Flexible Body

A Flexible Body is used by RBD for bodies that have flexible behavior, for instance a CMSBody.

Constructors

None.

Members

AlphaDamping

Uses a variable to define the amount of alpha Rayleigh damping (proportional to the mass matrix) to be considered for the flexible body. The variable can be either dependent or constant.

Example:

aFlexibleBody.AlphaDamping=100

Or equivalently:

var=CS_Variable()
var.SetConstantValues(System.Array[float]([100.]))
aFlexibleBody.AlphaDamping=var

BetaDamping

Uses a variable to define the amount of beta Rayleigh damping (proportional to the mass matrix) to be considered for the flexible body. The variable can be either dependent or constant.

Example:

Env=CS_Environment.GetDefault()
Sys=Env.System
 
array=System.Array.CreateInstance(float,4,2)
array[0,0]=0.0
array[0,1]=5.e-6
array[1,0]=0.05
array[1,1]=5.e-6
array[2,0]=0.051
array[2,1]=1.e-4
array[3,0]=0.1
array[3,1]=1.e-4
 
table=CS_PointsTable(array)
 
(err,found,time)=Sys.FindOrCreateInternalMeasure(CS_Measure.E_MeasureType.E_Time)
 
var=CS_Variable()
var.AddInputMeasure(time)
var.SetTable(table)
 
aFlexibleBody.BetaDamping = var

CMatrixScaleFactor

Define a factor to be used to multiply the default damping matrix. For instance, with a CMSBody, this matrix can be created during the generation pass. When the damping matrix is generated for a Condensed Part (CMSBody), it will be automatically taken into account in the RBD use pass with a factor equal to 1.0.

Member functions

SetModalDamping(iDof, variable)

Define the amount of damping used for the degree of freedom specified by iDof (index starts at 0). The variable can be either dependent or constant.

GetModalDamping(iDof)

Retrieve the damping variable defined for the degree of freedom iDof (index starts at 0).

SetLoadVectorScaleFactor(iLV, variable)

Define a scale factor applied to the flexible body internal load specified by iLV (index starts at 0). By default, the first load vector uses a constant scale factor equal to 1.0.

GetLoadVectorScaleFactor(iLV, variable)

Retrieve the variable associated to the factor specified by iLV (index starts at 0).

Derived classes

CS_CMSBody