如何绘制梁下方的挠度曲线？

Question

我想知道如何用虚线绘制简支梁下方的挠度曲线，并附带标签，y = ?如下所示：

我正在使用该structuralanalysis包。以下是我迄今为止创建的代码：

\documentclass[11 pt]{article}
\usepackage[english]{babel}
\usepackage[latin1]{inputenc}
\usepackage{ae,aecompl}
\usepackage[automark]{scrpage2}
\usepackage[pdftex]{graphicx}
\usepackage[margin=0.99in]{geometry}
\usepackage{xcolor}
\usepackage{listings}
\usepackage{structuralanalysis}
\usepackage{siunitx}
\begin{document}
\begin{center}
\begin{tikzpicture}
\draw[help lines, step =.45]
(0,-3.95) grid(9.115,3.325);
\scaling{.45};
\point{a}{0}{0};
\support{2}{a};
\point{b}{20}{0};
\support{2}{b};
\beam{2}{a}{b}[0][20];
\notation{5}{a}{b}[$\text{w}_{\text{f}} = 19.2 \ \text{kN/m}$][.5][above = 
15.5 mm];
\lineload{2}{a}{b}[1.20][1.20][0.0625];
\dimensioning{1}{a}{b}{ -1.125}[\textbf{$\ell = $}];
\notation{1}{a}{Gridline 4}[left = 2.5 mm];
\notation{1}{b}{Gridline 6}[right = 2.5 mm];
\end{tikzpicture}
\end{center}
\end{document}

任何帮助或提示都将不胜感激。

Answer 1

我认为该包已从structureanalysis重命名为stanli！

2019年TexLive展会

曲线绘制：

\internalforces{a}{b}{0}{0}[-1.5][black];

考试文件：

\documentclass{article}
\usepackage{amsmath} 
\usepackage{stanli}

\begin{document}

\begin{center}
\begin{tikzpicture}
\point{a}{0}{0};
\point{ab}{0}{-.2};
\point{b}{4}{0};
\point{c}{2}{.5};
\point{d}{2}{-2};
\beam{2}{a}{b}[0][3];
\beam{3}{c}{d}[0][4];
\internalforces{a}{b}{0}{0}[-1.5][black];
\notation {1}{a}{$x=0$}[left];
\notation {1}{ab}{$y=0$}[below left];
\notation {1}{b}{$x=L$}[right];
\notation {1}{d}{$\theta=0$}[right];
\draw [<->,very thick] (2,-.3)--(2,-1.2)node[left,midway]{$y=?$};
\end{tikzpicture}
\end{center}

\end{document}

输出：

Answer 2

显示的图像使用纯 TikZ 绘制很简单：

\documentclass{beamer}
\usepackage{tikz}
\usetikzlibrary{arrows.meta,
                quotes}

\begin{frame}[fragile]
\begin{center}
    \begin{tikzpicture}[
     block/.style = {align=left, yshift=-\baselineskip},
shorten <>/.style = {shorten <=#1, shorten >=#1},
                > = Straight Barb
                        ]
\draw   (-3,0) coordinate (a) -- (3,0) coordinate (b)
        (a) to [bend right=45] coordinate (c)   (b);
\node[block, left]  at (a)  {$x=0$\\    $y=0$\\ $\Phi=?$};
\node[block, right] at (b)  {$x=L$\\    $y=0$\\ $\Phi=?$};
\node[below right]  at (c)  {$\Phi=0$};
\draw[densely dash dot, shorten <>=-3mm]    (c) -- (0,0);
\draw[<->, semithick, shorten <>=1mm]       (c) to ["$y=?$"]    (0,0); 
    \end{tikzpicture}
\end{center}
\end{frame}
\end{document}

对于其他解决方案（使用您的代码），您应该提供 MWE（最小工作示例），一个小但完整的文档，我们可以按原样进行测试。

Answer 3

\documentclass[11 pt]{article}
\usepackage[english]{babel}
\usepackage{tikz}
\usetikzlibrary{arrows.meta, quotes}
\usepackage[latin1]{inputenc}
\usepackage{ae,aecompl}
\usepackage[automark]{scrpage2}
\usepackage[margin=0.99in]{geometry}
\usepackage{xcolor}
\usepackage{listings}
\usepackage{structuralanalysis}
\usepackage{siunitx}
\begin{document}
\begin{center}
\begin{tikzpicture}
\draw[help lines, step =.45]
(0,-3.95) grid(9.115,3.325);
\scaling{.45};
\point{a}{0}{0};
\support{2}{a};
\point{b}{20}{0};
\support{2}{b};
\point{c}{5}{0}
\beam{2}{a}{b}[0][20];
\notation{5}{a}{b}[$\text{w}_{\text{f}} = ? \ \text{kN/m}$][.5][above = 15.5 mm];
\lineload{2}{a}{b}[1.20][1.20][0.0625];
\dimensioning{1}{a}{b}{-1.5}[\textbf{$\ell = $}];
\notation{1}{a}{}[left = 2.5 mm];
\notation{1}{b}{}[right = 2.5 mm];
\draw [densely dashed,color=blue] (0,0) coordinate (a) -- (8.975,0) coordinate (b)
    (a) to [bend right=15] coordinate (c)   (b);
\draw[<->, semithick] (c) to ["${\Delta} = $"]    (4.5,0); 
\end{tikzpicture}
\end{center}
\end{document}