Tag Archives: link to dll

Plane Strain FEA – Non linear staged analysis

Posted on 13/08/2016 by dougaj4

Continuing the recent series of posts featuring Fortran based FEA routines, the spreadsheet from the previous post has been revised: The spreadsheet allows for a staged analysis, with additional elements placed in layers for any number of construction stages. Temporary loads … Continue reading →

Posted in Beam Bending, Concrete, Excel, Finite Element Analysis, Fortran, Geotechnical Engineering, Link to dll, Link to Python, Newton, NumPy and SciPy, UDFs, VBA | Tagged , , , , , , , , , , , | 1 Comment

FEA slope analysis; effect of mesh size

Posted on 31/07/2016 by dougaj4

The last version of the FEA slope analysis spreadsheet (presented here) allows the slope shape and element density to be easily varied.  This post looks at the effect of varying the density from very coarse to fine, with constant soil … Continue reading →

Posted in Excel, Finite Element Analysis, Fortran, Geotechnical Engineering, Link to dll, Link to Python, Newton, VBA | Tagged , , , , , , , , , , | Leave a comment

Linking Excel to Fortran with ctypes; update

Posted on 27/07/2016 by dougaj4

In the previous post arrays were created in Python and passed to a Fortran dll as ctype pointers.  The data written to these arrays in the Fortran routines was then converted back to Python arrays with statements such as: nodedisp = npc.as_array(nodedisp).  … Continue reading →

Posted in Excel, Finite Element Analysis, Fortran, Link to dll, Link to Python, Newton, NumPy and SciPy, VBA | Tagged , , , , , , , , , , | 3 Comments

Linking Excel to Fortran, via xlwings, Python and ctypes

Posted on 17/07/2016 by dougaj4

Continuing the recent series on using Fortran code published in Programming the Finite Element Method (5th ed. John Wiley & Sons, I.M. Smith, D.V. Griffiths and L. Margetts (2014)), this post looks at linking Excel to Fortran code compiled as … Continue reading →

Posted in Excel, Finite Element Analysis, Fortran, Geotechnical Engineering, Link to dll, Link to Python, Newton, NumPy and SciPy, VBA | Tagged , , , , , , , , , , | 2 Comments

Installing dlls on 64 bit Windows

Posted on 28/03/2013 by dougaj4

Several of the spreadsheets available here include routines linking to compiled code written in C#, C++ or Fortran, which require the installation and registration of dll files.  The procedures for doing this are significantly different on machines with 64 bit … Continue reading →

Posted in Computing - general, Excel, Link to dll, VBA | Tagged , , , | 10 Comments