Yes there is torsion at the critical section and if you draw a free body diagram using a cut just to the left of the critical section and examine the right part of the cut handle, it should become evident that the lever moment arm for torsion is 110 mm. The 45 degree angle affects loading in that angled piece because there are torsional and bending components of the moments at that section. Otherwise it doesn’t really change the stresses to the left of the critical section. Incidentally, for torsion shear stresses of the flat bar, the constant ‘c’ comes from the h/b ratio from tables, it is not the h/b ratio itself, you probably understand that but said it wrong ( c is in the 0.2 to 0.3 range depending on that ratio).dbag123 said:
The suitable cross sectional area for strength can be determined through various methods such as analyzing stress and strain calculations, conducting physical tests, and consulting engineering standards and guidelines.
The factors that should be considered include the material properties, applied load or force, safety factor, environmental conditions, and any potential stress concentrations.
Yes, computer simulations can be used to analyze stress and strain distributions and determine the most suitable cross sectional area for a specific application.
The shape of a cross section can greatly impact its strength as different shapes have different stress and strain distributions. Generally, a shape that distributes the stress evenly is considered to be stronger.
There is no single standard formula as it depends on various factors such as the material, loading conditions, and safety factor. However, there are established equations and guidelines that can be used as a starting point for determining the suitable cross sectional area for strength.