Stress cross-section
The stress cross-section is the circular area that is assumed to be decisive for the calculation of mechanical stresses for a threaded bolt ( screw , threaded bolt , rod, etc.) as a substitute for the actual sectional area . Since the thread groove runs in a spiral, the relevant diameter is larger than the core diameter of the thread. In the case of pointed threads, the approximation of the tension diameter equals the mean value of the core and pitch diameters. In the case of trapezoidal threads, the stress cross-section is larger: approximately the pitch diameter as a substitute diameter (see adjacent figure).
In the dimension tables calculated from the voltage diameter circular area is often called voltage cross-sectional area specified (z. B. in Article metric thread ).
Individual proof
- ↑ www.ingenieurkurse.de: Material selection and stress cross-section of a screw