Notes on the design of helical compression and tension springs of round wire
Abstract
This Data Item is available as part of the ESDU Sub-series on Stress and Strength. A comprehensive guide to the concepts and principles relating to the design and operation of helical springs is presented. The prestressing process is described and the considerations governing choice of material, operational reliability, corrosion, temperature, electrical conductivity are discussed. Values of the operating temperature ranges of 27 spring materials are tabulated. The manner of loading is discussed with reference to cyclic, transverse, impact, and eccentric loading and buckling. Different designs of end forms for compression and tension springs are described with their effect on manufacturing costs and the free and solid lengths. Surface finish and treatment processes are examined. An optimum approach to design which minimizes either the weight, volume or closed length and an example calculation are described. The information required by the manufacturer is discussed. A specimen sheet is provided which tabulates the essential details required for manufacture. A number of alternative spring types are briefly described and a glossary of spring terminology is appended.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- December 1982
- Bibcode:
- 1982STIN...8332986.
- Keywords:
-
- Coils;
- Compression Loads;
- Helical Windings;
- Springs (Elastic);
- Tensile Stress;
- Wire;
- Equipment Specifications;
- Fatigue (Materials);
- Product Development;
- Service Life;
- Surface Finishing;
- Engineering (General)