10.2.4.1. Interface Dialog

In RecurDyn/RFlex Interface dialog box, select I-DEAS.

Figure 10.64 I-DEAS Interface dialog box

• File

  • Universal file (*.unv): Contains information on the global mass matrices, natural frequencies and mode shapes. This Universal file (*.unv) is generated by running program files, ‘RecurDyn_cms.prg’

• Units: Changes those units that used in the FE program. This option is used in the current model.

• Output File Name

  • RecurDyn/Flex Input File Name: Defines a generated file name with the extension RFI.

• Installation program files

1. Copy two program files to arbitrary folder and open <Install Dir>\Toolkits\Flexible input files\IDEAS\RecurDyn_cms.prg file.

2. Modify the path for the second prg file, <Install Dir>\Toolkits\Flexible input files\IDEAS\ID2RecurDyn_SM_cms.prg. This path is the place in which the second prg file exists.

   

   Figure 10.65 Prg Path in RecurDyn_cms.prg

3. Modify the path where a Universal file is generated. You have to use the same path between two prg files.

   

   Figure 10.66 Working Path in RecurDyn_cms.prg

Figure 10.67 Working Path in ID2RecurDyn_SM _cms.prg

10.2.4.1.1. Interface Options

RecurDyn/RFlex provides some interface options to generate appropriate RecurDyn/RFlex Input File.

Figure 10.68 Options dialog box

• Options

  • Stiffness Matrix: This option decides whether the user wants to import the stiffness matrix from the file(s) generated with FE programs or not.  Checking this option enables Static Correction Mode to be generated and User-defined Correction Mode to be attached. If these correction modes are not used, it is not necessary to include the stiffness matrix.

  • The Number of Mode to be Used: This is the number of mode to be included in RecurDyn/RFlex input file. After clicking the check button, you can determine the number of modes to be used.

• Frequency Range: Adjusts frequency range of mode to be appropriate for available modes. This is the frequency range of mode to be included in RecurDyn/RFlex input file.

  • Lower-Bound Frequency: 0.0.

  • Upper-Bound Frequency: 1.0e+10.

• Size Reduction

  • Remove Zero-Value for Rotational Mode Shape

    • The rotational mode shape data is outputted in the RFI file as a sparse format.

    • The more zero value is large, the size reduction is effective. In general, the size reduction is effective when the solid element is used, and it never influences the result of simulation.

  • Remove Mid-Node Related Information

    • This option is applied in the parabolic element only and is not outputted in the RFI file when the information is related in the mid-node. The mid-node is the node among vertexes in the parabolic element.

    • The result of the position and velocity and acceleration for the marker defined on the mid-node in the markers of RFlexbody is changed by the use of this option

    • If the user uses this option, the user cannot use the following as functions.

    Not supported functions

    Static Correction Mode

    RFlex Durability Interface for FEMFAT

• Set Information

  • Element Set

    • The Element set is outputted in the RFI file. This Element set is generated from group which is made from I-Deas.

    • When the RFI file is imported, the element set is also imported as same name with I-Deas group.

  • Node Set

    • The Node set is outputted in the RFI file. This Element set is generated from group which is made from I-Deas.

    • When the RFI file is imported, the node set is also imported as same name with I-Deas Group.

    • If both the node set and element set are defined in same group, the node set name is changed as following table.

    No. of Characters	Original group name	RecurDyn node set name
    Under 40Characters	AAA	AAA_NSET
    Over 40 Characters	AAAABBBB~IIIIJJJJ	AAAABBBB~III_NSET