Applies To
	Product(s):	STAAD.Pro
	Version(s):	All
	Environment:	N/A
	Area:	OpenSTAAD
	Subarea:	Load
	Original Author:	Bentley Technical Support Group, Shreyanka Bhattacharjee

 

 

 

 

 

 

 

 

Problem Description:

How to create wind definition and add height vs intensity data using OpenSTAAD function (VBA and python)

Solution:

You need use these two functions

• AddWindDefinition: Adds a Wind Definition.
• AddWindIntensity: Adds height vs intensity data to the wind definition 

Parameter of function AddWindDefinition:

[input] TypeNo: Wind Definition Type number ID

[input] TypeName: Wind Definition name

Parameter of function AddWindIntensity:

[Input] TypeNo: Wind Definition Type number ID

[Input] Intensity: Intensity value (Unit: Force/Length^2)

[Input] Height: Height value (Unit: Length)

Sample VBA Syntax:

Set objOpenStaad = GetObject(, "StaadPro.OpenSTAAD")

Dim TypeNo As Long

Dim TypeName As String

Dim intensity(1) As Double

Dim height(1) As Double

 

TypeNo = 1

TypeName = "WIND 1"

objOpenStaad.Load.AddWindDefinition TypeNo, TypeName

 

intensity(0) = 1.24

intensity(1) = 1.41

height(0) = 10

height(1) = 15

 

objOpenStaad.Load.AddWindIntensity TypeNo, intensity, height

Output:

python script:

from comtypes import automation
from comtypes import client
import ctypes
from comtypes import npsupport
import numpy as np
npsupport.enable()
os = client.GetActiveObject("StaadPro.OpenSTAAD")

os = client.GetActiveObject("StaadPro.OpenSTAAD")
load = os.Load

TypeNo=1
TypeName="WIND 1"
load._FlagAsMethod("AddWindDefinition")
load.AddWindDefinition (TypeNo, TypeName)

intensity=np.array([1.0,2.0])
height=np.array([10.0,15.0])

load._FlagAsMethod("AddWindIntensity")
load.AddWindIntensity (TypeNo, intensity, height)

varNodeNoArray=np.array([6,7,8,9])
ExposureFactor=1
load._FlagAsMethod("AddWindExposure")
load.AddWindExposure (TypeNo, ExposureFactor, varNodeNoArray)