Boundary Conditions |
 
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Boundary Conditions |
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Flexcom presents a comprehensive range of options to fully describe the constraints which are applied to the finite element model. The various options for the application of boundary conditions are discussed in the following sections:
•Application of Rotational Constraints discusses the significance of rotational degrees of freedom in terms of boundary conditions.
•Constant Boundary Conditions outlines standard time invariant constraints.
•Vessel Boundary Conditions how vessel motions may be applied to attached nodes.
•Sinusoidal Boundary Conditions describes a facility to apply motions which vary sinusoidally with time.
•Harmonic Boundary Conditions describes a facility to apply motions which vary harmonically in a frequency domain regular wave analysis.
•Arbitrary Boundary Conditions describes the user-subroutine boundary condition facility, which provides for complete generality in terms of constraint application.
•Timetrace Boundary Conditions outlines how arbitrary time-varying boundary conditions may be applied via motion time histories.
The specification of boundary conditions is optional, and by default no constraints are applied. This allows free-falling objects, for example, to be analysed. However, most problems will require some boundary conditions to be specified.
•*BOUNDARY is used to define boundary conditions.