structures

structures

1. a collection of elements arranged in an optimun way to support a body (skeleton) or object (frame)

2. types

   • mass structures
     • solid,heavy and very sturd
   • frame structures
     • columns and beams act as supporting elements
   • truss structures
     • bars are forming trianglules. lightweight and sturdy
   • suspended structures
     • they are held by cables and suspenders attached to sturdy supports

3. force

   • An influence that can deform a body or change its movement or produce motion.

4. stresses

   • The physical demands that a body or object must withstand when one or more external forces are applied to it.
   • types
     • compression
     • tension
     • torsion
     • shear
     • bending

5. strength

   • : The ability that a material has to withstand external forces without breaking.

6. condition for strong structures

   • rigid materials
     • : It does not change its shape when a force is applied to it.
   • equilibrium
     • A body is in equilibrium when its structure remains stationary
   • stability
     • A structure is stable when it remains in equilibrium even when a force is applied to it. It depends on the position of its centre of gravity.

7. elements that increase ridigity

   • trussing
     • is a method to make weak structures more rigid. We can add strengthening elements
   • brace
   • stay cables
   • column
   • beam

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