Category Archives: Excel

More on RC design of circular sections

Posted on 23/12/2020 by dougaj4

Following the last post on this topic (Reinforced Concrete Design for Circular Sections to Eurocode 2) I have added provision for parabolic-linear concrete stress blocks to the ULS Design Functions spreadsheet. The Circu function in the RC Design Functions spreadsheet has … Continue reading →

Posted in Beam Bending, Concrete, Excel, Newton, UDFs, VBA | Tagged , , , , , , , , | 6 Comments

More Open Source FEA Code Links

Posted on 19/12/2020 by dougaj4

The book Nonlinear Finite Element Analysis of Solids and Structures 2nd Edition has an associated python code package called pyFEM, but a search for this code finds several others with the same or similar names: The pyFEM sites associated with the … Continue reading →

Posted in Finite Element Analysis, Frame Analysis, Link to Python, Newton | Tagged , , , | Leave a comment

Extracting text from an Internet table

Posted on 11/12/2020 by dougaj4

For use in my Units spreadsheet (Units4Excel) I want to extract the unit conversion values from the comprehensive Wikipedia unit conversion table. On Wikipedia the table looks like this: and when copied and pasted as Unicode text into Excel, like … Continue reading →

Posted in Excel, Newton, UDFs, VBA | Tagged , , , , , , , | 3 Comments

Tanh-Sinh Quadrature update

Posted on 26/11/2020 by dougaj4

Following some comments here Graeme Dennes and I have modified the start-up code for the Tanh-Sinh Quadrature spreadsheet to avoid problems opening the file when first downloaded, or copied to a new computer. The new file is located (as before) … Continue reading →

Posted in Excel, Maths, Newton, Numerical integration, UDFs, VBA | Tagged , , , | Leave a comment

Newton-Raphson and Brent’s Method – Solver examples

Posted on 08/11/2020 by dougaj4

I recently discovered the Computing Skillset site (via open-struct-engineer), which has good information on the basis and use of the Newton-Raphson method: The Newton Raphson method explained, details, pictures, python code Highly instructive examples for the Newton Raphson method I … Continue reading →

Posted in Excel, Maths, Newton, UDFs, VBA | Tagged , , , , , | 1 Comment