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Littérature scientifique sur le sujet « Crank-slider mechanism »

Auteur : Grafiati

Publié le 4 juin 2021

Mis à jour le 14 février 2022

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Articles de revues sur le sujet "Crank-slider mechanism"

1

Qian, Yu, Yi Cao, Yuan Wei Liu et Hui Zhou. « Forward Kinematics Simulation Analysis of Slider-Crank Mechanism ». Advanced Materials Research 308-310 (août 2011) : 1855–59. http://dx.doi.org/10.4028/www.scientific.net/amr.308-310.1855.

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This paper mainly addressed the kinematics simulation of the Slider-Crank mechanism. After proposing a mathematical model for the forward displacement of the slider-crank mechanism, the mathematical models for the forward velocity and acceleration of the slider-crank mechanism are constructed, respectively and the simulation models for the forward kinematics of the slider-crank mechanism are constituted in the Matlab/Simulink simulation platform. Finally the forward kinematics simulation of the slider-crank mechanism was successfully accomplished based on Matlab/Simulink. Examples of the simulation for the forward kinematics of a slider-crank mechanism are given to demonstrate the above-mentioned theoretical results.

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Tomić, Miša, Miloš Milošević, Nevena Tomić, Nenad D. Pavlović et Vukašin Pavlović. « REMOTE CONTROL OF THE MECHATRONIC REDESIGNED SLIDER-CRANK MECHANISM IN SERVICE ». Facta Universitatis, Series : Mechanical Engineering 15, n^o 2 (2 août 2017) : 257. http://dx.doi.org/10.22190/fume170510013t.

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Slider-crank mechanisms are used in many machines where there is a need to transform rotary motion into translation, and vice versa. Implementation of the control into a mechanical assembly of the slider-crank mechanism offers a wide range of applications of such controlled mechanism in mechatronic systems. This paper shows an example of the remote control of the angular velocity of the crank in a mechatronic redesigned slider-crank mechanism in order to achieve the desired motion of the slider. The remote control is achieved over the Internet connection and the appropriate software which is executed in the user’s internet browser. The aim of this paper is to present the applied control algorithm as well as to explain advantages of the possibility to remotely run a mechatronic redesigned slider-crank mechanism in service. This is done through an example of using a controlled slider-crank mechanism in a remote laboratory experiment.

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3

Cheng, Shouguo, et Shulin Liu. « Dynamic Analysis of Slider-Crank Mechanism with a Cracked Rod ». Mathematical Problems in Engineering 2018 (2 septembre 2018) : 1–7. http://dx.doi.org/10.1155/2018/8540546.

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The dynamical equation of the slider-crank mechanism is established by using Lagrange equation and Newton’s second law. The slider-crank mechanism with an open crack rod is investigated and then establishes the equivalent mechanics model by a massless torsional spring to simulate the influence of the crack in the rod, and the mechanism of a cracked rod is divided into two subsystems. The dynamical equation of the slider-crank mechanism with a crack rod is established. Comparing the dynamic analysis results between with and without crack in the rod, the results show that the existence of the crack leads to a great change in the motion characteristics of the slider. The calculated maximum Lyapunov exponent is positive, which shows that the movement of the slider in the crank slider mechanism with a cracked rod is chaotic.

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4

Sun, Wei Fang, Xiang Zhou Zheng et Jing Rui Liang. « Dynamics of Flexible Slider-Crank Mechanism Based on the Floating Frame Reference Formulation ». Applied Mechanics and Materials 456 (octobre 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 dynamics of flexible slider-crank mechanisms have been carried out using Matlab. It was shown that flexibility of parts has a certain extent effects on mechanical properties of flexible system that disagree with that of rigid ones. Keywords: Floating frame reference formulation; Slider-crank; Deformation; Flexible multi-body

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Karkoub, M. A., et M. Zribi. « Active damping of the elastodynamic vibrations of a flexible slider-crank mechanism using an energy approach ». Proceedings of the Institution of Mechanical Engineers, Part K : Journal of Multi-body Dynamics 215, n^o 1 (1 mars 2001) : 7–20. http://dx.doi.org/10.1243/1464419011544303.

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In this paper, the problem of active damping of the elastodynamic vibrations of a flexible slider-crank mechanism is addressed. The slider-crank mechanism is such that the connecting rod is flexible and the crank link is rigid. The slider-crank mechanism system is underactuated since the connecting rod is not directly controlled. A dynamic model for the slider-crank mechanism is derived using the Hamiltonian principle. Then, a control scheme based on an energy approach is proposed. The control scheme uses the passivity of the system to eliminate the vibrations of the flexible connecting rod. Simulation results are given to illustrate the theoretical developments.

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Han, Z. G., et Qing Jian Liu. « Dynamic Analysis on Crank-Slider Mechanism of Reciprocating Pump ». Materials Science Forum 697-698 (septembre 2011) : 676–80. http://dx.doi.org/10.4028/www.scientific.net/msf.697-698.676.

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The crank-slider mechanism is the key component in reciprocating pumps. With the increase of the rotational speed of the crank-slider mechanism, the vibration and working noise of reciprocating pumps increase. Based on the multi-body dynamics theory, the dynamic model of the crank-slider mechanism of reciprocating pumps is proposed. A numerical example is given and the validity of the procedure developed here is demonstrated by analyzing the dynamic behavior of a typical crank-slider mechanism of the reciprocating pump. The model can well simulate the dynamic response of the mechanism, which can enable designers to obtain required information on the analysis and design of reciprocating pumps.

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Fernandez, Victor. « Characteristics of Slider Crank Mechanism Using Modeling Simulations ». ACMIT Proceedings 4, n^o 1 (19 mars 2017) : 127–35. http://dx.doi.org/10.33555/acmit.v4i1.67.

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This document will analyze the different effects of the length and the angular velocity affecting theperformance of the slider crank system. The performance of the slider crank system is simulated and shownusing MATLAB with reference of the model represented by a mathematical formula. The result of thesimulation is represented by several graphs, showing the relation of the length and angular velocity of therotary motion of the slider crank mechanism and the angle generated by the translational motion of theslider.

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Yuan, Rui, Yu Sun, Wen Hai Fan, Kai Wu et Zheng Jun Chen. « Research on Balancing Method for Inertia Force of Slider-Crank Mechanism with Small Linkage Ratio ». Advanced Materials Research 591-593 (novembre 2012) : 2011–15. http://dx.doi.org/10.4028/www.scientific.net/amr.591-593.2011.

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In view of the difficult balance of inertia force for the slider-crank mechanism, on the basis of analyzing inertia force of the slider-crank mechanism, a new balancing method of inertia force was proposed for the slider-crank mechanism with small linkage ratio, the rotary mass and the moving mass had replaced the mechanism mass, the inertia force of rotary mass was balanced by rotary weight counterbalance, a spring was disposed by slider, it provided variable elastic force and balanced the inertia force of moving mass. Then the balancing method was analyzed deeply and the theoretical derivation was made, the results show that this balancing method would achieved approximately balance for inertia force of the slider-crank mechanism with small linkage ratio.

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ADESOLA, OLADEJO KOLAWOLE, ADEKUNLE NURUDEEN OLATUNDE, ADETAN DARE, ABU RAHAMAN et ORIOLOWO KOLAWOLE TAOFIK. « DEVELOPMENT AND APPLICATION OF A COMPUTER PROGRAM FOR FOUR-BAR LINKAGE AND SLIDER-CRANK MECHANISMS ». Journal of Engineering Studies and Research 26, n^o 3 (27 juillet 2020) : 28–38. http://dx.doi.org/10.29081/jesr.v26i3.204.

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Complex mathematical problems have been solved with the aid of software application to obtain reliable results. The positional kinematic analysis of a slider crank mechanism involves computation of the motion parameters: linear displacement, velocity and acceleration of the slider; and angular velocity and angular acceleration of the connecting rod for every 300 variation of the crank angle. This study aimed to develop a customized software which can be used to efficiently analyse a given design of a four-bar and a slider-crank mechanisms. A program was written using VB (Visual Basic) programming language for the equations of angular velocities and angular acceleration of the coupler and follower for the four-bar linkage and the linear velocity and acceleration of the piston for the slider crank mechanism. The program was tested with different parameters for the mechanisms and the solutions compared with the results from manual calculations. The findings revealed that there were no differences (p ≤ 0.05) between the results using the program and manual calculations, which imply the accuracy of the program. It can be concluded that the program could be used to solve problems of four- bar linkage and slider-crank mechanisms.

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Jomartov, A. A., S. U. Joldasbekov et Yu M. Drakunov. « Dynamic synthesis of machine with slider-crank mechanism ». Mechanical Sciences 6, n^o 1 (2 avril 2015) : 35–40. http://dx.doi.org/10.5194/ms-6-35-2015.

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Abstract. In this paper we consider the formulation and solution of the task of a dynamic synthesis machine with an asynchronous electric motor and a slider-crank mechanism. The constant parameters of the slider-crank mechanism (mass and moments of inertia and centers of gravity of links) and the parameters of the electrical motor are defined. The laws of motion of the machine and kinematic parameters of the mechanism are considered as given. We have developed the method of optimal dynamic synthesis of the machine, which consists of an asynchronous electric motor and a slider-crank mechanism. The criterion of optimization of the dynamic synthesis of a machine is the root mean square sum of the moments of driving forces, the forces of resistance and inertia forces which are reduced to the axis of rotation of the crank. The method of optimal dynamic synthesis of a machine can be used in the design of new and the improvement of known mechanisms and machines.

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Thèses sur le sujet "Crank-slider mechanism"

1

Gregerson, David Lee. « An investigation of chaos in a single-degree-of-freedom slider-crank mechanism ». Thesis, Georgia Institute of Technology, 1989. http://hdl.handle.net/1853/16805.

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Mauntler, Nathan A. « Kinematic and dynamic behavior of a wearing joint in a crank-slider mechanism ». [Gainesville, Fla.] : University of Florida, 2009. http://purl.fcla.edu/fcla/etd/UFE0024958.

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Ong, Chin Guan. « Shaking and Balance of a Convertible One- and Two-Cylinder Reciprocating Compressor ». Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/31433.

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This research involves the study of a one- and two-cylinder convertible reciprocating Freon compressor for air conditioning or refrigeration purposes. The main concern is the reduction of the vibration (noise) caused during the operation of the compressor. Vibration is a main concern when the compressor is shifted from the one-cylinder operation to the two-cylinder operation mode and the reverse of this shift. The objectives for this research are (1) to investigate the shaking force due to the reciprocating mass at high frequencies, which are up to 4600 Hz (80w) in this research; (2) to determine the dominant force for compressor vibration among the three possible sources of shaking force due to reciprocating mass, impact forces due to clearance at the connecting rod - piston joint, and the z-axis force from the motor torque due to the rotor's conductor rods being skewed at an angle; (3) to minimize the difference in change of kinetic energies when switching between the one- and two-cylinder operating modes of the compressor. The properties of the vibration in one- and two-cylinder operation have been studied and results have been analyzed in terms of kinetic energies generated in different setting of operation of the compressor. Dynamic simulation for the impact force is computed using SIMULINK. The Z-axis force due to the motor is computed. Results indicated that shaking force due to the reciprocating mass is the dominant force for only the first two harmonics (w, 2w). An optimization routine based on Hooke and Jeeves pattern search method is developed and an optimized setting of angle, force, and torque for balancing of the crankshaft to achieve objective (3) is determined.
Master of Science

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4

Avanço, Rafael Henrique. « Análise da dinâmica não-linear de pêndulos com excitação paramétrica por um mecanismo biela-manivela ». Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/18/18149/tde-27052015-113137/.

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O presente trabalho trata da análise da dinâmica de um pêndulo simples excitado em seu suporte por um mecanismo biela-manivela de forma ideal e não-ideal. No caso ideal, verifica-se que o resultado da excitação por este tipo de mecanismo se aproxima do resultado da excitação harmônica de suporte do pêndulo quando o raio da manivela é suficientemente pequeno em comparação com o comprimento da biela. A equação diferencial do sistema é resolvida numericamente e resultados do comportamento pendular são obtidos através de mapas de fase, histórico no tempo e seções de Poincaré. Expoentes de Lyapunov são, também, obtidos para a análise de casos caóticos posteriormente comparados com diagramas de bifurcação. Bacias de atração são desenhadas para os resultados estáveis do pêndulo: oscilatórios ou rotativos. Os resultados obtidos para a excitação por biela-manivela são dos mesmos tipos de movimento observados no caso do pêndulo excitado harmonicamente no suporte, entre eles: ponto fixo, oscilação, rotação pura, oscilação-rotação e o caos. Para a frequência de ressonância principal observam-se resultados caóticos em faixas mais largas de amplitude quando o raio de manivela se aproxima do comprimento da biela. Em frequências ressonantes menores nenhuma relação desse tipo pôde ser estabelecida. Uma análise utilizando o mesmo mecanismo é também feita com excitação por potência limitada de um motor elétrico linear de corrente contínua onde se investigou o efeito de feedback dado pelo pêndulo sobre o motor. Esses resultados são comparados com o caso ideal com a manivela acionada com rotação constante. Observa-se uma supressão do caos no caso não-ideal em casos de menor potência no motor. Entretanto, quando a potência de motor é maior, o modelo ideal coincide com o não-ideal.
In this analysis it was studied the dynamics of a simple pendulum excited by a crank-shaft-slider mechanism in the support ideally and non-ideally. In the ideal case, it was verified the result for an excitation by a crank-shaft-slider approaches to the result of the harmonically excited pendulum when the radius of the crank is sufficiently small in comparison with the length of the shaft. The resultant differential equation is solved numerically and the results of pendulum behavior are obtained by phase portraits, time histories and Poincaré sections. It is also calculated the Lyapunov exponents for the chaotic cases in analysis and a comparison is performed with bifurcation diagrams in the same regions. Basins of attractions are plotted for stable results like oscillatory and rotational solutions. In the results observed for the crank-shaft-slider excitation there are kinds of motion similar to those observed in the harmonic excitation: fixed points, oscillation, pure rotations, oscillation-rotations and chaos. However, in the principal resonance zone, chaotic results were more frequent when the radius of crank approaches the shaft length. A brief analysis is done concerning the same mechanism, but considering the excitation by limited power supply of a linear DC motor. In the sequence it is checked the feedback effect from the pendulum over the motor and comparison with the respective ideal excitation is accomplished where differences are commonly observed. With greater power the ideal model coincides with the nonideal model. In cases of lower power, the two models diverge in the results.

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Biječek, Tomáš. « Deformačně-napjatostní analýza ojnice spalovacího motoru pomocí MKP ». Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2008. http://www.nusl.cz/ntk/nusl-228164.

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In this diploma thesis is completed the FEM analysis of connecting rod in combustion engine Briggs & Stratton of the garden lawnmower. Within the frame of computing in the FEM system ANSYS Workbench is solved static structural strein and stress analysis, buckling analysis a fatigue also. The boundary conditions for FEM computing come out from the kinematic and dynamic analysis of the crank-slider mechanism in combustion engine. The 3-D models of the crank-slider mechanism are created in parametric SolidWorks modeller. Own construction variants of the connecting rod based on results of FEM analysis are also designed.

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CHEN, YIN-QUAN, et 陳盈全. « Shaking force balancing design of slider-crank mechanism ». Thesis, 1992. http://ndltd.ncl.edu.tw/handle/36275757208701209620.

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LEE, HSIN HU, et 李新護. « Application of Slider – Crank Mechanism in Lifting a Weight ». Thesis, 2016. http://ndltd.ncl.edu.tw/handle/40370419861161764109.

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碩士
國立雲林科技大學
機械工程系
104
Abstract In this study, the application of slider – crank mechanism in lifting a weight is discussed. During the mechanism design stage, the effects of significant factors on mechanical performance should be studied. By computer aided software and mechanism theory, the mechanical behaviors can be predicted in advance to improve the design accuracy. The position, velocity, and acceleration analysis of each link are performed to predict the mechanism behavior of the slider-crank system. Then the dynamical analysis is carried out to solve the reaction force and torque on each link. The required horse power of motor can be estimated by the driving force. The feasible procedures to design a mechanism system is proposed to solve several practical problems.

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邱勝琳. « Design of Nonlinear Controllers for A Montor-Slider-Crank Mechanism ». Thesis, 1997. http://ndltd.ncl.edu.tw/handle/01692059537589140202.

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碩士
中原大學
電機工程學系
85
The object of this thesis is to design nonlinear controllers for the slider-crank mechanism, which is driven by a permanent magnet (PM) synchronous servo motor. First, the dynamic equation of motion of the motor-slider-crank coupled system is derived by Hamilton's principle and Lagrange multiplier method. Then, an adaptive controller and a sliding mode controller are designed to enhance the robustness of the coupled system with regard to external load disturbance and plant parameter variations. Finally, numerical simulation and experimental results are presented to show that the proposed nonlinear controllers are suitable to apply in the motor-slider-crarik coupled system with good tracking performance.

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Pham, Thanh-Thuan, et 范成順. « Optimal Design and Manufacture of a Compliant Crank-Slider Mechanism ». Thesis, 2014. http://ndltd.ncl.edu.tw/handle/k62e75.

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碩士
國立高雄應用科技大學
機械與精密工程研究所
102
A compliant mechanism achieves its movement via the expansion of flexible segments or the distortion of one portion of the materials employed. However, repeating the deformation of materials in compliant mechanisms causes a serious problem that has not been considered in previous work. A number of viable configurations were investigated herein, based on the Finite Element Method to carry out the comparison of convergence stress on each model, in order to select one configuration. The comparison technique is then combined with optimization to obtain the configuration with improved performance. From this configuration, a prototype was generated and tested. The testing result showed that the compliant crank-slider mechanism indicated displacement, as well as characteristics similar to the model prediction. This thesis offers directions for further work by incorporating a compliant crank-slider mechanism into electrical contacts called constant-force electrical contacts.

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Feng, Chien-Sen, et 馮建森. « Dynamic Analysis and Control of a Spatial Slider-Crank Mechanism ». Thesis, 2003. http://ndltd.ncl.edu.tw/handle/52066847461711889313.

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碩士
國立高雄第一科技大學
機械與自動化工程所
91
The kinematic and dynamic formulations of a spatial slider-crank mechanism shall be redefined by simply geometric constraints in this study. The governing equations, formulated by the Hamilton principle and partitioning method, include effects of mass, external force, reducing gear box and motor electric input. In order to verify the perfection of geometric modeling, the simulated software-MSC. VisualNastran 4D is adopted in contrast with the numerical analysis of kinematics. Furthermore, the integral variable structure control (IVSC) is employed to execute the velocity and position controls. Numerical results show that the accuracy of kinematic analysis, and the good performance of IVSC robust against to the parameter variation and external disturbance.

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Chapitres de livres sur le sujet "Crank-slider mechanism"

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Khaled, Nassim. « Crank-Slider Mechanism of a Piston ». Dans Virtual Reality and Animation for MATLAB® and Simulink® Users, 35–48. London : Springer London, 2011. http://dx.doi.org/10.1007/978-1-4471-2330-9_5.

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Mundo, D., G. Gatti, G. Danieli et D. B. Dooner. « Kinematic analysis of an adjustable slider-crank mechanism ». Dans Computational Kinematics, 257–64. Berlin, Heidelberg : Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-01947-0_32.

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Li, Zhongyi, Shaoping Bai, Weihai Chen et Jianbin Zhang. « Unified Stiffness Modeling and Analysis of Compliant Crank-slider Mechanisms ». Dans Advances in Mechanism and Machine Science, 1315–24. Cham : Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-20131-9_129.

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Holub, Andrei, Liubov Klimina, Marat Dosaev et Yury Selyutskiy. « Modelling of Motion of the Slider-Crank Wind Car Taking into Account Viscous Friction in a Slider ». Dans Advances in Mechanism and Machine Science, 2059–66. Cham : Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-20131-9_204.

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Tang, Rengang, et Zhaoming Meng. « The Optimal Design for Offset Slider-Crank Mechanism in Aviation Machinery ». Dans Lecture Notes in Electrical Engineering, 141–47. Berlin, Heidelberg : Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-54233-6_15.

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Khaled, Nassim. « Animation of Crank-Slider Mechanism of a Piston Using Simulink® ». Dans Virtual Reality and Animation for MATLAB® and Simulink® Users, 123–39. London : Springer London, 2011. http://dx.doi.org/10.1007/978-1-4471-2330-9_10.

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van der Wijk, V., et J. L. Herder. « Dynamic Balancing of a Single Crank-Double Slider Mechanism with Symmetrically Moving Couplers ». Dans New Trends in Mechanism Science, 413–20. Dordrecht : Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-9689-0_48.

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Klein Breteler, A. J. « Motion Conversion with the Crank-Slider Mechanism Regarding Transfer Quality (Part 1) ». Dans Mechanisms, Transmissions and Applications, 101–8. Cham : Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-17067-1_11.

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Klein Breteler, A. J. « Motion Conversion with the Crank-Slider Mechanism Regarding Transfer Quality (Part 2) ». Dans Mechanisms, Transmissions and Applications, 109–14. Cham : Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-17067-1_12.

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Basumatary, S., J. Srinivas, Penta Akhil et Adhil Basheer. « Dynamic Analysis of Partially Compliant Planar Slider–Crank Mechanism with Joint Clearance ». Dans Lecture Notes in Mechanical Engineering, 257–66. Singapore : Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-8597-0_22.

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Actes de conférences sur le sujet "Crank-slider mechanism"

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Nagchaudhrui, Abhijit. « Mechatronic Redesign of Slider Crank Mechanism ». Dans ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-32482.

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Mechatronic design efforts have been and continue to be heavily investigated in the development of robotic manipulator arms. However, little effort has been devoted to mechatronic redesign of traditional two-dimensional mechanisms which mechanical engineers get exposure to when they study subjects such as kinematics and mechanism design. In this paper a feasibility study for controlling the motion of the popular slider crank mechanism with appropriate sensing and actuation is elaborated. The results indicate that a variety of motion profiles can be derived from the same mechanism without involving any mechanical redesign. Many of the control approaches that have been heavily investigated in the field of robotics are readily applicable to such mechanisms. The synergistic combination of mechanical design, soft computing, sensing, instrumentation, and control is likely to bring about unprecedented versatility and performance levels in the hardware realization of machines based on these mechanisms.

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Shiva, Kumar M. R., K. N. V. K. Manoj, Hrtwik Anand, Maddula Jnanadev, K. S. P. Sandeep et Anjan Kumar Dash. « Innovative Application of Slider-Crank Mechanism ». Dans 2018 International Conference on Computation of Power, Energy, Information and Communication(ICCPEIC). IEEE, 2018. http://dx.doi.org/10.1109/iccpeic.2018.8525174.

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Komaita, Yohei, et Katsuhisa Furuta. « Energy control of slider-crank mechanism ». Dans SICE 2008 - 47th Annual Conference of the Society of Instrument and Control Engineers of Japan. IEEE, 2008. http://dx.doi.org/10.1109/sice.2008.4655066.

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Yong H., Chung, Ahn Eui K., Hwam Won K. et Choi Jung J. « Kinetics Modeling for Slider-Crank Mechanism ». Dans Third International Conference on Control, Automation and Systems Engineering (CASE-13). Paris, France : Atlantis Press, 2013. http://dx.doi.org/10.2991/case-13.2013.12.

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Frischknecht, Bart D., Larry L. Howell et Spencer P. Magleby. « Crank-Slider With Spring Constant Force Mechanism ». Dans ASME 2004 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/detc2004-57318.

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This paper explores the development and performance of new constant-force compliant mechanisms that involve the addition of a translational spring element to slider-crank constant force mechanisms. The translational spring element has the additional requirement that, similar to a slider, it resists off-axis loads sufficiently to permit translation along only one axis. Geometric and energy storage parameters have been determined by optimization for five classes of mechanisms. The results of the optimization are values for geometric and energy storage parameters for each mechanism class for various levels of the translational spring parameter and various levels of constant-force behavior. The new configurations experience decreasing performance with increasing translational spring stiffness. The potential to implement a translational spring that also acts as a slider link provides the motivation for the new configurations. Such a spring would have the potential to completely remove friction from the mechanism and provide a constant-force solution that could replace current solutions such as hydraulic or pneumatic devices. The new configurations also have the potential to be manufactured as one piece or in layers, opening up new arenas for compressive constant-force mechanisms. Prototyping and testing of one of the new configurations are included as an example to demonstrate the use of the behavioral model.

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Fischer, Ian S., et Sahidur Rahman. « Kinematics of the Generalized Slider-Crank Mechanism ». Dans ASME 1993 Design Technical Conferences. American Society of Mechanical Engineers, 1993. http://dx.doi.org/10.1115/detc1993-0320.

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Abstract Dual-number techniques are used to analyze the kinematics and dynamics of the slider crank mechanism generalized to consider the effects of the cylinder axis being offset and non-perpendicular to the crankshaft axis, conditions which result in reciprocating machinery such as engines and compressors from manufacturing tolerances. The kinematics of the mechanism are evaluated with a Newton-Raphson method using dual-number coordinate-transformation matrices which in this work is extended to include mechanisms with spherical joints. Results for various cases are shown and are ready to be used in a study of the dynamics of the generalized slider-crank.

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Fischer, Ian S., et Sahidur Rahman. « Dynamics of the Generalized Slider-Crank Mechanism ». Dans ASME 1993 Design Technical Conferences. American Society of Mechanical Engineers, 1993. http://dx.doi.org/10.1115/detc1993-0321.

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Abstract Dual-number techniques are used to analyze the dynamics of the slider crank mechanism generalized to consider the effects of the cylinder axis being offset and non-perpendicular to the crankshaft axis, conditions which result in reciprocating machinery such as engines and compressors from manufacturing tolerances. Results for various cases are shown and the implications for the design engineer are discussed.

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ElBahloul, Mostafa A., ELsayed S. Aziz et Constantin Chassapis. « Hypocycloid Gear Mechanism Versus Slider-Crank Mechanism in Engines ». Dans ASME 2019 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/detc2019-97802.

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Abstract This effort investigates the feasibility of using the Hypocycloid Gear Mechanism (HGM) as an alternative to the conventional slider-crank mechanism for Internal Combustion Engine (ICE) applications. Engines incorporating the conventional slider-crank mechanism are subjected to high frictional power losses mainly due to the piston-rod assembly and the associated complex motion of the connecting rod. The unique HGM engine provides the means for the piston-rod assembly to reciprocate in a straight-line motion along the cylinder axis, thus eliminating the piston side-thrusting into the cylinder wall. To analyze the performance advantages of the HGM engine, a Matlab/Simulink model is developed for the simulation of a single-cylinder HGM engine from the throttle to the crankshaft output. The model integrates several sub-models for combustion, gas flow, heat transfer, and friction power loss of the internal gear train meshes, rolling bearings, and sliding bearings. The design of the planetary crank gearing system to satisfy the design specifications of ICE, has been derived using standard design procedures provided by AGMA. Calculated efficiency and power diagrams are plotted and compared with the performance of conventional engines in the literature. The results show that the HGM can satisfy modern ICE design requirements, achieve better engine performance characteristics, and minimize the frictional power losses. The HGM engine achieved lower frictional power losses by an average 33% of the conventional engine losses while its mechanical efficiency is enhanced by up to +24% with respect to the conventional engine.

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Chen, Hsin-Pao, Der-Min Tsay et Cecil O. Huey. « Synthesis and Analysis of Slider-Crank Mechanism Motions ». Dans ASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/detc2010-29151.

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Slider-crank mechanisms used in open/close motion from toggle positions can be driven at the crank by many devices. Usually, the slider motion is defined first to synthesize crank motion. When slider motion has acceleration continuity only, crank acceleration is discontinuous causing shock loading at high speeds. To avoid such behavior, motion constraints must be assigned up to ping continuity at the limiting positions. This paper presents kinematic motion equations of slider-crank mechanisms with input from both the slider and crank. Toggle and limiting positions having required transmission angles at varied link ratios are determined. Motion functions that yield continuous crank acceleration are demonstrated.

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SAITOH, Masaru, et Katsuhisa FURUTA. « Generalized minimum variance control of slider-crank mechanism ». Dans SICE Annual Conference 2007. IEEE, 2007. http://dx.doi.org/10.1109/sice.2007.4421354.

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