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Machines
Special Issues
Optimization and Design of Compliant Mechanisms
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Optimization and Design of Compliant Mechanisms

A special issue of Machines (ISSN 2075-1702). This special issue belongs to the section "Robotics, Mechatronics and Intelligent Machines".

Deadline for manuscript submissions: 15 November 2024 | Viewed by 1914

Special Issue Editors

Dr. Bingxiao Ding

E-Mail Website
Guest Editor
Department of Mechanical Design, Manufacturing and Automation, Jishou University, Xiangxi 416000, China
Interests: robotics; micro-positioning; smart actuators; nonlinear system control
Prof. Dr. Jinqing Zhan

E-Mail Website
Guest Editor
School of Mechatronics and Vehicle Engineering, East China Jiaotong University, Nanchang 33013, China
Interests: compliant mechanisms; micromanipulators; precision positioning; topology optimization; finite element analysis
Dr. Nguyen Vu Linh

E-Mail Website
Guest Editor
College of Engineering and Computer Science, VinUniversity, Hanoi, Vietnam
Interests: mechanism and machine design; robotic machining; robot design; kinematics and statics analysis; multibody dynamic systems; physical human-robot interaction; reliability-based design optimization

Special Issue Information

Dear Colleagues,

Compliant mechanisms are rationally designed structures of precision geometrical shape, leading to ultra-precision motion and special force displacement chracteristics. Unlike conventional rigid-link mechanisms, the motion of compliant mechanisms is realized via using flexible elements whereby deformation requires no lubrication while achieving high movement accuracy without friction. As compliant mechanisms differ significantly from traditional rigid mechanisms, the recent research focus has been on investigating various technologies and approaches to address challenges in their design and synthesis, optimization, analysis, materials, fabrication methods, and actuation. Applications of these structures include micro manipulation, precision manufacturing, vibration isolation, medical robots, and so on. The focus of this Special Issue is the design, optimization, control, and applications of compliant mechanisms.

Dr. Bingxiao Ding
Prof. Dr. Jinqing Zhan
Dr. Nguyen Vu Linh
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Machines is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • compliant mechanism
  • constant force mechanism
  • optimization
  • micro-positioner
  • robotics

Published Papers (2 papers)

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Research

11 pages, 42274 KiB  
Article
Ultra-Compact Orthoplanar Spring via Euler-Spiral Flexures
by Jacob Sutton, Collin Ynchausti, Kyle Dahl, Spencer P. Magleby, Larry L. Howell and Brian D. Jensen
Machines 2024, 12(4), 273; https://doi.org/10.3390/machines12040273 - 18 Apr 2024
Viewed by 532
Abstract
Orthoplanar springs are single-component compliant mechanisms that can be fabricated from sheet material and undergo deflection orthogonal to the plane of the mechanism. They are useful in applications where spatial constraints are significant. An Euler spiral is a curve whose curvature is linearly [...] Read more.
Orthoplanar springs are single-component compliant mechanisms that can be fabricated from sheet material and undergo deflection orthogonal to the plane of the mechanism. They are useful in applications where spatial constraints are significant. An Euler spiral is a curve whose curvature is linearly proportional to the arc length allowing for the curve to assume a flat position under a load. In this work, orthoplanar spring and Euler-spiral concepts are synthesized to create a single-component spring mechanism that lies flat under a load. Where traditional planar springs under a load will take on an out-of-plane contour, the Euler-spiral orthoplanar spring lies completely flat under a load. The relationship between the load needed to flatten the orthoplanar Euler-spiral spring and its physical geometry is examined. A use case where the Euler-spiral orthoplanar spring is utilized as a deployment mechanism for a mid-flight emerging antenna on the surface of a flight body is presented. Full article
(This article belongs to the Special Issue Optimization and Design of Compliant Mechanisms)
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21 pages, 2921 KiB  
Article
Topology Optimization of Geometrically Nonlinear Structures Based on a Self-Adaptive Material Interpolation Scheme
by Junwen Liang, Xianmin Zhang, Benliang Zhu, Rixin Wang, Chaoyu Cui and Hongchuan Zhang
Machines 2023, 11(12), 1047; https://doi.org/10.3390/machines11121047 - 24 Nov 2023
Viewed by 966
Abstract
In this paper, a simple and effective self-adaptive material interpolation scheme is proposed to solve the numerical instability problem, which may occur in topology optimization considering geometrical nonlinearity when using density-based method. The primary concept of the proposed method revolves around enhancing the [...] Read more.
In this paper, a simple and effective self-adaptive material interpolation scheme is proposed to solve the numerical instability problem, which may occur in topology optimization considering geometrical nonlinearity when using density-based method. The primary concept of the proposed method revolves around enhancing the deformation resistance of minimum-density or intermediatedensity elements, thus avoiding numerical instability due to excessive distortion of these elements. The proposed self-adaptive material interpolation scheme is based on the power law method, and the stiffness of minimum-density or intermediate-density elements can be adjusted by a single parameter, α. During the optimization process, the parameter α will be changed according to an adaptive adjustment strategy to ensure that elements within the design domain are not excessively distorted, while the mechanical behavior of the structure can be approximated with acceptable accuracy. Numerical examples of minimizing compliance and maximizing displacement of structure are given to prove the validity of the proposed self-adaptive material interpolation scheme. Full article
(This article belongs to the Special Issue Optimization and Design of Compliant Mechanisms)
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