Category Archives: Newton

Two new functions for IP.xls

Edit 8 Feb 2012: The functions described below have been superseded by new versions which are described at https://newtonexcelbach.wordpress.com/2009/08/18/finding-circle-centres-in-3d/.  That link also gives a description (with diagrams!) of how the functions work.  The download file for the new versions is … Continue reading

Posted in Excel, Maths, UDFs, VBA | Tagged , , , , , , | 8 Comments

Microsoft Present Lectures on Gravity …

… which seems fairly appropriate material for a blog called Newton Excel Bach. Link here Feynman Lectures on Physics Warning – requires Silverlight Here’s a screen shot:

Posted in Computing - general, Newton | Tagged , , | 1 Comment

More on cubic splines

Link to Cubic Spline Update The previous two posts used cubic splines with the “natural” end condition, that is with an end curvature of zero.  To apply the cubic spline to analysis of continuous beams with different end conditions we … Continue reading

Posted in Beam Bending, Excel, Frame Analysis, Maths, Newton, UDFs, VBA | Tagged , , , , | 10 Comments

Continuous beam analysis with cubic splines

The last example in the previous post illustrated the use of cubic splines to find the bending moments in a continuous beam subject to prescribed lateral displacements.  A similar technique can be used to find bending moments, shear forces, reactions, … Continue reading

Posted in Arrays, Beam Bending, Excel, Finite Element Analysis, Frame Analysis, Maths, Newton, UDFs, VBA | Tagged , , , , , , , | 9 Comments

Cubic Splines

Cubic splines are used to fit a smooth curve to a series of points with a piecewise series of cubic polynomial curves.  In addition to their use in interpolation, they are of particular interest to engineers because the spline is … Continue reading

Posted in Beam Bending, Excel, Newton, UDFs, VBA | Tagged , , , , | 73 Comments