Update to Glob_to_loc3 and Loc_to_glob3 functions

Following a comment here I have updated the Glob_to_loc3 and Loc_to_glob3 functions to deal with some problems when the local longitudinal axis is parallel to the global Y or Z axes.  The IP2 spreadsheet, including the revised functions, can be downloaded from:


The screen shots below show documentation for the functions, and an example of results with a beam parallel to the Z axis:

The documentation has been edited to clarify the difference between the axis type options:

The same example is used for both functions, with a beam parallel to the global Z axis, with the direction from Node 1 to Node 2 in the negative Z direction:


The function also has an option to return the rotation matrix, R0 (Out = 1):

The download file has the input for the Glob_to_loc function linked to the Glob_to_loc3 input, and the associated Gamma angle, to show that the results are consistent.  The input for these (or any other example functions) may of course be freely modified.

This entry was posted in Coordinate Geometry, Excel, Finite Element Analysis, Frame Analysis, Newton, UDFs, VBA and tagged , , , , , , . Bookmark the permalink.

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