On the analysis and design of a novel fully compliant slider-crank mechanism

Date

2020

Author

Tanık, Çağıl Merve

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In the literature, authors have made contributions in the area of partially compliant slider-crank mechanisms those possess rigid joints that may cause backlash inherently. On contrary, fully compliant mechanisms offer no backlash which is a valuable property for the cases where high preciseness is required. In this paper, we proposed an original “fully” compliant slider-crank mechanism design. To the best of our knowledge, this is the first study in the literature on a compliant slider-crank mechanism without a rigid prismatic joint. An analysis and design procedure for this mechanism is proposed. Kinematic performance of the mechanism is investigated analytically. Dimensions of the mechanism are optimized to obtain maximum translational output, while keeping deflections of the flexible hinges equal to each other and as small as possible. A design table displaying relationships between output stroke, axis drift of the output segment in unitless form, and critical stresses at the compliant segments are presented. As an example, a compliant mechanism is designed by using rigid body replacement technique. Then, by using nonlinear finite element analysis technique, analytical results are verified. Finally, a real model is built to compare output stroke and axis drift with the derived analytical approaches. The results of experiments verified that the proposed theoretical approaches are consistent.

Subject Keywords

Mechanical movements., Fully Compliant Mechanisms, Slider-Crank Mechanisms, No Backlash, Straight Line Motion Generation

URI

http://etd.lib.metu.edu.tr/upload/12625323/index.pdf
https://hdl.handle.net/11511/45330

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Graduate School of Natural and Applied Sciences, Thesis