Integrator Command: Difference between revisions

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{{CommandManualMenu}}
This command is used to construct the Integrator object. The Integrator object determines the meaning of the terms in the system of equation object Ax=B.
This command is used to construct the Integrator object. The Integrator object determines the meaning of the terms in the system of equation object Ax=B.


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     * specify the tangent matrix and residual vector at any iteration
     * specify the tangent matrix and residual vector at any iteration
     * determine the corrective step based on the displacement increment dU
     * determine the corrective step based on the displacement increment dU
The system of nonlinear equations is of the form:
Static analysis:<nowiki>Insert non-formatted text here</nowiki>
Transient analysis:<math>\sqrt{1-e^2}</math>


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Transient Integrators:
Transient Integrators:
*[[Central Difference]]
*[[Newmark Method]]
*[[Newmark Method]]
*[[Hilbert-Hughes-Taylor Method]]
*[[Hilber-Hughes-Taylor Method]]
*[[Generalized Alpha Method]]
*[[TRBDF2]]
*[[Explicit Difference]]

Latest revision as of 19:15, 13 June 2017



This command is used to construct the Integrator object. The Integrator object determines the meaning of the terms in the system of equation object Ax=B.

The Integrator object is used for the following: 

   * determine the predictive step for time t+dt
   * specify the tangent matrix and residual vector at any iteration
   * determine the corrective step based on the displacement increment dU


The type of integrator used in the analysis is dependent on whether it is a static analysis or transient analysis.

Static Integrators:

Transient Integrators:

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