This preview shows pages 1–3. Sign up to view the full content.
EAS 209-Spring 2008 Instructors: Christine Human Gilberto Mosqueda 1/23/2008 1 Lecture 06-Axial Deformation Lecture 6 Deformations of Members Under Axial Loading Consider a homogeneous rod (constant E) of length L and uniform cross sectional area A, subjected to a centric axial load P From Hooke’s Law εσE=APLδtherefore LEAPδ=rearranging AEPL=δAE- axial rigidity Sign convention •Elongation +ve •Shortening -ve EAS 209-Spring 2008 Instructors: Christine Human Gilberto Mosqueda 1/23/2008 2 Lecture 06-Axial Deformation Stiffness and flexibility of a prismatic bar are defined in the same way as for a spring Spring fP=δf-flexibility δkP=k-stiffness Bar equivalent AELf=LAEfk==1Unless specified, prismatic bars are assumed to have the same stiffness in compression and tension.
has intentionally blurred sections.
Sign up to view the full version.