Optimum design and analysis of a novel planar eight-bar linkage mechanism

Halicioglu, Recep; Jomartov, Assylbek; Kuatova, Moldir

doi:10.1080/15397734.2021.1995410

Cited by 8 publications

(7 citation statements)

References 35 publications

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“…The following dimensions were used for this mechanism: x F = 100 mm, GH = 79 mm, GP = 36 mm, 25) to (28) are useful for the calculus of Cartesian coordinates of H and P points.…”

Section: Elliptical Direct Curvementioning

confidence: 99%

“…Kinematic (e.g., [20] and [21]), kinetostatic (e.g., [22]) and dynamic analysis (e.g., [23] and [24]), synthesis studies (e.g., [20] and [25]) and different optimization types and techniques (e.g., [26] to [28]) were carried out for the inversor mechanisms. For example, a numerical method based on the meansquare minimization of the objective function [29] can be used for the kinematic synthesis of the Stephenson mechanism.…”

Section: Introductionmentioning

confidence: 99%

“…For example, a numerical method based on the meansquare minimization of the objective function [29] can be used for the kinematic synthesis of the Stephenson mechanism. Other modern methods can also be used to optimize these planar mechanisms (e.g., the genetic algorithm, approached in [28]).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Inverse Curves - Research on Two Quondam Inversor Mechanisms

Duță¹,

Popescu²,

Geonea³

et al. 2023

sv-jme

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The field of research considered in this work is that of mechanisms generating inverse curves. We were motivated to approach this field, proposing variants of mechanisms based on Artobolevsky’s inversor, in blocking conditions, due to the lack of recent applications related to inversor mechanisms that draw curves other than straight lines. Based on Crawford’s inversor, Artobolevsky’s inversor is structurally and kinematically analysed in what follows. Hence, we carried out the kinematic analysis and simulation of four inversor mechanisms derived from Artobolevsky’s inversor, which draw different initial curves (a circle, a straight line, an ellipse and an Archimedes’ spiral) were performed. Inverse curves were generated under limited operating conditions due to geometrical dimensions and kinematic parameters. Given the researchers’ increasing interest in the development of applications related to inversor mechanisms (in fields such as: robotics, machine tools, visual arts and symbolic languages), as well as expanding databases of planar and spatial mechanisms, it is suggested that there is a need to create new mechanisms similar to those studied in this paper and to analyse their mode of operation.

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“…The following dimensions were used for this mechanism: x F = 100 mm, GH = 79 mm, GP = 36 mm, 25) to (28) are useful for the calculus of Cartesian coordinates of H and P points.…”

Section: Elliptical Direct Curvementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Inverse Curves - Research on Two Quondam Inversor Mechanisms

Duță¹,

Popescu²,

Geonea³

et al. 2023

sv-jme

View full text Add to dashboard Cite

show abstract

“…The summed error between the desired and generated trajectories was significantly lower with TLBO compared to BWP. Additionally, swarm-based optimization algorithm [ 22 ], genetic algorithm (GA) [ [23] , [24] , [25] ], cuckoo search algorithm [ 26 ], and virus optimization algorithm [ 27 ] were also applied in the design of single DOF mechanisms.…”

Section: Introductionmentioning

confidence: 99%

Computer aided design of a single degree-of-freedom six-bar mechanism via Monte Carlo layered optimization method

Zhang,

Zhang

2024

Heliyon

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“…It is worth noting that the correct choice of regularization parameters and kernel bandwidth parameters is the key to LSSVM. These two parameters can be optimized using the genetic algorithm 35 and fuzzy algorithm. Some deficiencies are still present in previous assembly tightness detection studies.…”

Section: Introductionmentioning

confidence: 99%

An assembly tightness recognition method for bolted connection states with singular-value entropy and GA least-squares support vector machine

Zhang

Sun

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part B:

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The bolted connections are widely used in high-end equipment such as aerospace and energy fields. However, when the equipment is assembled, the assembly tightness of bolted connection structure is easily affected by friction and manual experience, resulting in inconsistent preload. It will affect the dynamic performance of equipment, resulting in abnormal vibration or failure of equipment. Currently, the existing assembly tightness testing methods mainly focus on whether the bolts are loose, ignoring the impact of assembly tightness on the vibration of the whole machine. This paper proposes an assembly tightness recognition method for bolted connection states based on modified ensemble empirical mode decomposition (MEEMD) and genetic algorithm least squares support vector machine (GALSSVM). Firstly, an ultrasonic pre-tightening force test system is used for multi-bolt pre-tightening force calibration and precise control, and subsequently, accurate vibration signal samples are collected. The feature extraction of multi-bolt connection states is carried out based on MEEMD. Secondly, a quantitative evaluation index of assembly tightness, singular-value entropy, is proposed. Finally, experimental verification is performed. Multiple sets of different preloads case experiments are designed to verify the identification accuracy of the proposed algorithm. The results show that with the bolted connection structure from loose to tight, the singular-value entropy of the quantitative index decreases monotonically. It provides some theoretical references for improving the reliability of high-end equipment and the evaluation of assembly performance.

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Optimum design and analysis of a novel planar eight-bar linkage mechanism

Cited by 8 publications

References 35 publications

Inverse Curves - Research on Two Quondam Inversor Mechanisms

Inverse Curves - Research on Two Quondam Inversor Mechanisms

Computer aided design of a single degree-of-freedom six-bar mechanism via Monte Carlo layered optimization method

An assembly tightness recognition method for bolted connection states with singular-value entropy and GA least-squares support vector machine

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