SANGHUMCHO 조상흠's Communities Activities

Python with OpenSTAAD (GetSelectedBeams)

SANGHUMCHO 조상흠 — Wed, 07 Sep 2022 08:18:56 GMT

Hi,

I would like to extract beam ID list from STAAD UI using OpenSTAAD API.

I followed GetSelectedBeams() method rule and example on OpenSTAAD document, however, it is difficult to extract beam ID list.

Please inform me how to fix below code and extract correct beam list.

hereafter is my code:

import win32com.client

import numpy as np

os = win32com.client.GetActiveObject("StaadPro.OpenSTAAD")

NoOfBeams = os.Geometry.GetNoOfSelectedBeams

Sltd_Beams = np.zeros(NoOfBeams, dtype="i")

os.Geometry.GetSelectedBeams(Sltd_Beams, 0)

print(Sltd_Beams)

OpenSTAAD API Error Report : Get some information from existing .std file

SANGHUMCHO 조상흠 — Thu, 07 Oct 2021 23:40:42 GMT

Hi, I'm trying to build automatic modeling by usnig OpenSTAAD API.

However, I found (seems like to error) that doesn't work properly when I try to get some information.

For example, When using .Geometry.GetNodeCoordinates from existing STAAD modeling file, there is a unit discrepancy original modeling value with extracting value.

Length unit for original modeling file has been set as meter, however, extracting data seems like to inch.

(3m is approximately 118.1104 inch)

This bug? error may have been found on only CONNECTED EDITION. (V8i has worked properly)

Herebefore procedure is not using .OpenSTAADFile command, manually opened .std file

So, I also tried to use .OpenSTAADFile and .SetInputUnits for set units once more for recognizing .std file on developing enviornment just in case, however, results is same.

About constructing repeat load cases by using OpenSTAAD VBA macro

SANGHUMCHO 조상흠 — Wed, 12 May 2021 05:28:23 GMT

I would like to creating Repeat Load on STAAD from excel table of load combination by using OpenSTAAD API (VBA macro).

Primary Load cases had been set as below figure:

I have been trying to OpenSTAAD function called as "AddRepeatLoad" to create new repeat load cases by utilizing above primary load cases.

I followed that AddRepeatLoad function have two parameters (variant arrays) as per URL : https://communities.bentley.com/products/ram-staad/w/structural_analysis_and_design__wiki/11976/add-repeat-load

First, I tried to simple case.

For example, I'd like to create new repeat load (ID no. 15) which consist of no.1 * 1.2 + no.2 * 1.6 + no.3 * 1.4.

What I expected new repeat load is:

15 : 101(Repeat Load)

1.2DL + 1.6LL1 + 1.4LL2

Then, hereafter is my VBA code is:

>>> objOpenSTAAD.Load.CreateNewPrimaryLoadEx 101, 22

>>> Dim a As Variant

>>> Dim b As Variant

>>> a = Array(1, 2, 3)

>>> b = Array(1.2, 1.6, 1.4)

>>> objOpenSTAAD.Load.AddRepeatLoad a, b

However, this codes don't operate well that I expected.

Repeat Load content have no any factor and no any load element, moreover, it seems that location of repeat load case may be randomize as below figure. (I have tried a lot of times.)

How can use AddRepeatLoad function well?

Please inform me and thanks in advance.

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Tue, 01 Oct 2019 04:47:04 GMT

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Seismic load by applying notional load

SANGHUMCHO 조상흠 — Tue, 01 Oct 2019 04:46:32 GMT

Hello,

I am trying to use notional loads(ASCE7-05 Section 11.7.2) as seismic load that's why the building is assigned to Seismic Design Category A.

And I will use direct analysis method when designing the building as well.

I wonder there is no problem or not if I use notional load function in STAAD as both seismic load and direct analysis at once.

What I want to wondering is in detail as below:

For example, when using combination : 1.2D+L+E (D = dead load, L = live load, E = seismic load),

then, input a Notional load in STAAD = 1.2D * (0.002 + 0.01/1.2) + 1.6L * 0.002
(E = 0.01D)

(0.002 = notional load factor in direct analysis, 0.01 = equivalent later loads in Seismic Design Category A)