Category Archives: Newton

Python code updates – 3DFrame-py

Posted on 03/11/2023 by dougaj4

Recent changes to how Python treats comparing a Numpy array to an empty list have resulted in some of my functions returning errors and I am in the process of updating them. Specifically, when an optional argument to a function … Continue reading →

Posted in Excel, Finite Element Analysis, Frame Analysis, Link to Python, Newton, NumPy and SciPy, PyXLL, UDFs | Tagged , , , , , , , , | 2 Comments

SectionProperties Release 3

Posted on 21/10/2023 by dougaj4

Robbie van Leeuwen’s SectionProperties program, (last featured here) has recently been updated to Release 3 with some major changes to the code, including: Full documentation can be found at: SectionProperties docs Changes to the code have required updates to my Excel … Continue reading →

Posted in Beam Bending, Concrete, Excel, Finite Element Analysis, Link to Python, Newton, PyXLL, UDFs | Tagged , , , | Leave a comment

Happy Birthday, Sydney Opera House

Posted on 20/10/2023 by dougaj4

The book “Developments in Structural Form” by Rowland Mainstone is a history of the development of structural design over thousands of years. The very first 20th Century building structure appearing in that book is the Sydney Opera House, which was … Continue reading →

Posted in Arch structures, Bach, Concrete, Newton | Tagged , , , | Leave a comment

Longitudinal force due to shear – update

Posted on 09/10/2023 by dougaj4

In the post RC Design Functions 9.03; compression strut angle adjustment I recommended that when finding the longitudinal force due to shear according to AS 5100.5 (Amendment 1), the effect of increased vertical shear reinforcement should be limited in accordance … Continue reading →

Posted in Concrete, Excel, Link to Python, Newton, PyXLL, UDFs, VBA | Tagged , , , , , , , , | 1 Comment

3DFrame-py update

Posted on 03/09/2023 by dougaj4

The Python 3DFrame spreadsheet has been updated to allow for analysis including torsional warping effects. The new spreadsheet and associated Python files can be downloaded from: 3DFrame-py.zip The download file includes four sample spreadsheets comparing analysis results with output from … Continue reading →

Posted in Beam Bending, Excel, Finite Element Analysis, Frame Analysis, Link to Python, Newton, PyXLL, Strand7 | Tagged , , , , , , , | 1 Comment