Deform - PLAXIS 3D Input objects documentation

Deform

Deformation feature on a phase, containing calculation parameters relevant to the deformation calculation.
Property Long name Unit Description
Name Name - Name of the deform feature.
Comments Comments - Comments on the deform feature.
UserFeatures UserFeatures - UserFeatures of the deform feature object.
LoadingType Loading type -
Staged construction
Consolidation and simultaneous loading in the sense of changing the load combination, stress state, weight, strength or stiffness of the elements, activated by changing the load and geometry configuration or pore pressure distribution by means of staged construction.
Minimum excess pore pressure
Consolidation without additional loading, until all excess pore pressures have decreased below a certain minimum value, specified by the minimum pore pressure parameter.
Degree of consolidation
Consolidation without additional loading, until a desired degree of consolidation, specified by the degree of consolidation parameter, is reached.
Target SumMsf
Reduction of the soil and interface strength towards a target value of the total multiplier ΣMsf. The program first performs a full safety analysis until failure and then it recalculates the last step before the target value of ΣMsf in order to reach the target exactly.
Incremental Multiplies
Reduction of the soil interface strength parameters by using Incremental Multipliers option.
UseUpdatedMesh Use updated mesh -
True
Enables the use of an updated mesh.
False
Disables the use of an updated mesh.
UseDefaultIterationParams Use default iteration parameters -
True
Default parameters will be used for the iterative procedure.
False
Parameters used for the iterative procedure will be defined manually.
OverRelaxation Over relaxation - Over relaxation factor that is used to reduce the number of iterations needed.
ArcLengthControl Arc length control -
On
Phase will use arc length control.
Off
Phase will not use arc length control.
Auto
Use of arc length control will be decided by the kernel.
UseLineSearch Use line search -
True
Enables the use of line search.
False
Disables the use of line search.
IgnoreUndrainedBehaviour Ignore undrained behaviour -
True
Undrained behaviour will be ignored in this phase.
False
Undrained behaviour will not be ignored in this phase.
IgnoreSuction Ignore suction -
True
Ignores the use of suction.
False
Suction is taken into account.
ResetDisplacementsToZero Reset displacements to zero -
True
Displacements will be reset to zero in this phase.
False
Displacements will not be reset to zero in this phase.
ResetSmallStrain Reset small strain -
True
Small strains will be reset to zero in this phase.
False
Small strains will not be reset to zero in this phase.
ResetTime Reset time -
True
Time parameter will be reset to zero in this phase.
False
Time paramter will not be reset to zero in this phase.
ResetStateVariables Reset state variables -
True
State variables will be set to default at the start of this phase.
False
State variables will not be set to default at the start of this phase.
CavitationStress Cavitation stress - Cavitation stress.
UseCavitationCutOff Use cavitation cut-off -
True
Enables the use of cavitation cut-off.
False
Disables the use of cavitation cut-off.
UseUpdatedWaterPressures Use updated water pressures -
True
Enables the use of updated water pressures.
False
Disables the use of updated water pressures.
MaxSteps Maximum steps - Maximum number of additional calculation steps.
TimeStepDetermType Time step determination -
Automatic
Automatic time step determination.
Manual
Time step determination chosen by a user.
FirstTimeStep First time step - User-defined first time step, which overrides the critical step.
MinTimeStep Minimal time step - Minimal time step value.
MaxTimeStep Maximal time step - Maximal time step value.
MaxLoadFractionPerStep Maximum load fraction per step - Amount of load fraction per step.
MaxIterations Maximum iterations - Maximum allowable number of iterations within any individual calculation step.
MaxUnloadingSteps Maximum unloading steps - Maximum allowable number of unloading steps until failure is assumed.
ToleratedError Tolerated error - Maximum allowed error of the numerical calculation.
UseGradualError Use gradual error -
True
Enables the use of gradual error.
False
Disables the use of gradual error.
DesiredMaxIterations Desired maximum iterations - Desired maximum number of iterations per calculation step.
DesiredMinIterations Desired minimum iterations - Desired minimum number of iterations per calculation step.
SumMweight Sum M weight - Total multiplier for the material weight.
IsModified IsModified -
True
Indicates that the load condition file should be rewritten.
False
Indicates that the load condition file shouldn't be rewritten.