DIN 743-3:2012

Calculation of load capacity of shafts and axles - Part 3: Strength of materials

This standard gives for necessary material strength for the fatigue strenght according to DIN 743-1.*A large number of failures in mechanical engineering is due to damage to axles and shafts. The most frequent cause for this is fatigue failure (fatigue fractures, vibration fractures). In addition to the optimum structural design, the calculation of the safety against the occurrence of fatigue failure and damage due to maximum load (permanent deformation, precrack) presents a necessary measure. This standard specifies the necessary material characteristics necessary for .proof of strength in accordance with DIN 743-1. This standard has been prepared by Working Committee NA 060-34-32 AA "Wellen und Welle-Nabe-Verbindungen" ("Shafts and shaftto collar connections") at the Technical Section Power transmission engineering of the Mechanical Engineering Standards Committee (NAM) at DIN, the German Institute for Standardization e. V. The DIN 743 standard series - Shafts and axles, calculation of load capacity - consists of - Part 1: General basics; - Part 2: Theoretical stress concentration factors and fatigue notch factors; - Part 3: Strength of material; - Part 4: Fatigue limit, endurance limit - Equivalently damaging continuous stress; - Supplement 1: Examples to Part 1 to 3; - Supplement 2: Examples to Part 4. The following modifications have been made with respect to DIN 743-3:2000-10: a) material designations have been adapted. Previous editions: DIN 743-3:1998-05, 2000-10.