RC Design Functions update

Following a comment here I have updated my RC Design Functions spreadsheet, which is available for free download (including full open-source code) from:

RC Design Functions7.zip

The main new features in the latest version are:

  • The existing optional “depth” argument has been extended so that an array of reinforcement areas can be entered, which will override the values in the main section data input.
  • My Goal Seek macro has been added, so that the reinforcement areas can be adjusted so that the tensile reinforcement stress, or section bending capacity, match a given value, and the process can be automated over a column of data of any length.
  • Examples of using the Goal Seek macro with the EStress and UMom functions have been added.

The screen shots below show samples from the new examples.  Further details of setting up the data to work with the Goal Seek macro will be given in the next post.

Data input for the Goal Seek macro, in conjunction with the EStress function:RCFunc7-1

Similar input with the UMom function:RCFunc7-2

Reinforcement stresses, and section bending capacities, after adjusting the reinforcement area with Goal Seek:RCFunc7-3

Posted in Arrays, Beam Bending, Concrete, Excel, Frame Analysis, Newton, UDFs, VBA | Tagged , , , , , , | 1 Comment

What-when-how …

… is a web site offering free tutorials on a wide range of subjects, including finite element analysis and VBA.

The basics of finite element analysis are covered by links from:

Computational Modelling (Finite Element Method)

with more advanced material covered at:

FEM for Plates and Shells (Finite Element Method) Part 1

FEM for 3D Solids (Finite Element Method) Part 1

Special Purpose Elements (Finite Element Method) Part 1

VBA starts at:

Getting Started with Excel Formulas and Functions

And for a full list of subjects see:

Topics

Posted in Finite Element Analysis, Newton, UDFs, VBA | Tagged , | Leave a comment

If it keeps on straining …

… concrete’s goin’ to break:

To find out what this has to do with predicting concrete deflections, book into the Concrete Institute seminar on “Finite Element Analysis of Concrete Structures”:

Finite Element Analysis of Concrete Structures – Software and Practice

When:
Wednesday, 18 May 2016
4:45 PM – 8:00 PM

Where:
Ryde-Eastwood Leagues Club
117 Ryedale Road , West Ryde NSW 2114

Posted in Bach, Beam Bending, Concrete, Newton | Tagged , , , | Leave a comment

Beetles …

… from the collections of the Oxford University Museum of Natural History, portraits by Levon Biss:

Beetles1
Beetles2 beetles3 Beetles4 Beetles5

More at:

Microsculpture

Posted in Bach, Newton | Tagged , | Leave a comment

xlwSciPy 1.7

Following recent posts on xlwings 0.7.1, dictionaries, and optional arguments and xlwings – dataframes and statistics, I have added the associated functions and examples to the xlwSciPy spreadsheet, and also updated it to xlwings 0.71.

The new spreadsheet can be downloaded from:

xlScipy-xlw.zip

including full open source code.

The spreadsheet requires Python, including xlwings, Numpy, Scipy and Pandas (all of which are free, and included in the Anaconda package).

Posted in Excel, Link to Python, Maths, Newton, NumPy and SciPy, Python Pandas, UDFs, VBA | Tagged , , , , , , , , | 4 Comments