NEN EN 13906-3 : 2014
Current
The latest, up-to-date edition.
CYLINDRICAL HELICAL SPRINGS MADE FROM ROUND WIRE AND BAR - CALCULATION AND DESIGN - PART 3: TORSION SPRINGS
12-01-2013
Foreword
1 Scope
2 Normative references
3 Terms and definitions, symbols, units and abbreviated terms
3.1 Terms and definitions
3.2 Symbols, units and abbreviated terms
4 Theoretical torsion spring diagram
5 Design Principles
5.1 General
5.2 Design of the ends
5.3 Design of the spring body
6 Types of loading
6.1 Static and quasi-static loading
6.2 Dynamic loading
7 Stress correction factor
8 Material property values for the calculations of springs
9 Design formulate
9.1 Design assumptions
9.2 Formulae
10 Permissible bending stress
10.1 Permissible bending stress under static or quasi-static
loading
10.2 Permissible stress range under dynamic loading
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