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Category Archives: Strand7
Secondary moments in prestressed beams with FEA-2
Following the first post in this series, this post compares friction losses in prestressing cables as defined in the Australian Concrete Structures Code (AS 3600), compared with a cable modelled with contact elements in Strand7. The example used is based … Continue reading
Posted in Beam Bending, Excel, Finite Element Analysis, Frame Analysis, Newton, Strand7
Tagged contact elements, Excel, FEA, Friction losses, prestressing, sticking friction stiffness, Strand7
1 Comment
Secondary moments in prestressed beams with FEA
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
SectionProperties update update
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 Excel, Python, PyXLL, Section-Properties, Torsion
2 Comments
Publications
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 Austroads Bridge Conference, Concrete Conference, Publications
4 Comments
SectionProperties update
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 Excel, Python, PyXLL, Section-Properties, Torsion
1 Comment