The rationale behind keyword parameterisation is best illustrated by considering a sample design scenario. Supposing you have performed an initial static analysis of an offshore structure, and you wish to examine the structural response to a series of regular wave load cases, each having a unique wave period. In earlier versions of Flexcom, this would require the creation and storage of separate keyword files for each regular wave load case. The situation becomes even more complex when separate vessel offset and current load cases are also taken into consideration. So the entire process could be quite time consuming, particularly for large load cases matrices, with the software offering little to assist you by way of automation.
The keyword parameterisation facility means that a single keyword file is all that is required to model a series of load case variations about a base model. Flexcom will then automatically create all the keyword files required to examine each load case.
Further information on this topic is contained in the following sections:
•*PARAMETERS is used to define parameters whose names may be referenced subsequently in the definition of other input variables.
•*VARIATION is used to define parameter or keyword variations.
•*COMBINATIONS is used to control the names and locations of generated keyword files, along with the required analysis combinations.
If you would like to see an example of how these keywords are used in practice, refer to K02 - Worked Example - Complex.
•*EXCEL VARIATIONS is used to generate keyword files based on a parameter matrix contained in an Excel workbook.
If you would like to see an example of how these keywords are used in practice, refer to A01 - Deepwater Drilling Riser.