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Author Archives: dougaj4
3DFrame – 3D Frame analysis for Excel
I have now extended the Frame4 spreadsheet to deal with 3D frames. As well as making the necessary changes to the input ranges and stiffness matrix generation routines I have revised the Sparse solver routine, added a new compiled solver, and … Continue reading
Posted in Beam Bending, Excel, Finite Element Analysis, Frame Analysis, Link to dll, Newton, Strand7, VBA
Tagged 3D frame analysis, Excel, sparse solver, Spreadsheet frame analysis, VBA
21 Comments
Extracting a hyperlink
Excel does not have a function to extract the address from a cell containing a hyperlink. Here is a short UDF that will do the job: The original was a one-liner posted by Rick Rosthstein on Debra Dalgleish’s Contextures Blog. I … Continue reading
Defining beam orientation in 3D
The principal axes of a beam (or any 2D closed shape) are defined as the axes along which an applied load will not cause any deflection in the transverse direction. In mathematical terms, if the beam cross-section is defined in the … Continue reading
The angle between two vectors, in 2D or 3D
Finding the angle between two lines in 2D is easy, just find the angle of each line with the x-axis from the slope of the line and take the difference. In 3D it is not so obvious, but it can … Continue reading
Posted in Coordinate Geometry, Excel, Maths, Newton, UDFs, VBA
Tagged 3D angle, angle between two vectors, cosine rule, Excel, UDF, VBA, vectors
9 Comments
Tanh-Sinh Quadrature V4.0
Since last September Graeme Dennes has continued work on his Tanh-Sinh Quadrature spreadsheet, and has recently released Version 4.0, which can be downloaded from: Tanh-Sinh. As usual, the download includes full open-source code and extensive documentation. The new version includes routines … Continue reading
Posted in Excel, Maths, Newton, Numerical integration, UDFs, VBA
Tagged Excel, numerical integration, Tanh-Sinh method, UDF, VBA
6 Comments
Newton Excel Bach, not (just) an Excel Blog 