Experimental Analysis of Transverse Stiffness Distribution of Helical Compression Springs

Abstract This paper presents the results of an experimental analysis distribution transverse stiffness cylindrical compression helical springs with selected values geometric parameters. The influence number active coils and design end on was investigated. Experimental tests were carried out for 18 sets spring samples that differed in coils, end-coil index, three measurements taken per sample, at two static axial deflection. radial directions tested every 30° angle. A total 1,296 taken, from which distributions determined. It shown depending direction deflection, differences between highest lowest value a given can exceed 25%. compared formulas available literature. case small discrepancies average calculated based literature relations reach several tens percent. Analysis allowed conclusions to be drawn, making it possible estimate suitability computational model determining geometrical