Author Archives: dougaj4

Making non-linear FEA with Excel go (much) faster

Posted on 30/06/2016 by dougaj4

The spreadsheet presented in the previous post takes about 90 seconds to complete (with the iteration limit set at 500) on my computer, and is much slower on some other systems.  The VBA code that does all the hard work is based … Continue reading →

Posted in Computing - general, Excel, Finite Element Analysis, Fortran, Geotechnical Engineering, VBA | Tagged , , , , , , , | 3 Comments

2D non-linear FEA with Excel

Posted on 23/06/2016 by dougaj4

This blog has many posts on analysis of 2D and 3D frame structures in Excel (see Frame Analysis Downloads), but this is the first on performing finite element analysis of a 2D continuum.  The file PlateMC.xlsb contains a simple example using … Continue reading →

Posted in Computing - general, Excel, Finite Element Analysis, VBA | Tagged , , , , , | 4 Comments

Various routes to and from Nottamun Town

Posted on 10/06/2016 by dougaj4

Recently reading the words to Bob Dylan’s “A Hard Rain’s Gonna Fall” I was struck by the similarity to the English folk song “Nottamun Town”.  Searching the Internet I found very few references to this connection (although plenty to the … Continue reading →

Posted in Bach | Tagged , , , , , , , | 1 Comment

Automating Goal Seek with RC Design Functions

Posted on 29/05/2016 by dougaj4

As promised in the previous post, I will now look in more detail at the process for automating the Excel Goal Seek function with the RC Design Functions spreadsheet, to calculate reinforcement area or section depth for a range of bending … Continue reading →

Posted in Beam Bending, Concrete, Excel, Newton, UDFs, VBA | Tagged , , , , , | 10 Comments

RC Design Functions update

Posted on 21/05/2016 by dougaj4

Following a comment here I have updated my RC Design Functions spreadsheet, which is available for free download (including full open-source code) from: RC Design Functions7.zip The main new features in the latest version are: The existing optional “depth” argument has … Continue reading →

Posted in Arrays, Beam Bending, Concrete, Excel, Frame Analysis, Newton, UDFs, VBA | Tagged , , , , , , | 1 Comment