| Date: | 20 Dec 2016 |
|---|---|
| Authors: | Jürgen Hackl |
| Contact: | hackl.j@gmx.at |
| Web site: | https://github.com/hackl/TikZ-StructuralAnalysis/ |
| Documentation: | https://ctan.org/pkg/stanli |
| Copyright: | This document has been placed in the public domain. |
| License: | GNU General Public Licence. |
| Version: | 2.0 |
At university it is always a very time consuming work to create new assignments, and tests; especially when those tasks include drawing graphics.
In the field of structural engineering those small structures are a key part for teaching. For this reason I developed, in cooperation with the Institute for Structural Analysis at the Graz University of Technology, a TikZ library for Structural Analysis.
There are two different types of libraries available: one for 2D structures
and one for 3D structures, both provided by the stanli.sty package.
In the following article only the 2D library
will be discussed, but the principles and methods are the same for 3D
structures, as shown in the example at the end of this document.
TikZ is a very powerful tool; however, unfortunately not everyone is used to this part of LaTeX. Therefore, in addition to the creation of the library the second goal was to keep the usage as simple as possible. So that:
- anyone can use this library without (deeper) knowledge in TikZ
- skilled users can easily modify and customise the code
- the principle of this library can be used for any other library
Clone this (or a forked version of this) repository.
$ cd ~ $ git clone https://github.com/hackl/TikZ-StructuralAnalysis.git
Put the .sty file in the right directory and add it to the LaTeX file like:
\usepackage{stanli}
The liberaries is also available via CTAN !
Like every TikZ graph, needs also this library the
\begin{tikzpicture}
...
\end{tikzpicture}
environment.
The library provides 10 different commands:
\point\beam\support\hinge\loador\lineloadand\temperature\internalforces\dimensioning\influenceline\notation\addon
For each element (command) are different options available. Obligatory options are marked with {curley brackets} and optional values are marked with [square brackets]. The first type is a must have criteria. In contrast, the optional input is not required to be entered.
An easy example is the following single force:
\load{type}{insertion point}[rotation][length or included angle][loaddistance];
More specific information about the elements and their options can be found in the manual. The manual is written in German, but section 1 provides a table with all elements and options; furthermore, the code is also given for each picture in the manual.
The easiest way to create a structure is the list above, starting with \point
and ending with \addon.
The following examples shall give a first impression how drawings can be generated. In the manual both examples are explained in detail.
By using the 2D library, the following graph can be created in a very short time:
\begin{tikzpicture}
\scaling{.65};
\point{a}{0}{1};
\point{b}{3}{1};
\point{c}{11}{3};
\point{d}{19}{1};
\point{e}{22}{1};
\point{f}{3}{0};
\point{g}{11}{-2};
\point{h}{19}{0};
\beam{1}{a}{b}[0][1];
\beam{1}{b}{c}[1][1];
\beam{1}{c}{d}[1][1];
\beam{1}{d}{e}[1][0];
\beam{1}{f}{b};
\beam{1}{d}{h};
\beam{2}{f}{g};
\beam{2}{g}{h};
\beam{2}{g}{c};
\support{1}{f};
\support{2}{h};
\hinge{1}{f};
\hinge{1}{h};
\hinge{1}{g};
\hinge{2}{c}[b][d];
\lineload{2}{a}{b}[1][1][.5];
\lineload{2}{b}{c};
\dimensioning{1}{a}{b}{-2.5}[$3.0$];
\dimensioning{1}{b}{c}{-2.5}[$8.0$];
\dimensioning{1}{c}{d}{-2.5}[$8.0$];
\dimensioning{1}{d}{e}{-2.5}[$3.0$];
\dimensioning{2}{f}{a}{-1}[$1.0$];
\dimensioning{2}{g}{f}{-1}[$2.0$];
\dimensioning{2}{a}{c}{-1}[$2.0$];
\influenceline{a}{e}{3}[.3];
\notation{1}{a}{$1$}[left];
\notation{1}{b}{$2$}[below right=2mm];
\notation{1}{c}{$3$};
\notation{1}{d}{$4$}[above];
\notation{1}{e}{$5$}[above];
\notation{1}{f}{$6$}[left=2mm];
\notation{1}{g}{$7$}[below=2mm];
\notation{1}{h}{$8$}[right=2mm];
\notation{4}{f}{g}[$S$];
\end{tikzpicture}
By using the 3D library, the following graph can be created in a very short time:
\setcoords{-25}{10}[1][1.2]
\setaxis{2}
%\showpoint
\begin{tikzpicture}[coords]
\dpoint{a}{0}{0}{0};
\dpoint{b}{3}{0}{0};
\dpoint{c}{6}{0}{0};
\dpoint{d}{9}{0}{0};
\dpoint{e}{12}{0}{0};
\dpoint{f}{0}{3}{0};
\dpoint{g}{3}{3}{0};
\dpoint{h}{6}{3}{0};
\dpoint{i}{9}{3}{0};
\dpoint{j}{12}{3}{0};
\daxis{1}{a};
\dbeam{1}{f}{b};
\dbeam{1}{b}{h};
\dbeam{1}{h}{d};
\dbeam{1}{d}{j};
\dbeam{3}{a}{e};
\dbeam{3}{f}{j};
\dbeam{3}{a}{f};
\dbeam{3}{b}{g};
\dbeam{3}{c}{h};
\dbeam{3}{d}{i};
\dbeam{3}{e}{j};
\dsupport{1}{b};
\dsupport{1}{h}[0][0];
\dsupport{1}{d}[0];
\dhinge{2}{b}[f][h][1];
\dhinge{2}{h}[b][d][1];
\dhinge{2}{d}[h][j][1];
\dlineload{5}{0}{f}{b}[.5][.5][.11];
\dlineload{5}{0}{b}{h}[.5][.5][.11];
\dlineload{5}{0}{h}{d}[.5][.5][.11];
\dlineload{5}{0}{d}{j}[.5][.5][.11];
\ddimensioning{xy}{f}{g}{4.5}[$3$\,m];
\ddimensioning{xy}{g}{h}{4.5}[$3$\,m];
\ddimensioning{xy}{h}{i}{4.5}[$3$\,m];
\ddimensioning{xy}{i}{j}{4.5}[$3$\,m];
\ddimensioning{yx}{e}{j}{13}[$3$\,m];
\dnotation{1}{f}{$q=10$\,kN/m}[above left=3mm];
\dnotation{1}{b}{$A$}[below left];
\dnotation{1}{h}{$C$}[right=2mm];
\dnotation{1}{d}{$B$}[below left];
\end{tikzpicture}
[Hackl2011a] Hackl, J.: Manual TikZ Library for Structural Analysis, Graz University of Technology, Institute for Structural Analysis, Graz, 2011.
[Hackl2011b] Hackl, J.: Manual TikZ 3D Library for Structural Analysis, Graz University of Technology, Institute for Structural Analysis, Graz, 2011.