generating Load cases by API

[Leader_Mohamed]

HI everyone,

I'm tyring to generate Load cases and Load Combinaions using API and it's the first time to make an API so here's some questions

 1- how to assign the Self Weight to the first load case that I define ? 

 2- how to get the nubmer of previous load cases to delete them then generate new ones ?

 3-how to define a Limit state combination like 1.12DL+1.28LL+1.28W ?

        Dim robot As New RobotApplication

        robot.Project.Structure.Cases.Delete(1)
        robot.Project.Structure.Cases.Delete(2)
        robot.Project.Structure.Cases.Delete(3)
        robot.Project.Structure.Cases.Delete(4)
        robot.Project.Structure.Cases.Delete(5)
        robot.Project.Structure.Cases.Delete(6)
        robot.Project.Structure.Cases.Delete(7)
        robot.Project.Structure.Cases.Delete(8)
        robot.Project.Structure.Cases.Delete(9)
        robot.Project.Structure.Cases.Delete(10)

        Dim caseSW As RobotSimpleCase = robot.Project.Structure.Cases.CreateSimple(1, "Self Wei ht", IRobotCaseNature.I_CN_PERMANENT, IRobotCaseAnalizeType.I_CAT_STATIC_LINEAR)
        Dim casefloorcover As RobotSimpleCase = robot.Project.Structure.Cases.CreateSimple(2, "floor cover", IRobotCaseNature.I_CN_PERMANENT, IRobotCaseAnalizeType.I_CAT_STATIC_LINEAR)
        Dim caseWallLoad As RobotSimpleCase = robot.Project.Structure.Cases.CreateSimple(3, "Wall Loads", IRobotCaseNature.I_CN_PERMANENT, IRobotCaseAnalizeType.I_CAT_STATIC_LINEAR)
        Dim caseLiveLoad As RobotSimpleCase = robot.Project.Structure.Cases.CreateSimple(4, "Live Load", IRobotCaseNature.I_CN_EXPLOATATION, IRobotCaseAnalizeType.I_CAT_STATIC_LINEAR)
        Dim CaseWxpos As RobotSimpleCase = robot.Project.Structure.Cases.CreateSimple(5, "wind X +", IRobotCaseNature.I_CN_WIND, IRobotCaseAnalizeType.I_CAT_STATIC_LINEAR)
        Dim caseWxNeg As RobotSimpleCase = robot.Project.Structure.Cases.CreateSimple(6, "wind X -", IRobotCaseNature.I_CN_WIND, IRobotCaseAnalizeType.I_CAT_STATIC_LINEAR)
        Dim caseWYpos As RobotSimpleCase = robot.Project.Structure.Cases.CreateSimple(7, "wind Y +", IRobotCaseNature.I_CN_WIND, IRobotCaseAnalizeType.I_CAT_STATIC_LINEAR)
        Dim caseWYneg As RobotSimpleCase = robot.Project.Structure.Cases.CreateSimple(8, "wind Y-", IRobotCaseNature.I_CN_WIND, IRobotCaseAnalizeType.I_CAT_STATIC_LINEAR)

 thanks in advance.

[Leader_Mohamed]

another question
is IRobotCaseNature.I_CN_EXPLOATATION means Live Load case ?

[Rafal.Gaweda]

is IRobotCaseNature.I_CN_EXPLOATATION means Live Load case ?

---

Yes.

[Rafal.Gaweda]

 3-how to define a Limit state combination like 1.12DL+1.28LL+1.28W ?

Examples:

http://forums.autodesk.com/t5/Robot-Structural-Analysis/Editing-load-cases-in-excel-API/td-p/3320573...

http://forums.autodesk.com/t5/Robot-Structural-Analysis/API-Buckling-combination/td-p/4331271

[Rafal.Gaweda]

 1- how to assign the Self Weight to the first load case that I define ? 

Example:

Dim RecordNew As RobotLoadRecord
                       
                Set RecordNew = caseSW.Records.Create(I_LRT_DEAD)
                
                RecordNew.SetValue I_DRV_COEFF, 1.0
                RecordNew.SetValue I_DRV_ENTIRE_STRUCTURE, 1
                RecordNew.SetValue I_DRV_Z, -1

[Rafal.Gaweda · Accepted solution]

 2- how to get the nubmer of previous load cases to delete them then generate new ones ?

Dim Rselection As RobotSelection
Set Rselection = robot.Project.Structure.Selections.CreatePredefined(I_PS_CASE_SIMPLE_CASES)
robot.Project.Structure.Cases.DeleteMany Rselection

[teixeiranh]

Hi Rafa! How do I delete all load records from a sort of load cases, keeping of course the load cases free of any record (via API)?

For example, I want to delete all load records from cases 2 to 5.

Thank you!

[1234eddie]

Hi @teixeiranh 

See these topic's/links

https://forums.autodesk.com/t5/robot-structural-analysis-forum/loads-are-duplicated-in-second-run-an... 

https://forum.dynamobim.com/t/loads-are-duplicated-in-second-run-and-keeps-adding-in-n-times-run-api... 

if you have still questions let me know.

Gr Edward

[Rafal.Gaweda]

Hi @teixeiranh 

Either You have to delete records in loop or delete load cases and create them again.