Category Archives: Geotechnical Engineering

Running exe files from Excel

Posted on June 30, 2016 by dougaj4

Following on from the previous post (running a compiled Fortran finite element analysis program from Excel), this post looks at the details of calling any command line routine from Excel, through VBA.  The important points that need to be addressed are: Writing … Continue reading →

Posted in Computing - general, Excel, Finite Element Analysis, Fortran, Geotechnical Engineering, Newton, VBA | Tagged , , , , , , , | 2 Comments

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

Posted on June 30, 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

Daily Download 7: Lateraly loaded pile analysis

Posted on September 23, 2012 by dougaj4

Today’s downloads (the last in the Engineering category) are related to the analysis of piles subject to lateral loads: LatPile – Analysis of Lateral Loads on Piles describes the principles of the analysis. Download file: http://interactiveds.com.au/software/LatPile.zip  P-Y Curve function describes function to … Continue reading →

Posted in Beam Bending, Excel, Geotechnical Engineering, Newton, UDFs, VBA | Tagged , , , , , , | 3 Comments

LatPilePY 1.04

Posted on July 4, 2012 by dougaj4

Following comments from Stephen on LatPile 1.03 I have modified the code so that if the specified Soil Properties range includes lines 8 and 9 (for specified effective depths at the top of each layer), but these lines are blank, the effective … Continue reading →

Posted in Excel, Geotechnical Engineering, Newton, UDFs, VBA | Tagged , , , , , | 12 Comments

The Switch Function (VBA and UDF)

Posted on January 27, 2012 by dougaj4

Switch is a VBA function that operates in a similar way to the Select Case statement.  The function arguments are a series of pairs of values, the first of each pair being an expression that can be evaluated as TRUE … Continue reading →

Posted in Excel, Geotechnical Engineering, Newton, UDFs, VBA | Tagged , , , , | 9 Comments