A Closed-Form Buckling Formula for Open-Coiled and Properly Supported Circular-Bar Helical Springs
Journal Title: Strojnicky casopis - Journal of Mechanical Engineering - Year 2018, Vol 68, Issue 3
Abstract
As a continuation of the author’s previous studies on the buckling analysis of helical springs, a closedform formula having been obtained with the help of the artificial neural network (ANN) is proposed and discussed in detail for the first time for a cylindrical close/open-coiled helical spring with fixed ends and having a solid circular section. As far as the author knows there is no such a formula in the open-literature to consider the effects of all stress resultants (torsional and bending moments, axial and shearing forces), large helix pitch angles together with the axial and shear deformations on the buckled state. The present formula may be used in a wide range of the total number of active turns, the ratio of the free axial length to the mean helix diameter, and the spring index. It is yet again revealed that it is not appropriate to use the elementary theory to determine the critical buckling loads for open-coiled springs. The present formula may allow the deeper understanding of spring buckling mechanism and to be used directly and safely in the design processes of such closely/open-coiled springs.
Authors and Affiliations
Yildirim Vebil
Keywords
Related Articles
- EP ID EP43947
- DOI https://doi.org/10.2478/scjme-2018-0025
- Views 204
- Downloads 0
A Paradigm for the Analysis of Preloaded Bolted Joints
The purpose of this paper is to present a paradigm, or guide, to the analysis of preloaded bolted joints made using multiple bolts. Classical analysis methods are applied to the interaction of the joint elements subjec...
Optimization of Sluice Gate under Fatigue Life Subjected for Forced Vibration by Fluid Flow
A ‘Sluice’ is a water-flow control gate works with sliding. So, it’s a mill race, flume or a penstock, channelling water towards a water mill, traditionally a wood or metal barrier sliding in grooves that are set in the...
Minimizing Losses During Natural Gas Transportation
The processes of supplying natural gas are accompanied by significant losses. In this regard, the complex problem of minimizing losses and improving the efficiency of energy use is very relevant. Steel pipelines for tr...
Seismic Resistance of Storage Tanks Containing Liquid in Accordance with Principles of Eurocode 8 Standard
Large capacity tanks storing various liquids are important components in distribution and transmission systems. During operation tanks can be subjected to different types of loading. Therefore, maximum attention must b...
Research of Cavitation at High Shear Stress
The article describes the theory of cavitation at high values of shear stress in a viscous liquid. For this purpose, a spatial model of two cylindrical shells imposed concentrically was designed. In the narrow gap betw...