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Prestressing of compression springs
Author(s) -
Knap Fryderyk,
Pilarczyk Jan W.
Publication year - 1995
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.199501149
Subject(s) - deflection (physics) , structural engineering , materials science , spring (device) , mechanics , physics , engineering , classical mechanics
A scheme of force variation during the compression of a spring in both elastic and elastic‐plastic state is presented. For the elastic state it has been found that equivalent load increments occur with equivalent deflection increments. In the elastic‐plastic state equivalent load increments correspond to higher deflection increments. Prestressing the spring increases the range of the elastic deformation of a spring. Equations for the determination of torsional moment during prestressing and relationships of total non‐dilatational strain versus elastic strain and radii of elastic zone are also presented. The effect of characteristic spring dimensions and non‐dilatational strain on spring deflection has been determined. A nomogram for the determination of the resultant equivalent strain as a function of external load, also considering residual stress distribution, has as well been elaborated.