On the design of a novel fully compliant spherical four-bar mechanism

Download

11.pdf

Date

2019-9

Author

Parlaktaş, Volkan
Tanık, Engin
Tanık, Çağıl Merve

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

173
views

117
downloads

In this article, a novel fully compliant spherical four-bar mechanism is introduced and its generalized design methodology is proposed. The original fully compliant mechanism lies on a plane at the free position (undeflected position); therefore, it has the advantages of ease of manufacturing, minimized parts, and no backlash. First, the mobility conditions of the mechanism are obtained. The dimensions of the mechanism are optimally calculated for maximum output rotation, while keeping the deflection of flexural hinges at an acceptable range. Using an optimization method, design tables are prepared to display the relationship between arc lengths and corresponding deflections of flexural hinges. Input–output torque relationship and stresses at compliant segments are obtained analytically. A mechanism dimensioned by this novel design method is analyzed by a finite element analysis method, and the analytical results are verified. Finally, the mechanism is manufactured and it is ensured that the deflections of the compliant segments are consistent with the theoretical results.

Subject Keywords

Mechanical Engineering, Compliant mechanism, Spherical four-bar mechanism, Flexural hinge, No backlash, Optimum design

URI

https://hdl.handle.net/11511/51642

Journal

Advances in Mechanical Engineering

DOI

https://doi.org/10.1177/1687814019879548

Collections

Department of Mechanical Engineering, Article

Suggestions

OpenMETU
Core

on the analysis and design of a new type of partially compliant mechanism Tanık, Engin; Söylemez, Eres; Department of Mechanical Engineering (2007) In this study analysis and design procedures of partially compliant mechanisms using two degree of freedom mechanism model are developed. The flexible segments are modeled as revolute joints with torsional springs. While one freedom is controlled by the input to the mechanism, the motion of the parts are governed both by the kinematics and the force balance. The procedure developed for the analysis of such mechanisms is shown on two different mechanisms: a five link mechanism with crank input and slider out...
On the Design and Implementation of Higher Order Differential Microphones De Sena, Enzo; Hacıhabiboğlu, Hüseyin; Cvetkovic, Zoran (2012-01-01) A novel systematic approach to the design of directivity patterns of higher order differential microphones is proposed. The directivity patterns are obtained by optimizing a cost function which is a convex combination of a front-back energy ratio and uniformity within a frontal sector of interest. Most of the standard directivity patterns-omnidirectional, cardioid, subcardioid, hypercardioid, supercardioid-are particular solutions of this optimization problem with specific values of two free parameters: the...
On the Poisson sum formula for the analysis of wave radiation and scattering from large finite arrays Aydın Çivi, Hatice Özlem; Chou, HT (1999-05-01) Poisson sum formulas have been previously presented and utilized in the literature [1]-[8] for converting a finite element-by-element array field summation into an alternative representation that exhibits improved convergence properties with a view toward more efficiently analyzing wave radiation/scattering from electrically large finite periodic arrays. However, different authors [1]-[6] appear to use two different versions of the Poisson sum formula; one of these explicitly shows the end-point discontinui...
Optimization of Power Conversion Efficiency in Threshold Self-Compensated UHF Rectifiers With Charge Conservation Principle Gharehbaghi, Kaveh; KOÇER, FATİH; Külah, Haluk (2017-09-01) This paper presents a compact model for threshold self-compensated rectifiers that can be used to optimize circuit parameters early in the design phase instead of time-consuming transient simulations. A design procedure is presented for finding the optimum aspect ratio of transistors used in the converter and number of rectifying stages to achieve the maximum power conversion efficiency. In the presented analysis, the relation between the power conversion efficiency and the load current over the variation o...
On Improving Dynamic State Space Approaches to Articulatory Inversion With MAP-Based Parameter Estimation Özbek Arslan, Işıl; Hasegawa-Johnson, Mark; Demirekler, Mübeccel (Institute of Electrical and Electronics Engineers (IEEE), 2012-01-01) This paper presents a complete framework for articulatory inversion based on jump Markov linear systems (JMLS). In the model, the acoustic measurements and the position of each articulator are considered as observable measurement and continuous-valued hidden state of the system, respectively, and discrete regimes of the system are represented by the use of a discrete-valued hidden modal state. Articulatory inversion based on JMLS involves learning the model parameter set of the system and making inference a...

Citation Formats

V. Parlaktaş, E. Tanık, and Ç. M. Tanık, “On the design of a novel fully compliant spherical four-bar mechanism,” Advances in Mechanical Engineering, 2019, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/51642.