Tag Archives: deflections

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

ConbeamU Update; defined support deflections

Posted on 03/04/2015 by dougaj4

As promised in a recent post, I have updated the ConBeamU spreadsheet to allow defined deflections to be specified at any support. The new spreadsheet (including full open-source code), can be downloaded from ConBeamU.zip In addition to the support deflections the … Continue reading →

Posted in Arrays, Beam Bending, Excel, Frame Analysis, Newton, UDFs, VBA | Tagged , , , , , , , , , | 12 Comments

Reinforced Concrete Moment-Curvature – 1

Posted on 22/11/2009 by dougaj4

The flexural curvature of any beam composed of material with linear elastic behaviour, subject to a bending moment, M, is given by: C = M / EI where E is the elastic modulus of the beam, and I is its … Continue reading →

Posted in Beam Bending, Concrete, Excel, Newton, UDFs, VBA | Tagged , , , , | 5 Comments

Continuous beam with varying stiffness

Posted on 23/08/2009 by dougaj4

Previous Splinebeam post One of my aims in developing the splinebeam function is to carry out non-linear analysis of reinforced concrete beams, allowing for the greatly reduced flexural stiffness of reinforced concrete sections after cracking of the concrete.  To that … Continue reading →

Posted in Arrays, Beam Bending, Excel, Finite Element Analysis, Maths, Newton, UDFs, VBA | Tagged , , , , , , , | 3 Comments

Continuous beam with specified end conditions …

Posted on 09/08/2009 by dougaj4

… and/or support displacements. The previous post in this series derived cubic splines with specified end conditions; either a specified curvature or a specified end slope. I have adapted the splinebeam function to allow input of specified end conditions (either a … Continue reading →

Posted in Arrays, Beam Bending, Excel, Finite Element Analysis, Frame Analysis, Maths, Newton, UDFs, VBA | Tagged , , , , , , , | 1 Comment