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Journal articles on the topic 'Crank case'

Author: Grafiati

Published: 4 June 2021

Last updated: 2 February 2022

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1

Yunan, Agustinus, Dimas Raya, and Rifda Ilahy Rosihan. "Analisis Upaya Menurunkan Cacat Produk Crank Case LH pada Proses Die Casting dengan Metode PDCA dan FMEA di PT. Suzuki Indo Mobil/Motor." Journal of Industrial and Engineering System 1, no. 1 (2020): 1–10. http://dx.doi.org/10.31599/jies.v1i1.160.

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 Suzuki Indo Mobil / Motorcycle is the largest motorcycle manufacturing industry in Indonesia today. Die Casting is one of the departments that is important in the manufacture of motorcycle parts. In the Die Cating section, there are a number of types of defects that exceed the company tolerance standards. During the February to July period, 228 pcs of defect products were found. For this reason, it is necessary to determine the most dominant factor in the occurrence of defects and determine the proposed improvement of the root problem. PDCA is a useful tool for continuous improvement an

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2

Ting, Kwun-Lon. "Five-Bar Grashof Criteria." Journal of Mechanisms, Transmissions, and Automation in Design 108, no. 4 (1986): 533–37. http://dx.doi.org/10.1115/1.3258765.

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In this paper, the five-bar Grashof criterion is proposed and proved. A five-bar linkage is a Class I linkage if lmax + lmin 1 + lmin 1 ≤ m + n is satisfied, otherwise it is a Class II linkage. Depending on the location of the two input links, a Class I linkage may be classified as (1) a triple-crank or a double-crank linkage if its two shortest links are either the input or fixed links; (2) a conditional double-crank or single-crank linkage if its shortest link is the fixed or an input link and the next shortest link is neither the fixed nor an input link; (3) a zero-crank linkage if none of

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3

Wardley-Smith, J. "Discharge of automobile crank-case oil into the environment." Oil and Petrochemical Pollution 2, no. 4 (1985): 305–7. http://dx.doi.org/10.1016/s0143-7127(85)90303-5.

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4

Sun, Wei Fang, Xiang Zhou Zheng, and Jing Rui Liang. "Dynamics of Flexible Slider-Crank Mechanism Based on the Floating Frame Reference Formulation." Applied Mechanics and Materials 456 (October 2013): 330–33. http://dx.doi.org/10.4028/www.scientific.net/amm.456.330.

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The slider-crank mechanism is a special case of the four bar linkage which is widely used in reciprocating machines. Flexible multi-body mechanisms that gain some motion through the deflection of flexible elements are classified as compliant mechanisms. Dynamics of flexible slider-crank mechanisms is presented in this paper. Both rigid and flexible parts are included in the slider-crank mechanisms. As one of the widely accepted dynamic analytical method for the multi-body system modeling, floating frame reference formulation has been applied to derive dynamic formulations. Simulations of dynam

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5

Sinatra, Rosario, and Jorge Angeles. "A Novel Approach to the Teaching of Planar Mechanism Dynamics – A Case Study." International Journal of Mechanical Engineering Education 31, no. 3 (2003): 201–14. http://dx.doi.org/10.7227/ijmee.31.3.2.

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We propose a novel approach to the teaching of undergraduate planar mechanism dynamics. To illustrate the approach, we use a case study, the dynamics of the planar slider-crank mechanism. In this case study, we make extensive use of an operator representing in two-dimensional form the cross-product of two vectors. Furthermore, by using the natural orthogonal complement, introduced elsewhere, we produce a systematic procedure to derive a dynamic model of the same class of mechanism. Subsequently, we illustrate how, with the use of the aforementioned operator, the dynamic balancing of this mecha

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6

Wang, Dong Yan, and Lian Hong Zhang. "Analytical Model Study of Ellipse Crank Arm Final Upset Forging Force on Slab Method." Advanced Materials Research 557-559 (July 2012): 1349–52. http://dx.doi.org/10.4028/www.scientific.net/amr.557-559.1349.

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According to the structure of the crank arm, the conformal mapping method was adopted to transform the elliptical section map of it to the round. Then by the slab method an analytical model for final upsetting force of the crank arm was established, which is a derivation based on assumptions of axisymmetric plastic forming status. Finally, a simulation was implemented in case of the second crank of crankshaft 6G32. Accordance to it the accuracy of the analytical model was examined. Further more the causes of the data deviation from the model and the simulation were analyzed in this thesis.

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7

Nakamura, Tadao, Kazuhide Ohta, Yoshihiko Irie, Iwao Honda, and Hideyuki Ishikawa. "Analysis of Vibratory and Acoustic Characteristics of Engine Crank Case." JOURNAL OF THE MARINE ENGINEERING SOCIETY IN JAPAN 24, no. 12 (1989): 578–82. http://dx.doi.org/10.5988/jime1966.24.12_578.

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8

MARCUS, GREIL. "Crank Prophet Bestride America, Grinning: The Case of David Thomas." Representations 84, no. 1 (2003): 123–38. http://dx.doi.org/10.1525/rep.2003.84.1.123.

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9

Siddharth, N. S., S. Vishakaraj, M. S. Alphin, M. Vigneshwar, and L. Vijayakumar. "Design of a Crank Operated Reciprocating Hacksaw." Applied Mechanics and Materials 852 (September 2016): 564–67. http://dx.doi.org/10.4028/www.scientific.net/amm.852.564.

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A conventional hacksaw requires a lot of effort and concentration from the operator not only for the accuracy of the job but also for his own safety. Although an electrical power hacksaw is a reliable option, the cost of the machine can prove to be high for small scale purposes. In this study, a crank operated reciprocating hacksaw is designed and fabricated. A slider crank mechanism is adopted in this design. The crank is rotated manually. This rotational motion is transmitted to the slider link, which is the hacksaw. The human effort is found to be much lesser than in the case of a conventio

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10

Chiang, C. H. "Design of Spherical Drag-Links Between Positions of Unity Velocity Ratio." Journal of Mechanisms, Transmissions, and Automation in Design 109, no. 4 (1987): 455–59. http://dx.doi.org/10.1115/1.3258817.

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While synthesizing a planar drag-link between positions of unity velocity can be reduced to a problem of synthesizing a planar crank-rocker, this is not the case with a spherical drag-link. Synthesis equations for designing spherical drag-links between positions of unit velocity ratio are derived from equations previously obtained for matching two prescribed velocity ratios. It has been shown that the loci of both crank pins are spherical ellipses and great circles. An example is given.

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11

김진용, 이계철, 조승범, and 나병철. "Characteristics of Emission in Gasoline Engine with Crank Case Oil Separator." Journal of the Korean Society of Mechanical Technology 14, no. 2 (2012): 5–10. http://dx.doi.org/10.17958/ksmt.14.2.201204.5.

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12

Grigore, Jan Cristian. "The Methods to Study the Influence of the Clearance in the Case of Great Speeds and Small Speeds." Advanced Materials Research 837 (November 2013): 88–92. http://dx.doi.org/10.4028/www.scientific.net/amr.837.88.

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In kinematic couplings, clearances are inevitable for their operation. The size of these clearances but as a consequence of use, causes a malfunction of the mechanism to which it belongs. The law of motion of driveline changes, big clearances, non-technological system causes vibration, leading to discomfort, uncertainty, and thus reach its degradation. In the paper we shall make a few of geometric and mechanical type considerations about the clearances in the linkages, linkages planes with joint rotation links. Based on mathematical algorithm developed and applied crank mechanism, the model pr

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13

Zhang, Wenjun, and Dan Zhang. "Conditions of crank existence for a particular case of the RSSR linkage." Mechanism and Machine Theory 28, no. 6 (1993): 845–50. http://dx.doi.org/10.1016/0094-114x(93)90027-s.

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14

Gómez, Georgina M., and Paolo Dini. "Making sense of a crank case: monetary diversity in Argentina (1999–2003)." Cambridge Journal of Economics 40, no. 5 (2016): 1421–37. http://dx.doi.org/10.1093/cje/bew034.

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15

Garg, Savita, Jai Singh, and D. V. Singh. "Availability analysis of crank-case manufacturing in a two-wheeler automobile industry." Applied Mathematical Modelling 34, no. 6 (2010): 1672–83. http://dx.doi.org/10.1016/j.apm.2009.09.016.

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16

Suareo, F. O., and K. C. Gupta. "Design of Quick-Returning R-S-S-R Mechanisms." Journal of Mechanisms, Transmissions, and Automation in Design 110, no. 4 (1988): 423–28. http://dx.doi.org/10.1115/1.3258939.

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An algebraic method is presented to synthesize quick-returning R-S-S-R mechanisms which satisfy the given time-ratio and follower oscillation angle requirements. In these designs, the three parameters, which define the follower spheric joint, satisfy a quadratic condition. When the shaft angle between the input and output shafts is zero, this quadratic condition reduces to the equation of a circle which is a familiar classical result for the planar case. The solution space for the quick-returning R-S-S-R linkage is such that, for each set of choices for crank length a2, follower axial distance

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17

Britz, D., R. Baronas, E. Gaidamauskaitė, and F. Ivanauskas. "Further Comparisons of Finite Difference Schemes for Computational Modelling of Biosensors." Nonlinear Analysis: Modelling and Control 14, no. 4 (2009): 419–33. http://dx.doi.org/10.15388/na.2009.14.4.14467.

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Simulations are presented for a reaction-diffusion system within a thin layer containing an enzyme, fed with a substrate from the surrounding electrolyte. The chemical term is of the nonlinear Michaelis-Menten type and requires a technique such as Newton iteration for solution. It is shown that approximating the nonlinear chemical term in these systems by a linearised form reduces both the accuracy and, in the case of second-order methods such as Crank-Nicolson, reduces the global error order from O(δT2) to O(δT). The first-order methods plain backwards implicit with and without linearisation,

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18

ÖZUĞURLU, E. "A NOTE ON THE NUMERICAL APPROACH FOR THE REACTION–DIFFUSION PROBLEM WITH A FREE BOUNDARY CONDITION." ANZIAM Journal 51, no. 3 (2010): 317–30. http://dx.doi.org/10.1017/s1446181110000817.

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AbstractThe equation modelling the evolution of a foam (a complex porous medium consisting of a set of gas bubbles surrounded by liquid films) is solved numerically. This model is described by the reaction–diffusion differential equation with a free boundary. Two numerical methods, namely the fixed-point and the averaging in time and forward differences in space (the Crank–Nicolson scheme), both in combination with Newton’s method, are proposed for solving the governing equations. The solution of Burgers’ equation is considered as a special case. We present the Crank–Nicolson scheme combined w

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19

Xin, Dianbo, Jianmei Feng, Liqing Ding, Donghui Yang, and Xueyuan Peng. "Experimental investigation of pressure distribution between the piston rings and its formation in reciprocating compressors." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 226, no. 11 (2012): 2701–12. http://dx.doi.org/10.1177/0954406212438151.

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The severe non-uniformity of pressure distribution has been suggested as the essential reason for the premature failure of piston rings in reciprocating compressors. A test rig was built to investigate the dynamic pressure distribution and its formation process, so that the root cause of the non-uniform pressure distribution could be revealed. The experimental results showed that the pressure distribution between the rings was always significantly non-uniform under various test conditions and the first ring bore more than 75% of the total pressure difference. Further analysis of the experiment

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20

Hamzah, Amir Syafiq Syamin Syah, and Ali Hassan Mohamed Murid. "Nonlinear Partial Dierential Equations Model Related to Oxidation Pond Treatment System: A Case Study of mPHO at Taman Timor Oxidation Pond, Johor Bahru." MATEMATIKA 34, no. 2 (2018): 293–311. http://dx.doi.org/10.11113/matematika.v34.n2.1038.

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This study presents a mathematical model examining wastewater pollutant removalthrough an oxidation pond treatment system. This model was developed to describethe reaction between microbe-based product mPHO (comprising Phototrophic bac-teria (PSB)), dissolved oxygen (DO) and pollutant namely chemical oxygen demand(COD). It consists of coupled advection-diusion-reaction equations for the microor-ganism (PSB), DO and pollutant (COD) concentrations, respectively. The couplingof these equations occurred due to the reactions between PSB, DO and COD to pro-duce harmless compounds. Since the model is

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21

Tanaka, Yasuhito, Yoshinori Takakura, Shohei Omokawa, Tsukasa Kumai, and Kazuya Sugimoto. "Crank-Shaped Arthrodesis for a Flatfoot with a Bipartite Navicular: A Case Report." Foot & Ankle International 27, no. 9 (2006): 734–37. http://dx.doi.org/10.1177/107110070602700914.

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22

Singh, Paramdeep, and Harpuneet Singh. "Application of Lean Tool (Value Stream Mapping) in Minimisation of the Non-Value Added Waste (A Case Study of Tractor Industry)." Applied Mechanics and Materials 110-116 (October 2011): 2062–66. http://dx.doi.org/10.4028/www.scientific.net/amm.110-116.2062.

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Lean manufacturing has been proved to be an effective management philosophy for improving businesses in a competitive market by eliminating non-value added waste and improving in process operations. Value stream mapping is an important tool used to identify the opportunities for various lean techniques. The present research mainly focuses on the description of a model that is developed to contrast the “before” and “after” scenarios in detail in order to obtain the various benefits such as reduced production lead time, lower work in process inventory [1] and proper utilisation of the workforce.

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23

Lu, Yingying, and Wanhua Su. "Effects of the injection parameters on the premixed charge compression ignition combustion and the emissions in a heavy-duty diesel engine." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 231, no. 7 (2017): 915–26. http://dx.doi.org/10.1177/0954407017701023.

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Numerous combustion strategies have been suggested for compression ignition engines in order to meet the stringent emission regulations with minimal sacrifice in the fuel economy. Premixed charge compression ignition combustion has the potential to reduce the nitrogen oxide emissions and the soot emissions while maintaining a high thermal efficiency and has become the research focus recently. Experiments and simulations were used to study the effects of the injection mode and the injection timing on the premixed charge compression ignition combustion and the emissions in a heavy-duty diesel en

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24

Ramakrishnan, V., R. Thamilarasan, and K. Purushothaman. "Performance Evaluation of EGR in Two Stroke I.C. Engine." Applied Mechanics and Materials 812 (November 2015): 60–63. http://dx.doi.org/10.4028/www.scientific.net/amm.812.60.

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Petrol engines are known for their simplicity, low cost and maintenance. However nowadays use of two stroke petrol engines are fading away from the market. An attempt has been made here to revive the use of these old engines by using Exhaust Gas Recirculation (EGR) to improve performances.Short circuiting of fresh charge is an important contributing factor for reduction in performance in two stroke engines. Our project is aimed to reduce short circuiting of fresh charge by admitting cooled exhaust gas to pass through reed valves fitted at the upper end of the transfer passage, in a crank case

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25

Validi, AbdoulAhad, Jyh-Yuan Chen, and Akbar Ghafourian. "HCCI Intelligent Rapid Modeling by Artificial Neural Network and Genetic Algorithm." Journal of Combustion 2012 (2012): 1–11. http://dx.doi.org/10.1155/2012/854393.

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A Dynamic model of Homogeneous Charge Compression Ignition (HCCI), based on chemical kinetics principles and artificial intelligence, is developed. The model can rapidly predict the combustion probability, thermochemistry properties, and exact timing of the Start of Combustion (SOC). A realization function is developed on the basis of the Sandia National Laboratory chemical kinetics model, and GRI3.0 methane chemical mechanism. The inlet conditions are optimized by Genetic Algorithm (GA), so that combustion initiates and SOC timing posits in the desired crank angle. The best SOC timing to achi

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26

Kurniawan, Dicky. "THE EFFECT OF IMPLEMENTATION PREVENTIVE MAINTENANCE SYSTEM AND THE VALUES OF AVAILABILITY, PERFORMANCE AND QUALITY TOWARDS OVERALL EQUIPMENT EFFECTIVENESS (Case Study in PT. Astra Honda Motor)." Business and Entrepreneurial Review 11, no. 2 (2017): 121. http://dx.doi.org/10.25105/ber.v11i2.1931.

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The background of this research refers to many companies that cannot identify about the system effect and overall equipment effectiveness (OEE) values, and cannot implement the right system continuously. So that, this research is to investigate some factors that influence the OEE values. <br />The objective of this research were to investigate the effects of preventive maintenance to OEE and to decide whether of availability, performance, quality that most contribute to OEE values at PT. <br />Astra Honda Motor. <br />The design of this research applies case study to examine

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27

Lu, Xinjian. "Kinematics Analysis of Multi-link Mechanism for Miniature Servo Press Based on Matlab." MATEC Web of Conferences 207 (2018): 02006. http://dx.doi.org/10.1051/matecconf/201820702006.

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The degree of freedom for a multi-link drive mechanism of a 50kN miniature servo press was calculated. The kinematics equations of the mechanism was established based on the rod group method. The choice or design basis for rod length and some hinge points were proposed. The multi-linkage mechanism’s line segment model was constructed in SolidWorks and a set of design parameters was obtained that met the requirements. The M file of kinematic equations were wrote and calculated in Matlab and the displacement, velocity and acceleration curve of the slider were obtained. Compared with the crank-sl

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28

Atangana, Abdon, and Adem Kilicman. "On the Generalized Mass Transport Equation to the Concept of Variable Fractional Derivative." Mathematical Problems in Engineering 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/542809.

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The hydrodynamic dispersion equation was generalized using the concept of variational order derivative. The modified equation was numerically solved via the Crank-Nicholson scheme. The stability and convergence of the scheme in this case were presented. The numerical simulations showed that, the modified equation is more reliable in predicting the movement of pollution in the deformable aquifers, than the constant fractional and integer derivatives.

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29

Theopilus, Yansen, William Jonathan, and Yusan Gustin. "Pengembangan Alat Bantu Material handling untuk Meminimasi Beban Kerja Operator Produksi Crank Case di PT.X." Jurnal Rekayasa Sistem Industri 7, no. 2 (2018): 85. http://dx.doi.org/10.26593/jrsi.v7i2.2832.85-98.

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<p><em>This research aims to evaluate the workload of production operators at PT. X and develop a product/tools that can minimize the workload of production operators in PT.X factory. PT.X is a motorcycle manufacture company that produces sport bike, duck bike, and scooter bike along with its components. One of the main components produced in PT. X is crankcase. Crankcase function as a house for motorcycle machine components such as generator, oil pumps, clutches, crankshaft, transmission gear, and lubricating oil. This research focuses on crankcase production because the crankcase

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30

Korematsu, Koji, and Makoto Hasegawa. "Total-System Simulation Model of Two-Stroke Cycle, Crank Case Compression-Type, Spark Ignition Engines." Transactions of the Japan Society of Mechanical Engineers Series B 59, no. 560 (1993): 1421–26. http://dx.doi.org/10.1299/kikaib.59.1421.

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31

Yaqubi, Sadeq, Morteza Dardel, and Hamidreza Mohammadi Daniali. "Nonlinear dynamics and control of crank–slider mechanism with link flexibility and joint clearance." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 230, no. 5 (2015): 737–55. http://dx.doi.org/10.1177/0954406215593773.

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Dynamical behaviors and control of planar crank–slider mechanism considering the effects of joint clearance and link flexibility are studied. A control scheme for maintaining continuous contact is proposed. It was observed that using one actuator for control scheme might cause the actuator to reach its saturation limit, a problem that was bypassed by installing an additional actuator on connecting rod. In one actuator case, only continuous contact can be obtained, while with the aid of two actuators, point contact can be achieved. Great improvements in the performance of mechanism and reductio

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32

Mişicu, Ş., та M. Rizea. "Speeding of α Decay in Strong Laser Fields". Open Physics 14, № 1 (2016): 81–87. http://dx.doi.org/10.1515/phys-2016-0001.

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AbstractAn extremely high-intensity laser interaction with a nucleus that is undergoing spontaneous α-decay is investigated in the framework of the time-dependent one-body Schrödinger equation solved by a Crank-Nicolson scheme associated with transparent boundary conditions. The wave-packet dynamics are determined for various laser intensities and frequencies for continuous waves and for sequences of few-cycle pulses. We show that pulse sequences containing an odd number of half-cycles determine an enhancement of the tunneling probability and therefore a drastic decrease of alpha half-lives co

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33

Ekberg, Kristoffer, Lars Eriksson, and Christofer Sundström. "Electrification of a Heavy-Duty CI Truck—Comparison of Electric Turbocharger and Crank Shaft Motor." Energies 14, no. 5 (2021): 1402. http://dx.doi.org/10.3390/en14051402.

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A combustion engine-driven vehicle can be made more fuel efficient over some drive cycles by, for example, introducing electric machines and solutions for electrical energy storage within the vehicle’s driveline architecture. The possible benefits of different hybridization concepts depend on the architecture, i.e., the type of energy storage, and the placement and sizing of the different driveline components. This paper examines a diesel electric plug-in hybrid truck, where the powertrain includes a diesel engine supported with two electric motors, one supporting the crank shaft and one the t

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34

Litzenberger, Stefan, Franziska Mally, and Anton Sabo. "Influence of Different Seating and Crank Positions on Muscular Activity in Elite Handcycling - A Case Study." Procedia Engineering 112 (2015): 355–60. http://dx.doi.org/10.1016/j.proeng.2015.07.262.

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35

Beale, D. G., and R. A. Scott. "The Stability and Response of a Flexible Rod in a Quick Return Mechanism: Large Crank Case." Journal of Sound and Vibration 166, no. 3 (1993): 463–76. http://dx.doi.org/10.1006/jsvi.1993.1306.

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36

Sharma, R. K. "Development of engine crank-case oil formulations for oxidation stability using indigenously blended lubricant base-stocks." Lubrication Science 9, no. 1 (1996): 97–102. http://dx.doi.org/10.1002/ls.3010090106.

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37

Atangana, Abdon, and S. C. Oukouomi Noutchie. "Stability and Convergence of a Time-Fractional Variable Order Hantush Equation for a Deformable Aquifer." Abstract and Applied Analysis 2013 (2013): 1–8. http://dx.doi.org/10.1155/2013/691060.

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The medium through which the groundwater moves varies in time and space. The Hantush equation describes the movement of groundwater through a leaky aquifer. To include explicitly the deformation of the leaky aquifer into the mathematical formulation, we modify the equation by replacing the partial derivative with respect to time by the time-fractional variable order derivative. The modified equation is solved numerically via the Crank-Nicolson scheme. The stability and the convergence in this case are presented in details.

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38

Zainudin, Mohd Farid, Abu Bakar Rosli, Gan Leong Ming, Tanti Zanariah Shamshir Ali, and Billy Anak Sup. "Design and Stress Simulation of Crankshaft for Slider-Crank Drive Stirling Engine." Applied Mechanics and Materials 699 (November 2014): 678–83. http://dx.doi.org/10.4028/www.scientific.net/amm.699.678.

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In this present work, the design and simulation of crankshaft for multi-cylinder Stirling engine is studied based on finite element analysis. The proposed crankshaft design is based on the typical crosshead slider-crank mechanism that is being used with the consideration of design needs for multi-cylinder Stirling engine. The study focused on the piston-crankshaft assembly that is subjected to compression load in Stirling cycle. Based on the simulation results, the maximum von Mises stress for crankshaft model varies from 0.82 MPa at 1 bar charge pressure to 1.65 MPa at 20 bar charge pressure.

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39

Alanazi, A. A., Sultan Z. Alamri, S. Shafie, and Shazirawati Mohd Puzi. "Crank-Nicolson Scheme for Solving the Modified Nonlinear Schrodinger Equation." International Journal of Numerical Methods for Heat & Fluid Flow 31, no. 8 (2021): 2789–817. http://dx.doi.org/10.1108/hff-10-2020-0677.

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Purpose The purpose of this paper is to obtain the nonlinear Schrodinger equation (NLSE) numerical solutions in the presence of the first-order chromatic dispersion using a second-order, unconditionally stable, implicit finite difference method. In addition, stability and accuracy are proved for the resulting scheme. Design/methodology/approach The conserved quantities such as mass, momentum and energy are calculated for the system governed by the NLSE. Moreover, the robustness of the scheme is confirmed by conducting various numerical tests using the Crank-Nicolson method on different cases o

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40

Guagliano, M., A. Terranova, and L. Vergani. "Theoretical and Experimental Study of the Stress Concentration Factor in Diesel Engine Crankshafts." Journal of Mechanical Design 115, no. 1 (1993): 47–52. http://dx.doi.org/10.1115/1.2919323.

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The paper deals with the bending stress concentration evaluation of a marine diesel engine crankshaft. Experimental strain gauge tests were conducted on a full scale single crank to measure the stress concentration near the crank fillet. A three-dimensional finite element schematization of the crankshaft and the linear elastic calculations conducted show the stress field along the most overstressed zone and how it is influenced by different load conditions. It is now possible to calculate accurately the stress concentration factor Kt. However, a mesh of a mechanical element with a complex geom

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41

Neda, Monika, Fran Pahlevani, and Jiajia Waters. "Sensitivity Analysis and Computations of the Time Relaxation Model." Advances in Applied Mathematics and Mechanics 7, no. 1 (2015): 89–115. http://dx.doi.org/10.4208/aamm.2013.m296.

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AbstractThis paper presents a numerical study of the sensitivity of a fluid model known as time relaxation model with respect to variations of the time relaxation coefficientχ. The sensitivity analysis of this model is utilized by the sensitivity equation method and uses the finite element method along with Crank Nicolson method in the fully discretization of the partial differential equations. We present a test case in support of the sensitivity convergence and also provide a numerical comparison between two different strategies of computing the sensitivity, sensitivity equation method and fo

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42

Humelnicu, Costel, Valentin Amortila, and Elena Mereuta. "Fatigue life investigation on a MAC engine piston." MATEC Web of Conferences 178 (2018): 06013. http://dx.doi.org/10.1051/matecconf/201817806013.

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In MAC (Diesel) engines case, the shape of the piston head has an important influence on burning processes and, consequently on engine performance. Since the piston is subjected to high cyclic stresses during the blasting phase, a fatigue phenomenon occur. The piston design and material must provide a high fatigue resistance and a low weight, leading to low dynamic loading of the crank shaft and piston rod. The paper try to investigate the piston fatigue behavior, for several head shapes and materials, in order to establish an optimal design.

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Kim, K.-Y., and B.-M. Kwak. "A Modified Selective Precision Synthesis Technique for Planar Four-Bar Rigid-Body Guidance." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 209, no. 1 (1995): 39–47. http://dx.doi.org/10.1243/pime_proc_1995_209_120_02.

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The selective precision synthesis (SPS) technique is modified by adopting the displacement matrix approach and using binary links as basic elements. This modified SPS (MSPS) can thus be applied to the synthesis of slider-crank mechanisms as well. With the introduction of ‘maximum allowable angular deviation’, the mechanism construction error (MCE) at a design point can be eliminated. The link length adjustment is also found to be a useful tool for the case of infinite MCE. The proposed MSPS is shown to be logical and effective by a practical design example.

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Sultan, I. A., and A. Kalim. "On the kinematics and synthesis of a geared five-bar slider–crank mechanism." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 225, no. 5 (2011): 1253–61. http://dx.doi.org/10.1177/2041298310392650.

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The geared five-bar mechanism possesses kinematic abilities that qualify its utility in various industrial applications. Small changes to the mechanism topology or dimensions create new designs with different motion characteristics. This article presents design-orientated kinematical insights and mathematical treatments for the embodiment of the mechanism in which the end gear is eccentrically pivoted to a sliding element. For its synthesis, a kinematic classification is introduced and approximate curves are used to guide the motion of the slider. A gradient-based Levenberg–Marquardt formulati

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Zhang, Ying Hui, Wei Dong He, and Xiu Shuang Yang. "Dynamical Formulation and Analysis of Double Crank Ring-Plate-Type Pin-Cycloidal Gear Planetary Drive." Applied Mechanics and Materials 44-47 (December 2010): 1022–28. http://dx.doi.org/10.4028/www.scientific.net/amm.44-47.1022.

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On the assumption that the ring-plate and gear case as rigid body, taken into account the influence of arm bearing and support bearing’s stiffness, and the distortion of gear at meshing, paper built a dynamical model for double crank ring-plate-type pin-cycloidal gear planetary drive, calculated the meshing stiffness for the involute gear and the pin-cycloid gear by program, based on Newton second law, a 33-DOF dynamical model include input and output shaft, ring-plate, involute gear and gear box was formulated by lumped-parameter method， obtained the natural frequency and vibration character

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ZENG, X. C., I. GUO, and S. P. ZHU. "PRICING EUROPEAN OPTIONS ON REGIME-SWITCHING ASSETS: A COMPARATIVE STUDY OF MONTE CARLO AND FINITE-DIFFERENCE APPROACHES." ANZIAM Journal 59, no. 2 (2017): 183–99. http://dx.doi.org/10.1017/s1446181117000335.

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A numerical comparison of the Monte Carlo (MC) simulation and the finite-difference method for pricing European options under a regime-switching framework is presented in this paper. We consider pricing options on stocks having two to four volatility regimes. Numerical results show that the MC simulation outperforms the Crank–Nicolson (CN) finite-difference method in both the low-frequency case and the high-frequency case. Even though both methods have linear growth, as the number of regimes increases, the computational time of CN grows much faster than that of MC. In addition, for the two-sta

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Siemiątkowski, Zbigniew. "Computerised grinding procedure for large scale crankshaft machining." MATEC Web of Conferences 252 (2019): 01002. http://dx.doi.org/10.1051/matecconf/201925201002.

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The paper describes sequence of machining operations that leads to the desired quality of the produced crankshaft, as well as in-situ inspection, correction and compensation procedures performed and controlled by computer. The form deviation values after correction are being compared with those obtained before. In case of crank pins, values of form deviations, and hence those of corrections, are much larger than for main journals. During the measurement, the probe collects data from 3600 points per revolution, and then averaging procedure reduces data down to 360 points. There are several algo

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Jooma, R., and C. Harley. "Heat Transfer in a Porous Radial Fin: Analysis of Numerically Obtained Solutions." Advances in Mathematical Physics 2017 (2017): 1–20. http://dx.doi.org/10.1155/2017/1658305.

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A time dependent nonlinear partial differential equation modelling heat transfer in a porous radial fin is considered. The Differential Transformation Method is employed in order to account for the steady state case. These solutions are then used as a means of assessing the validity of the numerical solutions obtained via the Crank-Nicolson finite difference method. In order to engage in the stability of this scheme we conduct a stability and dynamical systems analysis. These provide us with an assessment of the impact of the nonlinear sink terms on the stability of the numerical scheme employ

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Pourghanbar, Somayeh, Jalil Manafian, Mojtaba Ranjbar, Aynura Aliyeva, and Yusif S. Gasimov. "An Efficient Alternating Direction Explicit Method for Solving a Nonlinear Partial Differential Equation." Mathematical Problems in Engineering 2020 (November 23, 2020): 1–12. http://dx.doi.org/10.1155/2020/9647416.

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In this paper, the Saul’yev finite difference scheme for a fully nonlinear partial differential equation with initial and boundary conditions is analyzed. The main advantage of this scheme is that it is unconditionally stable and explicit. Consistency and monotonicity of the scheme are discussed. Several finite difference schemes are used to compare the Saul’yev scheme with them. Numerical illustrations are given to demonstrate the efficiency and robustness of the scheme. In each case, it is found that the elapsed time for the Saul’yev scheme is shortest, and the solution by the Saul’yev schem

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Xin, Shao Jie. "Reeved Tooling Design and Finite Element Analysis on Stators of a 400MW Generator." Applied Mechanics and Materials 455 (November 2013): 593–97. http://dx.doi.org/10.4028/www.scientific.net/amm.455.593.

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Aiming at the time and labor issues that exist when reeved tools are used to reeve stator cores of different sizes in the case of 400MW gas generator, this article gives a new tooling structure design based on parallel double-crank mechanism for 400MW generators. The tooling enables fast transition between reeving internal and external stators of two different sizes. Three-dimensional modeling and virtual assembly are completed based on software UG, and finite element analysis of tooling structure is performed using software ABAQUS. The results indicate that this newly-designed reeved tooling

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