A Multi-Layer Parallelogram Flexure Architecture for Higher Out-of-Plane Load Bearing StiffnessSource: Journal of Mechanical Design:;2025:;volume( 147 ):;issue: 007::page 73302-1DOI: 10.1115/1.4067452Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Parallelogram flexure mechanism (PFM) is a common flexure module that is widely used as a building block in the design and manufacturing of flexure-based XY motion stages that provide in-plane degrees-of-freedom (DoFs). In such motion stages, low in-plane stiffness along the DoF helps increase the DoF range of motion and reduce the actuation effort. At the same time, high out-of-plane stiffness is paramount to suppress out-of-plane parasitic motions, support heavy payloads, and mitigate the negative impacts of out-of-plane resonant modes. Achieving both of these design objectives simultaneously is extremely challenging in PFMs and flexure mechanisms comprising PFMs due to the inherent tradeoff between the in-plane and out-of-plane stiffnesses. This paper resolves this tradeoff by proposing a novel multi-layer PFM architecture, referred to as the sandwich PFM, that achieves significant improvements in the out-of-plane translational and rotational stiffnesses compared to conventional single-layer PFMs without impacting the in-plane DoF stiffness. Analytical models will be derived for the in-plane and out-of-plane stiffnesses of the sandwich PFM, which closely match the Finite Element Analysis (FEA) results. Several design insights into the performance of the sandwich PFM are discussed using the analytical stiffness models, and a general procedure is proposed to design a sandwich PFM.
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contributor author | Radgolchin, Moeen | |
contributor author | Rath, Siddharth | |
contributor author | Awtar, Shorya | |
date accessioned | 2025-04-21T10:39:04Z | |
date available | 2025-04-21T10:39:04Z | |
date copyright | 1/16/2025 12:00:00 AM | |
date issued | 2025 | |
identifier issn | 1050-0472 | |
identifier other | md_147_7_073302.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4306623 | |
description abstract | Parallelogram flexure mechanism (PFM) is a common flexure module that is widely used as a building block in the design and manufacturing of flexure-based XY motion stages that provide in-plane degrees-of-freedom (DoFs). In such motion stages, low in-plane stiffness along the DoF helps increase the DoF range of motion and reduce the actuation effort. At the same time, high out-of-plane stiffness is paramount to suppress out-of-plane parasitic motions, support heavy payloads, and mitigate the negative impacts of out-of-plane resonant modes. Achieving both of these design objectives simultaneously is extremely challenging in PFMs and flexure mechanisms comprising PFMs due to the inherent tradeoff between the in-plane and out-of-plane stiffnesses. This paper resolves this tradeoff by proposing a novel multi-layer PFM architecture, referred to as the sandwich PFM, that achieves significant improvements in the out-of-plane translational and rotational stiffnesses compared to conventional single-layer PFMs without impacting the in-plane DoF stiffness. Analytical models will be derived for the in-plane and out-of-plane stiffnesses of the sandwich PFM, which closely match the Finite Element Analysis (FEA) results. Several design insights into the performance of the sandwich PFM are discussed using the analytical stiffness models, and a general procedure is proposed to design a sandwich PFM. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | A Multi-Layer Parallelogram Flexure Architecture for Higher Out-of-Plane Load Bearing Stiffness | |
type | Journal Paper | |
journal volume | 147 | |
journal issue | 7 | |
journal title | Journal of Mechanical Design | |
identifier doi | 10.1115/1.4067452 | |
journal fristpage | 73302-1 | |
journal lastpage | 73302-12 | |
page | 12 | |
tree | Journal of Mechanical Design:;2025:;volume( 147 ):;issue: 007 | |
contenttype | Fulltext |