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API buckling length problems

28 REPLIES 28
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Message 1 of 29
AbelSV78
1737 Views, 28 Replies

API buckling length problems

Hi everyone again,

 

I am trying to define an structure with VB.net and I have problems with buckling length. I am defining it with:

 

 With RdmMembDefData

            .SetStructureSwayYZ(RobotOM.IRDimMembDefBucklingDataType.I_DMDBDT_BUCKLING_Y, 1)

            .SetLengthYZUV(RobotOM.IRDimMembDefLengthDataType.I_DMDLDT_LENGTH_Y, 1.0#)

            .SetStructureSwayYZ(RobotOM.IRDimMembDefBucklingDataType.I_DMDBDT_BUCKLING_Z, 1)

            .SetLengthYZUV(RobotOM.IRDimMembDefLengthDataType.I_DMDLDT_LENGTH_Z, 1.0#)

            .SetDeflectionYZ(RobotOM.IRDimMembDefDeflDataType.I_DMDDDT_DEFL_Y, 1)

            .SetDeflectionYZ(RobotOM.IRDimMembDefDeflDataType.I_DMDDDT_DEFL_Z, 1)

            .SetDeflYZRelLimit(RobotOM.IRDimMembDefDeflDataType.I_DMDDDT_DEFL_Y, 10.0#)

            .SetDeflYZRelLimit(RobotOM.IRDimMembDefDeflDataType.I_DMDDDT_DEFL_Z, 10.0#)

            .CantileverMode = 1

            .SetDisplacementXY(RobotOM.IRDimMembDefDispDataType.I_DMDDDT_DISP_X, 1)

            .SetDisplacementXY(RobotOM.IRDimMembDefDispDataType.I_DMDDDT_DISP_Y, 1)

            .SetDisplXYRelLimit(RobotOM.IRDimMembDefDispDataType.I_DMDDDT_DISP_X, 10.0#)

            .SetDisplXYRelLimit(RobotOM.IRDimMembDefDispDataType.I_DMDDDT_DISP_Y, 10.0#)

        End With

 

but I have obtained a numeric length of the bars. I want to enter a coefficient for "Y" and a  coefficient for "Z", which is the correct method?

 

Thanks...

28 REPLIES 28
Message 2 of 29
Rafal.Gaweda
in reply to: AbelSV78

It is numeric length of the bars


Rafal Gaweda
Message 3 of 29
AbelSV78
in reply to: Rafal.Gaweda

I am trying with this:

 

Dim RdmCodeMembDefPar As Object
RdmCodeMembDefPar = RdmMembDefData.CodeParams
With RdmCodeMembDefPar
.BuckLenghtCoeffY = 1.0#
.BucklingDiagramY = "I_DBD_CM66_NO"
.BuckLenghtCoeffZ = 0.8
.BucklingDiagramZ = I_DBD_CM66_PINNED_STIFF_0_7
.LoadTypeY = I_DLT_CM66_NO_MID_SPAN_FORCE_LOAD
.LoadTypeZ = I_DLT_CM66_USR_DEF_MOM_MC
.LoadTypeDistY = 2.0#
.LoadTypeMomMcZ = 26.0#
.LatBuckType = I_DLBT_CM66_CANTILEVER
.LoadLevel = I_DLL_CM66_UPP_SECT_PAR_LOADED
.LoadLevelValue = 1.2
.LatBuckCoef_LowFlan = I_DLBCD_CM66_USER_DEFINED
.LatBuckCoef_UppFlan = I_DLBCD_CM66_USER_DEFINED
.UserDefLatBuckCoef_LowFlan = 0.7
.UserDefLatBuckCoef_UppFlan = 0.9
.TensAreaNetGros = 1.1
.TubeControl = 1
End With
RdmMembDefData.CodeParams = RdmCodeMembDefPar

 

but it does not work in order to enter a coefficient for buckling length. Is there any way to enter this coefficient?

 

Thank you...

Message 4 of 29
Rafal.Gaweda
in reply to: AbelSV78

Example:

 

 RobApp.Project.Preferences.SetActiveCode I_CT_STEEL_STRUCTURES, "ENV 1993-1:1992"
    Dim RLabel As IRobotLabel
    Dim RdimLabelData  As IRDimMembDefData
    Dim RDimMembParams As IRDimMembParamsEC3
    
        Set RLabel = RobApp.Project.Structure.Labels.Create(I_LT_MEMBER_TYPE, "My Label")
        Set RdimLabelData = RLabel.Data
        
        RdimLabelData.SetDeflYZRelLimit I_DMDDDT_DEFL_Y, 100
        RdimLabelData.SetDeflYZRelLimit I_DMDDDT_DEFL_Z, 200
        RdimLabelData.SetDisplXYRelLimit I_DMDDDT_DISP_X, 300
        RdimLabelData.SetDisplXYRelLimit I_DMDDDT_DISP_Y, 400
        

        Set RDimMembParams = RdimLabelData.CodeParams
        
        RDimMembParams.BuckLengthCoeffY = 10
        '......
        RdimLabelData.CodeParams = RDimMembParams
        RobApp.Project.Structure.Labels.Store RLabel
        Set RLabel = Nothing

End If

 



Rafal Gaweda
Message 5 of 29
AbelSV78
in reply to: AbelSV78

thanks again, but I have some troubles with "RDimMembParams = RdimLabelData.CodeParams", see attachment.

 

regards..

Message 6 of 29
Rafal.Gaweda
in reply to: AbelSV78

Upps , sorry.

Correct line with correct code name:

 

RobApp.Project.Preferences.SetActiveCode I_CT_STEEL_STRUCTURES, "EC3"

 



Rafal Gaweda
Message 7 of 29
AbelSV78
in reply to: AbelSV78

Thank you, but it works with EC3 code only.

 

I am trying with other codes, and it doesn' work. I need:

 

UNE-EN 1993:2008/AC:2009

ANSI/AISC 360-05

.

.

.

 

The member type difinition window is different in each code, but the names of the parameters are the same.

 

Regards...

Message 8 of 29
Rafal.Gaweda
in reply to: AbelSV78

    RobApp.Project.Preferences.SetActiveCode I_CT_STEEL_STRUCTURES, "ANSI/AISC 360-05"
    Dim RLabel As IRobotLabel
    Dim RdimLabelData  As IRDimMembDefData
    Dim RDimMembParams As IRDimMembParamsANS
    
        Set RLabel = RobApp.Project.Structure.Labels.Create(I_LT_MEMBER_TYPE, "My Label")
        Set RdimLabelData = RLabel.Data
        
        RdimLabelData.SetDeflYZRelLimit I_DMDDDT_DEFL_Y, 100
        RdimLabelData.SetDeflYZRelLimit I_DMDDDT_DEFL_Z, 200
        RdimLabelData.SetDisplXYRelLimit I_DMDDDT_DISP_X, 300
        RdimLabelData.SetDisplXYRelLimit I_DMDDDT_DISP_Y, 400
        

        Set RDimMembParams = RdimLabelData.CodeParams
        
        RDimMembParams.BuckLenghtCoeffY = 10
        '......
        RdimLabelData.CodeParams = RDimMembParams
        RobApp.Project.Structure.Labels.Store RLabel
        Set RLabel = Nothing

 



Rafal Gaweda
Message 9 of 29
AbelSV78
in reply to: AbelSV78

I am checking the previous code, It works. Then I am trying with other codes, and I have found out a trouble. In "RobotOM.IRDimMembParams" we have 9-10 options, but in Robot, we have a lot of options (see attached). Because of these, is it possible to design with API taking into account all codes included in ROBOT? We need some of them to develop our projects. And more important, HOW? 🙂

 

Thank you for your efforts...

Message 10 of 29
Rafal.Gaweda
in reply to: AbelSV78

 Because of these, is it possible to design with API taking into account all codes included in ROBOT? 

 

No, or I least I do not think so.



Rafal Gaweda
Message 11 of 29
AbelSV78
in reply to: AbelSV78

I can see, It is a bit limitated. About EC3, take care, with this option code, Robot takes not actual Eurocodes Standards.

 

Thank you again and we will look for news about this in the future...

Message 12 of 29
Rafal.Gaweda
in reply to: AbelSV78

EC3 = ENV 1993-1:1992


Rafal Gaweda
Message 13 of 29
AbelSV78
in reply to: AbelSV78

It is OK, but, ENV are provisional and in ROBOT it is possible to select EN 1993-1:2005/AC:2009, the actual one...

Message 14 of 29
Rafal.Gaweda
in reply to: AbelSV78

EC3_2004 = EN 1993-1:2005/AC:2009

 

    RobApp.Project.Preferences.SetActiveCode I_CT_STEEL_STRUCTURES, "EC3_2004"
    Dim RLabel As IRobotLabel
    Dim RdimLabelData  As IRDimMembDefData
    Dim RDimMembParams As IRDimMembParamsE32

 



Rafal Gaweda
Message 15 of 29
Rafal.Gaweda
in reply to: Rafal.Gaweda

EC3_2004_ESP = UNE-EN 1993:2008/AC:2009

 

    RobApp.Project.Preferences.SetActiveCode I_CT_STEEL_STRUCTURES, "EC3_2004_ESP"
    Dim RLabel As IRobotLabel
    Dim RdimLabelData  As IRDimMembDefData
    Dim RDimMembParams As IRDimMembParamsE32

 

You can find code names: "c:\ProgramData\Autodesk\Structural\Common Data\2014\Data\Other\norms.xls" , B column to be used in API , RDIM part - steel codes

 

 



Rafal Gaweda
Message 16 of 29
AbelSV78
in reply to: AbelSV78

Thank yo so much, this is what we are waiting for; is there another table with equvalences to IRDimMembParams*******??

Message 17 of 29
Rafal.Gaweda
in reply to: AbelSV78

No

 

EC3, E32 - steel eurocodes

the rest is rather clear

 

irdim.jpg



Rafal Gaweda
Message 18 of 29
AbelSV78
in reply to: AbelSV78

Ok, thank you so much again, I will try...

Message 19 of 29

I try to set Buckling Length for timber bar type using Eurocode 5 (RDimMembParamsE52 )
It works for steel bar type, but I don't understand why it doesn't work for wood bar type.
Have you any ideas to solve this problem?

I see the same problem with the definition of deflection limit and nodes displacement limite (ULS).

Others parameters like buckling coefficient work very well.

(I use Robot 2012)

Best regards,

Charles THIERRY DE VILLE D'AVRAY
villedavray_charles@yahoo.fr

(You can send me an email at this adress)

---------------------Here is the code I try to use----------------------

Dim Robot As RobotOM.IRobotApplication = Rob

'Création d'un nouveau type de barre
Dim RLabel2 As IRobotLabel = Robot.Project.Structure.Labels.CreateLike(IRobotLabelType.I_LT_MEMBER_TYPE, NomTypeBarreBois, "Barre bois")
Dim RdimLabelData As IRDimMembDefData = RLabel2.Data
Dim RDimMembParams As IRDimMembParamsE52 = RdimLabelData.CodeParams
RdimLabelData.Type = IRDimMembDefType.I_DMDT_USER

'Définir les longueurs de flambement autour de l'axe Y
RdimLabelData.SetLengthYZUV(IRDimMembDefLengthDataType.I_DMDLDT_LENGTH_Y, 255)
'Définir les longueurs de flambement autour de l'axe Z
RdimLabelData.SetLengthYZUV(IRDimMembDefLengthDataType.I_DMDLDT_LENGTH_Z, 355)

'Active ou désactive la verification de la fleche finale
RdimLabelData.SetDeflYZRelLimit(IRDimMembDefDeflDataType.I_DMDDDT_DEFL_Y, FlecheFinaleY)
RdimLabelData.SetDeflYZRelLimit(IRDimMembDefDeflDataType.I_DMDDDT_DEFL_Z, FlecheFinaleZ)

'Définit la flêche due aux charges variables
RdimLabelData.SetDeflYZRelLimit(IRDimMembDefDeflDataType.I_DMDDDT_DEFL_Y, FlecheRelativeY)
RdimLabelData.SetDeflYZRelLimit(IRDimMembDefDeflDataType.I_DMDDDT_DEFL_Z, FlecheRelativeZ)

'Définit le deplacement des noeuds maxi
'RdimLabelData.SetDisplXYRelLimit(IRDimMembDefDispDataType.I_DMDDDT_DISP_X, depX)
'RdimLabelData.SetDisplXYRelLimit(IRDimMembDefDispDataType.I_DMDDDT_DISP_Y, depY)

'Affecte les paramètres au type de barre
RdimLabelData.CodeParams = RDimMembParams

'Enregistre le type de barre sous...
Robot.Project.Structure.Labels.StoreWithName(RLabel2, NomTypeBarreBois)

Best Regards,
Charles THIERRY DE VILLE D'AVRAY
villedavray_charles@yahoo.fr
Message 20 of 29

These parameters are implemented:

 

        Set RdimLabelData = RLabel.Data
        
        RdimLabelData.SetDeflYZRelLimit I_DMDDDT_DEFL_Y, 10
        RdimLabelData.SetDeflYZRelLimit I_DMDDDT_DEFL_Z, 20
        RdimLabelData.SetDeflectionYZ I_DMDDDT_DEFL_Y, 1
        RdimLabelData.SetDeflectionYZ I_DMDDDT_DEFL_Z, 1
        
        RdimLabelData.CantileverMode = 1
        
        RdimLabelData.SetDisplXYRelLimit I_DMDDDT_DISP_X, 30
        RdimLabelData.SetDisplXYRelLimit I_DMDDDT_DISP_Y, 40
        RdimLabelData.SetDisplacementXY I_DMDDDT_DISP_X, 1
        RdimLabelData.SetDisplacementXY I_DMDDDT_DISP_Y, 1

 



Rafal Gaweda

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