C6.2 Stress From Combined Loadings

In engineering structures, most of the time we don’t only encounter one load. Consider the following:

Shaft with multiple loadings: torque, shear and bending

C6.2 Stress From Combined Loadings

In engineering structures, most of the time we don’t only encounter one load. Consider the following:

Shaft with multiple loadings: torque, shear and bending

These different loadings cause different stresses (shear, bending, torsion) to all act at the same time. What’s more, in some cases we have 2 or more stresses acting in the same direction (e.g. tensile axial stress and tensile bending stress) that can produce a “resultant” stress.

We need to fully quantify all stress components acting on the structure to design for its safety. Fortunately we’ve covered the formulas for all these stresses in the previous chapters. Here’s a summary of the stresses:

Combined stress loading formulae: axial; torsion; bending; transverse shear

The best way to learn how to approach questions from this topic is to learn by example.

These different loadings cause different stresses (shear, bending, torsion) to all act at the same time. What’s more, in some cases we have 2 or more stresses acting in the same direction (e.g. tensile axial stress and tensile bending stress) that can produce a “resultant” stress.

We need to fully quantify all stress components acting on the structure to design for its safety. Fortunately we’ve covered the formulas for all these stresses in the previous chapters. Here’s a summary of the stresses:

Combined stress loading formulae: axial; torsion; bending; transverse shear

The best way to learn how to approach questions from this topic is to learn by example.