Combining cross-pivot flexures to generate improved kinematically equivalent flexure systems

Panas, Robert M.; Sun, Frederick; Bekker, Logan; Hopkins, Jonathan B.

doi:10.1016/j.precisioneng.2021.05.001

Combining cross-pivot flexures to generate improved kinematically equivalent flexure systems

Journal Article · Mon May 10 00:00:00 EDT 2021 · Precision Engineering

DOI:https://doi.org/10.1016/j.precisioneng.2021.05.001· OSTI ID:1811233

^[1]; Sun, Frederick ^[1]; Bekker, Logan ^[1]; Hopkins, Jonathan B. ^[2]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Univ. of California, Los Angeles, CA (United States)

In this work, we show that new kinematic equivalents with improved performance of standard flexure elements can be systematically synthesized by combination of cross-pivot flexures. Cross-pivot flexures provide a unique feature of kinematic stability under both high loading and large displacement conditions which can be exploited to synthesize a range of kinematic equivalents to standard flexure elements which retain much greater stiffness, load capacity and range capacity than the traditional elements. Cross-pivot synthetic elements provide a means to expand the performance of a large range of flexure-based structures including motion stages, manufacturing equipment and optical systems. This could result in better data collection, smaller systems, and less distortion in operation.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: US Air Force Office of Scientific Research (AFOSR); USDOE; USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1811233

Alternate ID(s):: OSTI ID: 1822453

Report Number(s):: LLNL-JRNL--817077; 1025105

Journal Information:: Precision Engineering, Journal Name: Precision Engineering Vol. 72; ISSN 0141-6359

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Combining cross-pivot flexures to generate improved kinematically equivalent flexure systems

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