Category Archives: Newton

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

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

Non-linear frame analysis; moment curvature and self-weight

Posted on 10/10/2016 by dougaj4

The Python/Fortran/Excel frame analysis program (previous version here) now has several new features added to the 2D-solver routines: The beam bending behaviour may now be specified with moment-curvature tables, rather than the linear-plastic behaviour required in the previous version. Beam … Continue reading →

Posted in Arch structures, Beam Bending, Concrete, Excel, Finite Element Analysis, Fortran, Frame Analysis, Link to dll, Link to Python, NumPy and SciPy, Strand7, VBA | Tagged , , , , , , , , , , , , , | 1 Comment

xlwSciPy 1.09 – update for xlwings 0.10 and Scipy 0.18.1

Posted on 02/10/2016 by dougaj4

The xlwSciPy spreadsheet (last presented here) has been updated for the latest version of xlwings and Scipy. The new spreadsheet can be downloaded from: xlScipy-xlw.zip including full open source code. The spreadsheet requires Python, including xlwings, Numpy, Scipy and Pandas … Continue reading →

Posted in Arrays, Curve fitting, Excel, Link to Python, Maths, NumPy and SciPy, Python Pandas, UDFs, VBA | Tagged , , , , , , , , | 2 Comments