Dynamic Analysis of the Crank Mechanism through the Numerical Solution

Minárik, M.; Bodnár, F.

doi:10.21062/ujep/410.2019/a/1213-2489/mt/19/6/1003

Cited by 3 publications

(2 citation statements)

References 4 publications

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“…More generally, for any kind of mechanism in machinery driving chains, a reliable prediction of the dynamic behavior working through parameters like speed, acceleration, force distributions, loss coefficient, dynamic coefficient, or motion transmission function is essential in machine design. Dynamic models, analyses, and research approaches are known regarding various kinds of mechanisms, starting from a crank piston mechanism [2] or an oscillatory slider mechanism [3] up to classical distribution mechanisms [4], and ending with bionic robotic structural mechanisms [5] or complex gear transmissions [6].…”

Section: Introductionmentioning

confidence: 99%

Analytical, Numerical and Experimental Analysis of a Positive Displacement Cam Mechanism—A Case Study

Merticaru

Nagîţ

et al. 2023

Machines

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Cam mechanisms, covering a large structural variety, are widely used in machinery, mainly as components of automated systems. Their functioning behavior is affected by negative dynamic phenomena determined by specific high velocities and acceleration rates. Within the various types of research on the dynamic behavior of cam mechanisms, this study addresses the need to clarify the influence of geometrical parameters and technological conditions on some indicators of the jump phenomenon in contact loss for a cam-follower mechanism. This particularly developed case study referred to a mechanism with a profiled grooved disk cam and oscillating follower. To highlight the influence of the cam-follower contact elasticity on the jump phenomenon, two dynamic models were developed: one considering rigid elements in contact and the second considering elastic cam-follower contact. The models were tested within a virtually simulated experiment, and the numerical simulation results evidenced the influence of input factors like the applied load on the mechanism, the clearance in the cam-follower kinematic pair, and the rotational speed of the cam, and the inertia moment was reduced to the follower on some indicators of the jump phenomenon. Validation FEA and experiments were performed, proving the reliable appropriateness of the dynamic model based on elastic cam-follower contact.

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Section: Introductionmentioning

confidence: 99%

Analytical, Numerical and Experimental Analysis of a Positive Displacement Cam Mechanism—A Case Study

Merticaru

Nagîţ

et al. 2023

Machines

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“…In separate research, dynamic analysis of the crank mechanism is designed, and a connecting rod is modelled with three different manners. In the first case, the connecting rod is modelled as a rigid body; in the second case, it is modelled with two mass points, and in the third case, the rod is modelled with three mass points [19].…”

Section: Introductionmentioning

confidence: 99%

A New Coupler Critical Dimensions (CCD) Method for Linkage Mechanisms Mobility Analysis

Ali¹,

Mir‐Nasiri

Namazov³

et al. 2021

Manufacturing Technology

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A new Coupler Critical Dimensions (CCD) approach to define mobility criteria (crank, rocker conditions, or existence) for linkage mechanisms has been presented in this paper. The concept is critical to design and analyze the extreme lengths of a mechanism coupler link when the mechanism is at the extreme of its existence or changing its mobility condition. The method leads a set of expressions of the constant mechanism parameters that can define the mechanism's coupler link's exact dimensional limits. These expressions present sufficient and necessary dimensional conditions for the mechanism's existence and become a turning point to change mobility from a crank to a rocker and vice versa. The mechanism reaches its changepoint configuration at the boundaries of the coupler dimensions. The mechanism may switch from one work function to another or from existence to non-existence. The method has been successfully applied to the planar 4R, spatial RSSR, and planar multiloop linkage mechanisms. The obtained results prove the effectiveness and accuracy of the method in defining the limits of the mechanism rotatability conditions or existence in general. The crank condition is essential to couple it with the motor or engine. If the mechanism input link is not a crank (i.e., it has a possibility of full rotation), the motor may crash the entire mechanism. Rotatabilty of the input link is a fundamental concept in machines and mechanisms.

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Kinematic Parameters of the Biplanetary Mechanism (Intermittent Mixing Machines)

Nematov,

Berdiev,

Wang

2023

Manufacturing Technology

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The subject of research is the kinematic parameters of a biplanetary mechanism of the intermitted mixing machines. The article substantiates analytical expressions for determining the kinematic parameters of the drives of the working body of the intermitted mixing machines with planetary ones with double satellites and biplanetary mechanisms; the laws of change of displacements, velocities and accelerations of the points of the working body for drives with planetary one with double satellites and biplanetary mechanisms are determined; the regularities of the influence of the velocity parameters of the driving links on the kinematic characteristics of these mechanisms are established.

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Dynamic Analysis of the Crank Mechanism through the Numerical Solution

Cited by 3 publications

References 4 publications

Analytical, Numerical and Experimental Analysis of a Positive Displacement Cam Mechanism—A Case Study

Analytical, Numerical and Experimental Analysis of a Positive Displacement Cam Mechanism—A Case Study

A New Coupler Critical Dimensions (CCD) Method for Linkage Mechanisms Mobility Analysis

Kinematic Parameters of the Biplanetary Mechanism (Intermittent Mixing Machines)

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