Equilibrium system of rigid forces

Equilibrium system of rigid forces

1. Idealization of supports

   • How can we idealize structures
     • SPAN (Distance between beams)
       • HINGE (Rótula)
   • Ways
     • Fixed ended (Embotramiento)
       • 2 reactions (no rotation)
     • Pin-ended
     • Fixed support (empotramiento)
   • ECUATIONS OF STATICS
     • F=0
     • M=0

2. Grade of hiperstatism

   • Nº reactions - Nº ecuations
     • < 0
       • Mechanism (grade is numbered) NOT STABLE
     • = 0
       • Isostatic (min. ecuation to maintain structe in equilibrium) CAN BE SOLVED
     • > 0
       • Hiperstatic (more than the unit) VERY STABLE

3. Forces

   • Action (external)
   • Reaction (internal)
     • Axial (N=Normal)
     • Shear (V)
     • Bending (B=moment )
     • Torso