Archive for març, 2017


9.1 Elastic behaviour of solids.

9.2 Method of sections.

9.3 Normal stress and shear stress.

9.4 Axial deformation: Young’s modulus.


  • Demonstrate your understanding of elasticity, elastic limit, stress, strain, and, ultimate strength.
  • Write and apply formulas for calculating Young’s modulus, shear modulus, and, bulk modulus.
  • Solve problems involving deformation in members of loaded trusses.

Comments Comments Off on Chapter 9. Elasticity

A rigid body is said to in equilibrium if the resultant of all forces and all their moments taken about any and all points are zero.

Free body diagram (FBD): depiction of an object with ALL the external forces acting on it.

Reactions coming from the supports: usually a body is constrained against motions using supports. It is essentially to correctly estimate the number and type of reactions that a support can provide.

Comments Comments Off on Chapter 6. Equilibrium of rigid bodies