Category Archives: UDFs

Solving non-linear equations with two or more unknowns – 1

Posted on 30/09/2015 by dougaj4

Newton’s Method is a well known iterative solution for non-linear equations with one unknown.  That is, if some value Y depends on a variable X, then we can use Newton’s Method to find X for any given value of Y.  … Continue reading →

Posted in Beam Bending, Excel, Maths, Newton, UDFs, VBA | Tagged , , , , , , , | 2 Comments

IP2 and IP2_py

Posted on 11/09/2015 by dougaj4

The IP2 spreadsheet provides functions to calculate: Intersection points of 2D lines or polylines Intersection points of 2 circles, or a line and a circle Intersection circle of two spheres and intersection points of 3 spheres 3D centre point of … Continue reading →

Posted in Coordinate Geometry, Excel, Link to Python, Maths, Newton, UDFs, VBA | Tagged , , , , , , , , , , , | 5 Comments

Reinforced Concrete Moment Curvature – Development over time

Posted on 28/08/2015 by dougaj4

I recently noticed that in the RC Design Functions spreadsheet the TimeCurve function had stopped working.  The function calculates the development of reinforced concrete section curvature over time, and was previously presented in Reinforced Concrete Moment-Curvature – 3; Restrained Shrinkage and Creep and Reinforced … Continue reading →

Posted in Beam Bending, Concrete, Excel, Newton, UDFs, VBA | Tagged , , , , , , , , , | Leave a comment

ConBeamU 4.05 and ConBeampy 1.02

Posted on 15/07/2015 by dougaj4

The latest update of the two continuous beam spreadsheets can be downloaded from: ConBeamU.zip ConBeampy.zip The main changes are: A problem with point loads applied exactly at a support position has been corrected A function has been added to evaluate … Continue reading →

Posted in Beam Bending, Excel, Finite Element Analysis, Frame Analysis, Link to Python, Newton, UDFs, VBA | Tagged , , , , , | 1 Comment

New and updated links

Posted on 12/07/2015 by dougaj4

I have just updated my Blogroll, with 9 new links, and a couple of updates: Colin Caprani’s site is now back on-line I have updated the link to Jon Peltier’s blog dataprose.org was the source of many of the new links, … Continue reading →

Posted in Excel, UDFs, VBA | Tagged , , | Leave a comment