Category Archives: Frame Analysis

Using Redim and 3DFrame

Posted on August 31, 2018 by

I recently received a query about the 3DFrame spreadsheet failing to run.  The problem was that the code was trying to Redim an array that had not been previously created with a Dim statement.  This does not cause a problem … Continue reading →

Posted in Excel, Frame Analysis, VBA | Tagged , , , | 1 Comment

Beam geometric non-linear effects

Posted on April 21, 2018 by

A quick and convenient way to allow for the effect of deformations on the behaviour of beams and columns under axial load is to adjust the beam stiffness matrix, so that the calculated deflections are in equilibrium with the applied … Continue reading →

Posted in Beam Bending, Excel, Finite Element Analysis, Frame Analysis, Newton, UDFs, VBA | Tagged , , , , , , | 2 Comments

Frame Analysis Resources

Posted on April 17, 2018 by

I recently discovered: Matrix Structural Analysis, 2nd Edition, by McGuire, Gallagher, and Ziemian. which is available for free download: Description The aims of the first edition of Matrix Structural Analysis were to place proper emphasis on the methods of matrix … Continue reading →

Posted in Finite Element Analysis, Frame Analysis, Newton | Tagged , , | 1 Comment

Section Properties with MeshPY, including torsion and warping

Posted on December 9, 2017 by

I recently discovered robbie van leeuwen’s structural engineering blog, which has an open-source set of Python routines for calculation of section properties, including torsion and warping constants.  The program uses the MeshPY Library for generating the finite element meshes required … Continue reading →

Posted in Beam Bending, Concrete, Excel, Finite Element Analysis, Frame Analysis, Link to Python, Maths, Newton, Numerical integration, NumPy and SciPy, Strand7, UDFs, VBA, xlwings | Tagged , , , , , , , , | 7 Comments

Stepping through 3DFrame

Posted on September 16, 2017 by

Following a recent comment this post looks at the code for setting up the stiffness matrix for a 3D frame, and how to step through any selected part of the code. The general procedure for setting up a 3D stiffness matrix, … Continue reading →

Posted in Beam Bending, Excel, Finite Element Analysis, Frame Analysis, Newton, UDFs, VBA | Tagged , , , , , | Leave a comment

Using the Frame Analysis Spreadsheets

Posted on July 20, 2017 by

Following some recent questions in the comments, here are some answers: How can nodal moments be created? The current versions only allow for forces to be applied to beams, but any point load or moment applied at the start or … Continue reading →

Posted in Excel, Finite Element Analysis, Frame Analysis, Newton, VBA | Tagged , , , , | 2 Comments

Installing Frame4 and 3DFrame

Posted on July 17, 2017 by

Following a recent comment I have added a VBA only version to the download files of the frame analysis spreadsheets: 3DFrame.zip Frame4.zip The VBA versions should work on any version of Excel from 2007, with macros enabled, without any further installation. The … Continue reading →

Posted in AlgLib, Excel, Frame Analysis, Link to dll, Newton, VBA | Tagged , , , , , , | Leave a comment