measurements show that the coefficient of variation in the diesel engine cylinder pressure is smaller than the spark-ignition engine value. These results also show there is relatively little correlation between the cycle-to-cycle coefficient for variation of the maximum pressure and the corresponding variation in the combustion work, PI.

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Venczel, Márk, and Árpád Veress. "Introduction to Design and Analysis of Torsional Vibration Dampers in Vehicle Industry." International Journal of Engineering and Management Sciences 4, no. 1 (March 3, 2019): 310–24. http://dx.doi.org/10.21791/ijems.2019.1.39.

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The crankshaft of today’s internal combustion engines with high performance output are exposed to harmful torsional oscillations originated from the unbalanced gas and inertial forces. To avoid the fatigue damage of engine components, caused by the undesired vibrations, torsional vibration dampers can be applied. Viscodampers are one type of the torsional vibration dampers, which operational fluid is silicone oil. For cost-effective R&D activities and production, finite element and finite volume numerical discretization methods based calculation techniques must be involved into the engineering work supported by the modern computer technology. The aim of this paper is to provide an insight into the multidisciplinary design and development process of visco-dampers in vehicle industry applications. Four different examples as structural, fatigue, CFD analyses and structural optimization have been introduced in the present work. It turned out from the static structural and fatigue analyses, that the investigated damper has safety factor over the limit for both static structural and fatigue analyses, so it is suitable for the given load conditions. In the structural optimization process 34.36% mass reduction has been achieved. According to the coupled fluid dynamic and heat transfer simulations a rather stagnating air zone evolved between the engine and the damper during the operation, which can cause efficiency reduction of cooling fins mounted onto the housing. In light of the numerical results, the suitable damper position has been determined for the highest heat transfer.

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Zhao, Guang Yao, Peng Fu, Shu Wen Zhou, and Shan Ge Tong. "Dynamic Mechanical Analysis of Automotive Gearbox Casing." Advanced Materials Research 230-232 (May 2011): 539–43. http://dx.doi.org/10.4028/www.scientific.net/amr.230-232.539.

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After the three-dimensional solid modeling of the SG135 automobile gearbox, finite element analysis models of static, transient and harmonic response load are built based on correlation theory. On the basis of ADAMS dynamic simulation of different gearbox gears, transient load of the gearbox casing at different working gears is found out. With frequency response characteristic of gearbox casing analyzed at typical working conditions of first gear and reverse gear, the evaluation of some factors such as strength and stiffness are given out, which provides theory basis for further improvement of gearbox casing structure and strengthening weak links. Based on harmonic response analysis, the impact on gearbox casing structural vibration by harmonic excitation of the engine is imitated, and the match relation of frequency response between the gearbox and the engine is analyzed. Improvements about engine operational limits matching and gearbox structural design are proposed.

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Hu, Jie. "Gas Turbine Engines Safe Life Criterion Analysis." Applied Mechanics and Materials 533 (February 2014): 346–49. http://dx.doi.org/10.4028/www.scientific.net/amm.533.346.

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Life concepts have evolved and improved since the early period of the gas turbine engine. Early on, passing a 150-h test was the main "pass or fail" criteria used to qualify a new engine design to enter production and service. Engine life development and life prediction techniques evolved mostly in response to durability problems, customer demands, and/or regulatory involvement. The safe life and damage tolerance concepts have been the two most widely used design methods for producing components to meet life requirements. More recently, however, the combination of both life concepts is the preferred life method for both commercial and military and is required by the military in their engine structural development programs.

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Et. al., R. Manikandan,. "Design and Analysis of Butterfly Valve." Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 1S (April 11, 2021): 502–12. http://dx.doi.org/10.17762/turcomat.v12i1s.1915.

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The main objective of this project is shape optimization and structural stability of the butterfly valve for metallic and nonmetallic materials butterfly valve is mostly used in the engine carburetors need to make structural stability and shape optimization plays the main role for this component, design modifications and material comparative analysis done in ANSYS Structural modules and find the optimized shape through stress, strain and deformation results

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Chen, Jin Zhou, Cun Yun Pan, Wen Min Li, Lei Zhang, and Hu Chen. "The Study of Friction Power Loss of Piston Group of a Twin-Rotor Engine." Applied Mechanics and Materials 620 (August 2014): 375–81. http://dx.doi.org/10.4028/www.scientific.net/amm.620.375.

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Compared with the conventional piston engines, the new rotary engine has many significant advantages, such as smaller volume and higher power density. Current studies at home and abroad are mainly focusing on aspects of its structural design, kinematics, dynamics analysis, except mechanical efficiency. In conventional piston engines, frictional loss of the piston group accounted for 65% of the total friction power loss[1]. In order to provide the scientific basis for designing low friction piston of the rotary engine, this paper combine the average two-dimensional Reynolds equation, the asperity contacts equation, viscosity-temperature equation and loads balance equation, proposing a method for calculating the friction power loss, and the applying the method to calculate the friction power loss of piston group of a new rotary engine.

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Reinartz, Birgit U., and Wolfgang W. Koschel. "Thermal Analysis of Fluid-Structural Interaction in High-Speed Engine Flowfields." Journal of Propulsion and Power 17, no. 6 (November 2001): 1339–46. http://dx.doi.org/10.2514/2.5884.

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Zheng, Bin, Yong Qi Liu, Rui Xiang Liu, and Jian Meng. "Finite Element Analysis and Structural Improvement of Farm Engine Connecting Rod." Advanced Materials Research 291-294 (July 2011): 2413–16. http://dx.doi.org/10.4028/www.scientific.net/amr.291-294.2413.

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In this paper, with the ANSYS, stress distribution and safety factor of connecting rod were analyzed by using 3D finite element method. The results show that the exposed destructive position is the transition location of big end and connecting rod shank at maximum compression condition and maximum stretch condition. Maximum stress is 353MPa. Safety factor is 2.22. Maximum deformation is 0.0728mm. Based on the analysis, the structure of connecting rod is improved. Safety factor of connecting rod increase 12%.

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Boklok Choi and 이경로. "Structural Analysis on Crankshaft on the considering of Engine Dynamic Behavior." Journal of the Korean Society of Mechanical Technology 15, no. 5 (October 2013): 623–28. http://dx.doi.org/10.17958/ksmt.15.5.201310.623.

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Kumar, Chandan, and Nilamber Kumar Singh. "Structural and Thermal Analysis of an I.C. Engine Piston using ANSYS." Advanced Science, Engineering and Medicine 10, no. 3 (March 1, 2018): 369–73. http://dx.doi.org/10.1166/asem.2018.2140.

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