Category Archives: AlgLib

Using Frame4Buckle with the Alglib solver

Posted on 01/03/2014 by dougaj4

The Frame4Buckle spreadsheet carries out a buckling analysis of a column or strut, which may be divided into any number of segments with varying cross section details, allowing the analysis of stepped or tapered members.  The spreadsheet includes a VBA … Continue reading →

Posted in AlgLib, Computing - general, Finite Element Analysis, Frame Analysis, Link to dll, Newton, VBA | Tagged , , , , , | 5 Comments

Rabbits, Foxes, and Lorenz Attractors

Posted on 23/02/2014 by dougaj4

Following comments here and here I have added two examples to the ODE Solver spreadsheet showing use of the ODE function to solve systems of differential equations with two or more coupled equations. The new version (including full open source … Continue reading →

Posted in AlgLib, Differential Equations, Excel, Maths, Newton, UDFs, VBA | Tagged , , , , , , , , | 2 Comments

New Release Alglib Library

Posted on 22/01/2013 by dougaj4

The Alglib Numerical Analysis Library has just been updated.  For full details of the changes see: http://www.alglib.net/arcnews.php#date_18_01_2013 , but the significant change for routines linking to my spreadsheets is that the sparse solver  has been significantly improved and now successfully solves problems … Continue reading →

Posted in AlgLib, Excel, Finite Element Analysis, Link to dll, Maths, Newton | Tagged , , , | Leave a comment

Frame4; now with added Alglib

Posted on 16/11/2012 by dougaj4

Edit 29 Nov 2012: I have now added an xls version to the download zip file.  This also has a much smaller example model, which will solve quickly using the VBA solver, so will be more useable for anyone having … Continue reading →

Posted in AlgLib, Beam Bending, Excel, Finite Element Analysis, Frame Analysis, Link to dll, Newton, UDFs, VBA | Tagged , , , , , | 24 Comments

Compiled Matrix Functions for Excel

Posted on 12/11/2012 by dougaj4

This is a follow on from the previous post, showing how the C# version of the ALGLIB maths library can be accessed from Excel, with very little additional coding.  The download file, Matrixdll-c#.zip includes compiled .dll and .tlb files which can be used … Continue reading →

Posted in AlgLib, Arrays, Excel, Finite Element Analysis, Frame Analysis, Link to dll, Maths, Newton, UDFs, VBA | Tagged , , , , , , , , , , , | 4 Comments