Difference between revisions of "Branch Switch"
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(Created page with "Branch switch in FEAP is possible if one use arclength continuation methods. Here is a simple example. Consider a built-in column with an axial load. <pre> feap ** Buckling Path Following with Arclength ** 0 0 0 3 3 8 para e = 1.0 d = 0.5 h = 20 pi = 4.*atan(1.) i = 16.*d*d*d*d/12 pe = pi*pi*e*i/h/h/4 ! Euler load p = 0.1*pe/4/d/d ! Reach euler load a prop value of 1 mate solid elastic moon e 0.4 0.05 finite mixed block cart 4 4 20*2...") |
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Revision as of 15:22, 13 July 2023
Branch switch in FEAP is possible if one use arclength continuation methods. Here is a simple example. Consider a built-in column with an axial load.
feap ** Buckling Path Following with Arclength ** 0 0 0 3 3 8 para e = 1.0 d = 0.5 h = 20 pi = 4.*atan(1.) i = 16.*d*d*d*d/12 pe = pi*pi*e*i/h/h/4 ! Euler load p = 0.1*pe/4/d/d ! Reach euler load a prop value of 1 mate solid elastic moon e 0.4 0.05 finite mixed block cart 4 4 20*2 1 -d -d 0 2 d -d 0 3 d d 0 4 -d d 0 5 -d -d h 6 d -d h 7 d d h 8 -d d h eboun ! Fixed base 3 0 1 1 1 csur ! Pressure load (dead) surface 1 -d -d h -p 2 d -d h -p 3 d d h -p 4 -d d h -p end