Abstract
A bolt is a threaded fastener that is a type of detachable joints. They are fundamental machine components as they facilitate manufacturing, assembly, disassembly, replacement and maintenance of different machine elements. One of the most time-consuming calculations in designing machine elements is related to bolts. In this chapter, we try to simplify the calculations regarding design of bolt by applying a graphical method.
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Abbreviations
- A p :
-
Cross-sectional area of bolt head, mm2
- A s :
-
Effective cross-sectional area of bolt, mm2
- d :
-
Bolt diameter, mm
- F :
-
Applied or external load, kN
- F axial :
-
Axial force, kN
- F cl :
-
Clam** force, kN
- F pre :
-
Preload or initial tension due to tightening, kN
- F shear :
-
Shear force, kN
- F total :
-
Total load on bolt, kN
- F z :
-
Preload force loss after assembly, kN
- M :
-
Tightening torque, N m
- p per :
-
Allowable pressure of the connected elements, MPa
- R e :
-
Yield strength of bolt, MPa
- R m :
-
Ultimate tensile strength of bolt, MPa
- \(\mu\) :
-
Coefficient of friction
- \(\sigma_f\) :
-
Fatigue strength, MPa
- \(\chi\) :
-
Factor of flexibility
References
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Zhukov KP, Gurevich YE (2014) Design of parts and assemblies of machines: a textbook for universities. Mechanical Engineering, Moscow (in Russian)
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Yaghoubi, M., Tavakoli, H. (2022). Bolts. In: Mechanical Design of Machine Elements by Graphical Methods. Materials Forming, Machining and Tribology. Springer, Cham. https://doi.org/10.1007/978-3-031-04329-1_5
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DOI: https://doi.org/10.1007/978-3-031-04329-1_5
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Online ISBN: 978-3-031-04329-1
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