Category Archives: Strand7

3D Frame Update

Posted on April 29, 2021 by dougaj4

Following a comment here I have updated the code for the 3DFrame spreadsheet to calculate shear deflections correctly for sections with a different shear area for each transverse principal axis. The updated files can be downloaded from: 3DFrame.zip A note … Continue reading →

Posted in Excel, Frame Analysis, Newton, Strand7, UDFs, VBA | Tagged , , , , , | 2 Comments

Using Excel with Python and ctypes

Posted on October 5, 2020 by dougaj4

The Strand7 API provides an interface between the Strand7 Finite Element Analysis program and external software. It works with many different languages, including Python, which uses ctypes to transfer data to and from the API functions. It is essential that … Continue reading →

Posted in Beam Bending, Excel, Link to dll, Link to Python, NumPy and SciPy, PyXLL, Strand7, UDFs | Tagged , , , , , | Leave a comment

Dancing Pendulums Revisited

Posted on April 12, 2020 by dougaj4

I have previously posted on Dynamically Defined Dancing Pendulums, using the Strand7 FEA program to generate the motion of a series of pendulums of varying length.  I have now updated that video using the latest Beta version of the program (Rel … Continue reading →

Posted in Animation, Finite Element Analysis, Frame Analysis, Newton, Strand7 | Tagged , , , , , | Leave a comment

64 bit Excel and the Strand7 API

Posted on August 13, 2019 by dougaj4

Back in May 2017 I posted a sample spreadsheet using the Strand7 API to allow Excel to read and write Strand7 node data and results.  A comment noted at the time that the spreadsheet was not working with 64 bit … Continue reading →

Posted in Excel, Finite Element Analysis, Frame Analysis, Link to dll, Newton, Strand7 | Tagged , | Leave a comment

Section Properties with MeshPY, including torsion and warping

Posted on December 9, 2017 by dougaj4

I recently discovered robbie van leeuwen’s structural engineering blog, which has an open-source set of Python routines for calculation of section properties, including torsion and warping constants.  The program uses the MeshPY Library for generating the finite element meshes required … Continue reading →

Posted in Beam Bending, Concrete, Excel, Finite Element Analysis, Frame Analysis, Link to Python, Maths, Newton, Numerical integration, NumPy and SciPy, Strand7, UDFs, VBA, xlwings | Tagged , , , , , , , , | 7 Comments