Particular cases of loading - Tension / Compression

Question 1

What is the equation for stress we can use that only applies to uniaxial loading?

Answer 1

Stress = Force / Area

Question 2

What is the principle of superposition?

Answer 2

The resultant stress or strain at a point in a solid subjected to the action of a number of forces is the algebraic sum of the stresses/strains due to each force as if acting independently

Question 3

What conditions are required for the principle of superposition?

Answer 3

• The loading must be linearly related to the stress / displacement
• The loading must not be significantly change the initial geometry of the structural member