What is it about?
An advanced theory of elastic elements of structures, springs. I try to explain how to design the light-weight springs to achieve the maximal specific stored elastic energy for a given material density. The stresses and forces during the plastic deformation are discussed. The helical and disk springs are studied, but the methods are applicable for several other forms of springs.
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Why is it important?
For sure one can use finite element codes, as I myself use to do if I have no time to find a closed form solution. Well, the true understanding comes when you follow the problem with paper and pencil, looking for an analytical solution. This book highlights the mechanics of the elastic elements made of steel alloys with focus on the metal springs for automotive industry. The industry and scientific organizations study intensively the foundations of design of spring elements and permanently improve the mechanical properties of spring materials. The development responsibilities of spring manufacturing company involve the optimal application of the existing material types. Thus, the task entails in the target-oriented evaluation of the mechanical properties and the subsequent design of the springs, which makes full use of the attainable material characteristics. The book stands as a valuable reference for professionals in practice as well as an advanced learning resource for students of structural and automotive engineering
Perspectives
The next subject I try to summarize actually is the theory of springs made of composite materials. It is a very specific subject: the plastic deformation that is so important for steel springs plays no role for composite springs. The stiffness and strength of material is highly anisotropic. In a certain direction it is excellent and in some directions catastrophically poor. Otherwise, the specific weight of composites - and especially glass-ply - is very low for spring applications due to a low elasticity modulus and low density.
Vladimir Kobelev
Uni Siegen
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This page is a summary of: Durability of Springs, January 2018, Springer Science + Business Media,
DOI: 10.1007/978-3-319-58478-2.
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