MT-1620 al.2002 Figure 14.2 Representation of General Beam force/leng Maintain several of the same definitions for a beam and basic assumptions Geometry: length of beam(x-dimension) greater than y and Z dimensions Stress State Oxx is the only "important stress; Ox and ox found from equilibrium equations, but are secondary in importance Deformation: plane sections remain plane and perpendicular to the midplane after deformation( Bernouilli-Euler Hypothesis) Paul A Lagace @2001 Unit 14-3Unit 14 - 3 Paul A. Lagace © 2001 MIT - 16.20 Fall, 2002 Figure 14.2 Representation of General Beam Maintain several of the same definitions for a beam and basic assumptions. • Geometry: length of beam (x-dimension) greater than y and z dimensions • Stress State: σxx is the only “important” stress; σxy and σxz found from equilibrium equations, but are secondary in importance • Deformation: plane sections remain plane and perpendicular to the midplane after deformation (Bernouilli-Euler Hypothesis)