3rd post: Stresses and Rigidity

stresses are the physical demands that a body or object must whithstand when one or more external forces are applied to it
there are 5 types of stresses

Compression: This is caused by forces acting on a body that tend to flatten it or reduce its length or thickness.          

         

• Tension: This is caused by forces acting on a body that tend to stretch it.

• Bending: This is caused by forces acting on an element that make it curve or bend.

• Torsion:this is caused by forces acting on a body that  make it twist

• Shear:this is caused by two equal forces applied in opposite directions that act on lines of action close to each other.

2nd post

A structure is a collection of elements arranged in an optium way to support a body or an object.

Mass structures: These are solid, heavy, and very stury structures. Like walls,dams, etc.

Frame structures: These structures are formed by columns and beams that act as supporting elements. One example is the structure of a building.

      Truss structures: These structures  sre composed of bars that form triangles. They are lightweight and sturdy.For example electricy pylons

Suspended structures.these are held in place by cables and suspenders attached to sturdy supports.For example bridges, tents, etc

a force is an influence thatcan deform a body or change its movement or produce motion in a body at rest.

stresses are the physical demands that a body or objet must withstand when one or more external forces applied to it.

Presentation

Hi guys,we are Aaron and Noemi. We are from Spain and we are going to talk about  STRUCTURES in our blog.
We hope that you like it.