Category Archives: Strand7

Secondary moments in prestressed beams with FEA

Posted on 09/01/2023 by dougaj4

Secondary (or hyperstatic) bending moments occur in prestressed beams that are continuous over internal supports, or have other redundant support conditions. Any eccentric prestress force will cause a beam to deflect, and if these deflections are restrained at internal supports, … Continue reading →

Posted in Beam Bending, Concrete, Excel, Finite Element Analysis, Frame Analysis, Newton, Strand7 | Tagged , , , , , , | 1 Comment

SectionProperties update update

Posted on 26/01/2022 by dougaj4

Since my previous post on the Python SectionProperties program it has been updated to Rel. 2.02, with some major changes: The mesh generation library has been changed from MeshPY to Triangle New functions have been added for: Steel sections Concrete … Continue reading →

Posted in Concrete, Excel, Finite Element Analysis, Link to Python, Newton, PyXLL, Strand7 | Tagged , , , , | 2 Comments

Publications

Posted on 23/01/2022 by dougaj4

I have recently updated my list of publications. Click on the “view full-size” icon in the bottom right corner for a full screen view, or click any link to download.

Posted in Concrete, Geotechnical Engineering, Newton, Strand7 | Tagged , , | 4 Comments

SectionProperties update

Posted on 16/01/2022 by dougaj4

In late 2017 I posted Section Properties with MeshPY, including torsion and warping which looked at an Excel front end for Robbie van Leeuwen’s SectionProperties program, which provides facilities for calculation of section properties of complex shapes, including torsion and warping constants. … Continue reading →

Posted in Charts, Excel, Finite Element Analysis, Link to Python, Newton, Numerical integration, NumPy and SciPy, PyXLL, Strand7 | Tagged , , , , | 1 Comment

Contour plots with Excel and Matplotlib – 2 

Posted on 30/12/2021 by dougaj4

The procedures discussed in the previous post required the contour data to be arranged on a regular rectangular grid, with the data points listed in a 2D array. As far as I know there is no built in alternative in … Continue reading →

Posted in Arrays, Charts, Excel, Finite Element Analysis, Link to Python, Newton, NumPy and SciPy, PyXLL, Strand7, UDFs | Tagged , , , , | 1 Comment