Optimal Synthesis of Planar Linkages

Tuleshov, Amandyk; Jomartov, Assylbek; Ibrayev, Sayat; Jamalov, Nutpulla; Halicioglu, Recep

doi:10.32014/2020.2518-170x.21

Cited by 2 publications

(2 citation statements)

References 19 publications

(23 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Another method for kinematic synthesis with path generation for a six-bar linkage Stephenson III was referred to in reference [70] without any type of constraints. Finally, there are general purpose synthesis methods for planar linkages as reference [71] where no constraint applies; or reference [72], due to the authors, which is the only one using geometric constraints of fixed length.…”

Section: Scope and Contribution Of This Studymentioning

confidence: 99%

Optimum dimensional synthesis of planar mechanisms with geometric constraints

et al. 2020

View full text Add to dashboard Cite

The deformed energy method has shown to be a good option for dimensional synthesis of mechanisms. In this paper the introduction of some new features to such approach is proposed. First, constraints fixing dimensions of certain links are introduced in the error function of the synthesis problem. Second, requirements on distances between determinate nodes are included in the error function for the analysis of the deformed position problem. Both the overall synthesis error function and the inner analysis error function are optimized using a Sequential Quadratic Problem (SQP) approach. This also reduces the probability of branch or circuit defects. In the case of the inner function analytical derivatives are used, while in the synthesis optimization approximate derivatives have been introduced. Furthermore, constraints are analyzed under two formulations, the Euclidean distance and an alternative approach that uses the previous raised to the power of two. The latter approach is often used in kinematics, and simplifies the computation of derivatives. Some examples are provided to show the convergence order of the error function and the fulfilment of the constraints in both formulations studied under different topological situations or achieved energy levels.

show abstract

Section: Scope and Contribution Of This Studymentioning

confidence: 99%

Optimum dimensional synthesis of planar mechanisms with geometric constraints

et al. 2020

View full text Add to dashboard Cite

show abstract

“…In order to find the initial approximations, a method based on the use of Burmester points was proposed [18]. Reference [19] presents a newly developed hybrid simulated annealing-direct search algorithm (SADS) for the optimization of mechanism synthesis.…”

Section: Introductionmentioning

confidence: 99%

Decomposition analysis and peak stagger design for Crank-triangular linkage-elbow mechanism of mechanical servo presses

Sun

Liang-mo

et al. 2021

Mechanics & Industry

View full text Add to dashboard Cite

High mechanical advantage as well as low and steady slide speed within the working stroke Sn are the fundamental requirements for the working mechanism of servo-mechanical press. Currently, the Crank-Triangular Linkage-Elbow (CTLE) mechanism has attracted more and more attention from researchers and manufacturers of servo presses. This paper presents a new analysis and design method of CTLE. The mechanism is decomposed into two sub-units: crank and triangular-linkage elbow, followed by the kinematic and force analysis of each sub-unit. The influences of each structural parameter on the working performance are obtained and can be used as the basis for preliminary design. Through the offset design, the mechanical advantage peaks of the two units, MA1max and MA2max, do not occur at the same time: MA1max is located near Sn, while MA2max is just at BDC (Bottom Dead Center). Because the mechanical advantage of the whole mechanism is the product of the two subunits, the designed mechanism can obtain high and steady mechanical advantage together with low and steady slide speed within Sn. After preliminary design, the scheme can be further modified by numerical simulation and optimization. Hence the design efficiency can be improved.

show abstract

Optimal Synthesis of Planar Linkages

Cited by 2 publications

References 19 publications

Optimum dimensional synthesis of planar mechanisms with geometric constraints

Optimum dimensional synthesis of planar mechanisms with geometric constraints

Decomposition analysis and peak stagger design for Crank-triangular linkage-elbow mechanism of mechanical servo presses

Contact Info

Product

Resources

About