The structural analysis software RFEM 6 is the basis of a modular software system. The main program RFEM 6 is used to define structures, materials, and loads of planar and spatial structural systems consisting of plates, walls, shells, and members. The program also allows you to create combined structures as well as to model solid and contact elements.
RSTAB 9 is a powerful analysis and design software for 3D beam, frame, or truss structure calculations, reflecting the current state of the art and helping structural engineers meet requirements in modern civil engineering.
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RFEM can communicate with Autodesk Inventor in a limited way. Inventor reads and writes volumetric and geometric information similar to .IFC coordination view files. A .STEP file can be exported from this program. RFEM can then import such files in the BIM/CAD Model with the additional module RF-LINK.
The COM interface allows you to read out or create a user-defined response spectrum in RFEM and RSTAB.
For the conversion, the interface to the module (IDynamModule) must first be retrieved via the interface to the RFEM model (IModel). This interface is then used to create the module case (IModuleCase). IModuleCase includes the GetRSParams function, which can be used to read out the parameters for the response spectrum. On the other hand, the SetRSParams function can write new data. The following example code clarifies it:
Dim iApp As RFEM5.ApplicationDim iMod As RFEM5.modelSet iApp = GetObject(, "RFEM5.Application")Dim rs_no As Integerrs_no = 1On Error GoTo e ' Checks RS-COM license and locks the application for using by COM. iApp.LockLicense Set iMod = iApp.GetActiveModel ' get module interface Dim iDyn As IDynamModule Set iDyn = iMod.GetModule("DynamPro") ' get module case interface Dim iDynCase As IModuleCase Set iDynCase = iDyn.GetData ' set response spectra parameters Dim rspara As RSParams rspara = iDynCase.GetRSParams(rs_no) Dim rs_spec(0 To 10) As RSTableRow Dim index As Integer index = 0 rs_spec(index).s = 0.6 rs_spec(index).T = 0 index = 1 rs_spec(index).s = 1.33 rs_spec(index).T = 0.153 index = 2 rs_spec(index).s = 1.33 rs_spec(index).T = 0.4 index = 3 rs_spec(index).s = 1.204 rs_spec(index).T = 0.443 index = 4 rs_spec(index).s = 1.07 rs_spec(index).T = 0.5 index = 5 rs_spec(index).s = 0.7 rs_spec(index).T = 0.761 index = 6 rs_spec(index).s = 0.508 rs_spec(index).T = 1.051 index = 7 rs_spec(index).s = 0.367 rs_spec(index).T = 1.453 index = 8 rs_spec(index).s = 0.267 rs_spec(index).T = 1.995 index = 9 rs_spec(index).s = 0.16 rs_spec(index).T = 2.584 index = 10 rs_spec(index).s = 0.16 rs_spec(index).T = 5 rspara.UserDefinedTable = rs_spec rspara.Comment = "test rs" rspara.DefinitionType = ResponseSpectraType.UserDefinedRS rspara.description = "test rs via COM" rspara.Number = rs_no iDynCase.SetRSParams rs_no, rspara e: If Err.Number <> 0 Then MsgBox Err.description, , Err.Source iMod.GetApplication.UnlockLicense Set iMod = Nothing Set iApp = Nothing
The response spectrum was created according to EN 1998‑1:2010 and has 11 points. First, an array of the RSTableRow type with 11 elements was created, filled with data, and then saved under the UserDefinedTable property. The transfer is carried out using the SetRSParams command.