Author Archives: dougaj4

Alternative iterative solvers

Posted on 03/03/2026 by dougaj4

This post looks at alternative solutions to a problem posted on Quora: How can 2^x = 10x be solved? One of the alternatives requires a new function linking to Scipy that has been added to the pyScipy module, that can be downloaded … Continue reading →

Posted in Excel, Link to Python, Maths, Newton, NumPy and SciPy, PyXLL, UDFs, VBA | Tagged , , , , , , , , | Leave a comment

py_xlCBA – Supports with defined deflections

Posted on 29/01/2026 by dougaj4

As stated in the previous post, this post will cover the calculation of beam actions and displacements when one or more supports have a defined vertical displacement, using the pyCBA beam analysis package. The Python code has been updated since … Continue reading →

Posted in Beam Bending, Excel, Finite Element Analysis, Frame Analysis, Link to Python, Newton, PyXLL, Strand7, UDFs | Tagged , , , , , , , , , | Leave a comment

py_xlCBA update

Posted on 18/01/2026 by dougaj4

Following the previous post the py_xlCBA spreadsheet and associated code have been updated. The updated files, including open-source code, can be downloaded from: py_xlCBA.zip Note that the link in the previous post was downloading the wrong file, and has just … Continue reading →

Posted in Beam Bending, Excel, Finite Element Analysis, Frame Analysis, Link to Python, Newton, PyXLL, Strand7, UDFs | Tagged , , , , , , , , , , | 1 Comment

Calling PyCBA from Excel

Posted on 04/01/2026 by dougaj4

PyCBA is a Python based continuous beam analysis program. From the on-line docs: I have set up a spreadsheet based on py_Conbeam that converts the py_Conbeam input to PyCBA format, then runs the PyCBA analysis and returns the results to … Continue reading →

Posted in Beam Bending, Excel, Frame Analysis, Link to Python, Newton, NumPy and SciPy, PyXLL, Strand7, UDFs | Tagged , , , , , , , , , | 1 Comment

py_ConBeamU and Strand7 check updates-2

Posted on 30/12/2025 by dougaj4

Recent work with the py_ConBeamU spreadsheet found that it was returning incorrect results when the last support had a rotation spring restraint. In spite of the checks against Strand7 having 90 different support conditions, none of them included this one, … Continue reading →

Posted in Beam Bending, Excel, Link to Python, Newton, PyXLL, Strand7, UDFs | Tagged , , , , , , , | Leave a comment