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Tag Archives: sparse solvers
Installing PyPardiso and speed of Scipy spsolve
I recently upgraded to Python 3.10, and because of some problems with my previous installation I decided to do a complete new installation using pip, which required installation of all the libraries needed for my various programs. For my linear … Continue reading
Posted in Excel, Finite Element Analysis, Frame Analysis, Link to Python, Newton, NumPy and SciPy, PyXLL, UDFs
Tagged Excel, PyPardiso, Python, PyXLL, SciPy, sparse matrices, sparse solvers
1 Comment
Making Finite Element Analysis go faster – Update and PyPardiso
The previous post on this topic looked at the performance of alternative Scipy sparse equation solvers. This post updates those results with the current Scipy version (1.7.1), with very different results. It also compares the Scipy solver performance with the … Continue reading
Posted in Arrays, Excel, Finite Element Analysis, Frame Analysis, Link to Python, Newton, NumPy and SciPy, PyXLL
Tagged Excel, PyPardiso, Python, PyXLL, SciPy, sparse matrices, sparse solvers
2 Comments
Non-linear frame analysis; moment curvature and self-weight
The Python/Fortran/Excel frame analysis program (previous version here) now has several new features added to the 2D-solver routines: The beam bending behaviour may now be specified with moment-curvature tables, rather than the linear-plastic behaviour required in the previous version. Beam … Continue reading
Posted in Arch structures, Beam Bending, Concrete, Excel, Finite Element Analysis, Fortran, Frame Analysis, Link to dll, Link to Python, NumPy and SciPy, Strand7, VBA
Tagged Excel, FEA, Fortran, Frame Analysis, link to dll, moment curvature, Non-linear concrete, Non-linear geometry, Programming the Finite Element Method, Python, SciPy, sparse solvers, VBA, xlwings
1 Comment
Non-linear Frame Analysis – Scipy solvers
The frame analysis spreadsheet presented in the previous post has been updated to use the solvers included in the Scipy package. There is now an option to use either the Cholesky solver, or an iterative sparse solver. The main advantages of … Continue reading
Posted in Arrays, Beam Bending, Excel, Finite Element Analysis, Fortran, Frame Analysis, Link to dll, Link to Python, Newton, NumPy and SciPy, Strand7, UDFs, VBA
Tagged Cholesky factorisation, ctypes, Excel, FEA, Fortran, Frame Analysis, link to dll, Non-linear concrete, Programming the Finite Element Method, Python, SciPy, sparse solvers, VBA, xlwings
1 Comment
xlSciPy 1.01
The xlSciPy spreadsheet, introduced here, has been updated with many new functions. The new version, including full open source code (VBA and Python) can be downloaded from: xlSciPy.zip The spreadsheet requires Python to be installed, including NumPy and SciPy. It … Continue reading
Posted in Excel, Link to Python, Maths, Newton, NumPy and SciPy, UDFs, VBA
Tagged Excel. VBA, ExcelPython, Fast Fourier Transform, Python, SciPy distance functions, sparse solvers, UDF
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