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Title: Buckling analysis of planar compression micro-springs

Abstract

Large compression deformation causes micro-springs buckling and loss of load capacity. We analyzed the impact of structural parameters and boundary conditions for planar micro-springs, and obtained the change rules for the two factors that affect buckling. A formula for critical buckling deformation of micro-springs under compressive load was derived based on elastic thin plate theory. Results from this formula were compared with finite element analysis results but these did not always correlate. Therefore, finite element analysis is necessary for micro-spring buckling analysis. We studied the variation of micro-spring critical buckling deformation caused by four structural parameters using ANSYS software under two constraint conditions. The simulation results show that when an x-direction constraint is added, the critical buckling deformation increases by 32.3-297.9%. The critical buckling deformation decreases with increase in micro-spring arc radius or section width and increases with increase in micro-spring thickness or straight beam width. We conducted experiments to confirm the simulation results, and the experimental and simulation trends were found to agree. Buckling analysis of the micro-spring establishes a theoretical foundation for optimizing micro-spring structural parameters and constraint conditions to maximize the critical buckling load.

Authors:
; ;  [1]
  1. School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081 (China)
Publication Date:
OSTI Identifier:
22488521
Resource Type:
Journal Article
Journal Name:
AIP Advances
Additional Journal Information:
Journal Volume: 5; Journal Issue: 4; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 2158-3226
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BEAM PROFILES; BOUNDARY CONDITIONS; COMPARATIVE EVALUATIONS; COMPRESSION; DEFORMATION; FINITE ELEMENT METHOD; SIMULATION

Citation Formats

Zhang, Jing, Sui, Li, Shi, Gengchen, and Science and Technology on Electromechanical Dynamic Control Laboratory, 5 South Street Zhongguancun, Haidian 100081, Beijing. Buckling analysis of planar compression micro-springs. United States: N. p., 2015. Web. doi:10.1063/1.4907928.
Zhang, Jing, Sui, Li, Shi, Gengchen, & Science and Technology on Electromechanical Dynamic Control Laboratory, 5 South Street Zhongguancun, Haidian 100081, Beijing. Buckling analysis of planar compression micro-springs. United States. https://doi.org/10.1063/1.4907928
Zhang, Jing, Sui, Li, Shi, Gengchen, and Science and Technology on Electromechanical Dynamic Control Laboratory, 5 South Street Zhongguancun, Haidian 100081, Beijing. 2015. "Buckling analysis of planar compression micro-springs". United States. https://doi.org/10.1063/1.4907928.
@article{osti_22488521,
title = {Buckling analysis of planar compression micro-springs},
author = {Zhang, Jing and Sui, Li and Shi, Gengchen and Science and Technology on Electromechanical Dynamic Control Laboratory, 5 South Street Zhongguancun, Haidian 100081, Beijing},
abstractNote = {Large compression deformation causes micro-springs buckling and loss of load capacity. We analyzed the impact of structural parameters and boundary conditions for planar micro-springs, and obtained the change rules for the two factors that affect buckling. A formula for critical buckling deformation of micro-springs under compressive load was derived based on elastic thin plate theory. Results from this formula were compared with finite element analysis results but these did not always correlate. Therefore, finite element analysis is necessary for micro-spring buckling analysis. We studied the variation of micro-spring critical buckling deformation caused by four structural parameters using ANSYS software under two constraint conditions. The simulation results show that when an x-direction constraint is added, the critical buckling deformation increases by 32.3-297.9%. The critical buckling deformation decreases with increase in micro-spring arc radius or section width and increases with increase in micro-spring thickness or straight beam width. We conducted experiments to confirm the simulation results, and the experimental and simulation trends were found to agree. Buckling analysis of the micro-spring establishes a theoretical foundation for optimizing micro-spring structural parameters and constraint conditions to maximize the critical buckling load.},
doi = {10.1063/1.4907928},
url = {https://www.osti.gov/biblio/22488521}, journal = {AIP Advances},
issn = {2158-3226},
number = 4,
volume = 5,
place = {United States},
year = {Wed Apr 15 00:00:00 EDT 2015},
month = {Wed Apr 15 00:00:00 EDT 2015}
}