Author Archives: dougaj4

On long and short formulas and VBA

Posted on 17/07/2021 by dougaj4

A recent thread at Eng-Tips asked the following apparently simple question: Starting with a string consisting of numbers with a single central group of letters, how can this string be truncated at the end of the letters, so that for … Continue reading →

Posted in Excel, UDFs, VBA | Tagged , , , , , | Leave a comment

ULS Design Functions 2.13

Posted on 11/07/2021 by dougaj4

Update 17 May 2022: Following discussion on 10-11 May 22 the download file has been updated to version 2.15, fixing problems with the interaction diagram with a rectangular stress block under high axial loads. I have uploaded another update to … Continue reading →

Posted in Concrete, Excel, Newton, UDFs, VBA | Tagged , , , , , , , , | 25 Comments

… and something a bit more recent

Posted on 08/07/2021 by dougaj4

Castlereagh Connection A young band from Coonamble aged 11-13, they’ve been performing together for over 4 years 11 July 21: For some reason the Facebook video link isn’t working any more, so here is another one from Youtube:

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Imagine …

Posted on 05/07/2021 by dougaj4

was recorded 50 years ago …

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Making Finite Element Analysis go faster …

Posted on 27/06/2021 by dougaj4

… with Numba and Scipy sparse matrix functions. As promised in the previous post in this series, I will be looking at speeding up the formation and solving of matrix functions for the analysis of structural frames, using Excel and … Continue reading →

Posted in Arrays, Excel, Finite Element Analysis, Frame Analysis, Link to Python, NumPy and SciPy, PyXLL | Tagged , , , , , , , , | 4 Comments