ANALYSIS OF THREAD COIL EFFORT IN THE SCREW – NUT JOINT
Journal Title: Scientific Journals of Silesian University of Technology. Series Transport - Year 2014, Vol 2014, Issue 82
Abstract
The paper concerns optimization of screws in the unit including connecting-rod – connecting rod big end of the SW 680 Leyland motor related to uniform distribution of loading on all the thread coils. Optimization of screw geometry insists in partial turning of the thread coil at a determined angle. The stress state calculations were performed with the finite element method and the Nastran/Patran program. It has been shown that the angle 3o is the optimum angle of partial turning of the thread contour. At that angle, when the screw was loaded by the tensile force 29 kN, we obtained the reduced stress decreased by 12%, and more uniform distribution of the thread coil as compared with the traditional screw (not optimized).
Authors and Affiliations
Grzegorz GASIAK
Keywords
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