class TransientIntegrator : public IncrementalIntegrator

Inheritance:

Public Methods

TransientIntegrator(int classTag)

virtual ~TransientIntegrator()

virtual int formTangent(void)

virtual int formEleResidual(FE_Element *theEle)

virtual int formNodUnbalance(DOF_Group *theDof)

virtual int newStep(double deltaT)

Inherited from IncrementalIntegrator:

Public Methods

virtual void setLinks(AnalysisModel &theModel, LinearSOE &theSOE)

virtual int formUnbalance(void)

virtual int formEleTangent(FE_Element *theEle)

virtual int formNodTangent(DOF_Group *theDof)

virtual int update(const Vector &deltaU)

virtual int commit(void)

virtual int getLastResponse(Vector &result, const ID &id)

Protected Methods

LinearSOE* getLinearSOEPtr(void) const

AnalysisModel* getAnalysisModelPtr(void) const

virtual int formNodalUnbalance(void)

virtual int formElementResidual(void)

TransientIntegrator(int classTag)

The integer classTag is passed to the IncrementalIntegrator classes constructor

virtual ~TransientIntegrator()

Does nothing

virtual int formTangent(void)

Invoked to form the structure tangent matrix. The method is rewritten for this class to include inertia effects from the nodes. The method iterates over both the FE_Elements and DOF_Groups invoking methods to form their contributions to the A matrix of the LinearSOE and then adding these contributions to the A matrix. The method performs the following: \begin{tabbing} while \= \+ while \= while \= \kill theSysOfEqn.zeroA();

virtual int formEleResidual(FE_Element *theEle)

Called upon by the FE_Element theEle to determine it's contribution to the rhs of the equation. The following are invoked before 0 is returned. \begin{tabbing} while \= \+ while \= while \= \kill theEle->zeroResidual()

virtual int formNodUnbalance(DOF_Group *theDof)

Called upon by the DOF_Group theDof to determine it's contribution to the rhs of the equation. The following are invoked before 0 is returned. \begin{tabbing} while \= \+ while \= while \= \kill theDof->zeroUnbalance()

virtual int newStep(double deltaT)

Invoked to inform the integrator that the transient analysis is proceeding to the next time step. To return 0 if successful, a negative number if not.

Direct child classes:

WilsonTheta
Newmark
HHT

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