Confusion over Load/Disp Control in Transient Analysis

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nspk
Posts: 6
Joined: Tue Jan 22, 2013 11:00 am

Confusion over Load/Disp Control in Transient Analysis

Post by nspk »

Hello
As per Opensees way of working, I am provided Load Control or Displacement Control Integrators only for Static Problems.
For Dynamic Ones I need to use something like Newmark.
However if I'm not mistaken Newmark is kind of an integration scheme to build up response at t+dt from the current response at t. Other than that it should not do anything. So where do we specify the stuff that usually goes in load control or displacement control for static problems, like load steps, and way of searching for equilibrium via line-search, arclength search, or simple load control? :?
vesna
Posts: 3033
Joined: Tue May 23, 2006 11:23 am
Location: UC Berkeley

Re: Confusion over Load/Disp Control in Transient Analysis

Post by vesna »

In transient analysis load steps are defined through analyze command.

In "Dynamics of Structures" book from A. Chopra you can find description of Newmark integrator. If you study it you will be able to understand the way it searches for the solution.
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