Category Archives: VBA

3D Frames, axes and stiffness matrices

Posted on 09/12/2016 by dougaj4

In the course of adding provision for spring end releases to the 3DFrame spreadsheet, I have also tidied up the code for generating the structure stiffness matrix, and added some documentation to the spreadsheet.  The revised spreadsheet (version 2.02) can … Continue reading →

Posted in Arrays, Beam Bending, Excel, Finite Element Analysis, Frame Analysis, Newton, Strand7, UDFs, VBA | Tagged , , , , , , , , | 10 Comments

3DFrame with spring releases

Posted on 02/12/2016 by dougaj4

Following the previous post I have added similar functionality to the 3DFrame spreadsheet.  The new file can be downloaded from: 3DFrame.zip As before, see Installing C# dll files, reminder for details of installing the supplied dll files, which provide much better … Continue reading →

Posted in Beam Bending, Excel, Finite Element Analysis, Frame Analysis, Newton, Strand7, VBA | Tagged , , , , | 8 Comments

Frame analysis with spring releases; 2D

Posted on 25/11/2016 by dougaj4

I have updated the Frame4 spreadsheet to allow a rotational spring stiffness to be specified for members with a rotational end release.  The new file can be downloaded from: Frame4.zip See Installing C# dll files, reminder for details of installing the … Continue reading →

Posted in Beam Bending, Excel, Finite Element Analysis, Frame Analysis, Link to dll, Newton, Strand7, VBA | Tagged , , , , | 1 Comment

Installing C# dll files, reminder

Posted on 04/11/2016 by dougaj4

Installing the Frame4 spreadsheet on a new computer I had some problems registering the dll files required for the compiled solver routines, so here is a reminder of the procedure: Copy the alglibnet2.dll and ALMatrixLib.dll files to the appropriate folder (see … Continue reading →

Posted in Excel, Frame Analysis, Link to dll, VBA | Tagged , , | 5 Comments

Nearest Lookup Function

Posted on 21/10/2016 by dougaj4

The Excel Lookup functions (including VLookup, HLookup and Match) all allow for an “exact” or “closest” match on numerical data, but the closest option has a number of problems: The data must be sorted For VLookup and HLookup the data … Continue reading →

Posted in Coordinate Geometry, Excel, Maths, UDFs, VBA | Tagged , , , , , , , , | 2 Comments