question about get tangent()

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alexli
Posts: 25
Joined: Fri May 02, 2008 8:27 am

question about get tangent()

Post by alexli »

Hello fmk,

can the the stiffness be secant stiffness? and the commit state() and revert to last commit() what are their function? Thank you ahead!
Best wishes,
Alexli
I want to become a good engineer
fmk
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Post by fmk »

the stiffness can be the secant you just won't converge as fast as if you had provided the tangent stiffness ..

comiitState tells the object a converged step has been reached (the last trial step was on the solution path and is being accepted) .. if the object needs to it should save any history data that may be required for the next step

revertToLastCommit tells the object that the last trial step is to be ignored and the object is to go back to the state it was in and the last converged step, i.e. the state it was in when commit was last called on it.
alexli
Posts: 25
Joined: Fri May 02, 2008 8:27 am

Post by alexli »

Thank you for your help! :D
I want to become a good engineer
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