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# Category Archives: UDFs

## VBA routines for splitting and joining text

As mentioned in the previous post, I have written two short VBA routines to aid the process of splitting a column of text strings into separate columns, using either a space or any other chosen character as the delimiter. These … Continue reading

Posted in Excel, UDFs, VBA
Tagged Concat, Concatenation, Excel, JoinText, text to columns, TextJoin, UDF, VBA
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## Non-linear Frame Analysis – Scipy solvers

The frame analysis spreadsheet presented in the previous post has been updated to use the solvers included in the Scipy package. There is now an option to use either the Cholesky solver, or an iterative sparse solver. The main advantages of … Continue reading

Posted in Arrays, Beam Bending, Excel, Finite Element Analysis, Fortran, Frame Analysis, Link to dll, Link to Python, Newton, NumPy and SciPy, Strand7, UDFs, VBA
Tagged Cholesky factorisation, ctypes, Excel, FEA, Fortran, Frame Analysis, link to dll, Non-linear concrete, Programming the Finite Element Method, Python, SciPy, sparse solvers, VBA, xlwings
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## Non-linear Frame Analysis

Another example 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 provides a spreadsheet based frame analysis program including non-linear bending behaviour and … Continue reading

Posted in Beam Bending, Excel, Finite Element Analysis, Fortran, Frame Analysis, Link to dll, Link to Python, Newton, NumPy and SciPy, Strand7, UDFs, VBA
Tagged ctypes, Excel, FEA, Fortran, Frame Analysis, link to dll, Non-linear concrete, Programming the Finite Element Method, Python, VBA, xlwings
3 Comments

## ConbeamU 4.10

The ConbeamU spreadsheet has been updated to Version 4.10, to fix a problem with incorrect default parameters being used if the support stiffness columns had empty cells. The revised spreadsheet (including open-source code) can be downloaded from: ConbeamU.zip Applications in the … Continue reading

Posted in Beam Bending, Excel, Finite Element Analysis, Frame Analysis, Newton, Strand7, UDFs, VBA
Tagged ConBeamU, continuous beam analysis, Excel, Fixed End Moments, moving load, Restrained End Moments, Strand7, UDF, VBA
8 Comments

## Retaining wall analysis – FEA and hand calculations

I have used the PlateMC spreadsheet described in the previous post to compare the results of a finite element analysis of a retaining wall with a similar analysis using the commercial package Strand7, and a simple hand calculation using Coulomb … Continue reading

Posted in Excel, Finite Element Analysis, Fortran, Frame Analysis, Geotechnical Engineering, Link to dll, Link to Python, Newton, NumPy and SciPy, Strand7, UDFs, VBA
Tagged Coulomb, ctypes, Excel, FEA, Fortran, Ka, link to dll, plane strain, Programming the Finite Element Method, Python, soil-structure interaction, staged analysis, VBA, xlwings
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## Plane Strain FEA – Non linear staged analysis

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 ctypes, Excel, FEA, Fortran, link to dll, plane strain, Programming the Finite Element Method, Python, soil-structure interaction, staged analysis, VBA, xlwings
1 Comment

## PlateStress Update

The functions from the PlateStress spreadsheet (details here) will be incorporated in the FEA spreadsheets currently being presented. In the process of using these functions I made a couple of improvements: The required sequence of the Gauss Points numbers was clarified: … Continue reading

Posted in Beam Bending, Excel, Finite Element Analysis, Frame Analysis, Newton, Strand7, UDFs, VBA
Tagged Excel, Gauss Points, Mohr's Circle, Plate stresses, Strand7, UDF, VBA
1 Comment