Presque fini l'exo 2 sur le document

This commit is contained in:
Aleksander Taban 2026-04-15 18:56:13 +02:00
parent 2f1034f24d
commit b6dd6bc33a
No known key found for this signature in database
4 changed files with 70 additions and 4 deletions

View file

@ -35,15 +35,81 @@ Blabla
\end{equation*} \end{equation*}
\begin{equation} \begin{equation}
\Rightarrow\left\{\begin{aligned} \Rightarrow\boxed{\left\{\begin{aligned}
\dot{x_{1}} &= \frac{\partial^2 e_2}{\partial\zeta^2} \\ \dot{x_{1}} &= \frac{\partial^2 e_2}{\partial\zeta^2} \\
\dot{x_{2}} &= -\frac{\partial^2 e_1}{\partial\zeta^2}-q(\zeta,t) \dot{x_{2}} &= -\frac{\partial^2 e_1}{\partial\zeta^2}-q(\zeta,t)
\end{aligned}\right. \end{aligned}\right. }
\end{equation} \end{equation}
\subsection{Exercice 2} \subsection{Exercice 2}
\begin{align*}
\left\{\begin{aligned}
x_1 &\approx \phi^Tx_{1d}(t) \\
x_2 &\approx \phi^Tx_{2d}(t)
\end{aligned}\right. & &
\left\{\begin{aligned}
e_1 &\approx \phi^Te_{1d}(t) \\
e_2 &\approx \phi^Te_{2d}(t)
\end{aligned}\right.
\end{align*}
En utilisant la première ligne de l'équation 1, on trouve :
\begin{equation*}
\int\phi(\zeta)d\zeta\times\phi^T\dot{x_{1d}} = \int\phi(\zeta)d\zeta\times\frac{\partial^2}{\partial\zeta^2} = \ddot{\phi}(\zeta)^Te_{2*d}
\end{equation*}
\begin{equation}
\underbrace{\int_{0}^{L}\phi(\zeta)\phi(\zeta)^Td\zeta}_\text{E}\times\dot{x_{1d}} = \left(\int_{0}^{L}\phi(\zeta)\ddot{\phi}(\zeta)d\zeta\right)e_{2d}
\end{equation}
Intégration par partie (IPP) :
\begin{equation*}
\int_{0}^{L}u\cdot \dot{v} d\zeta = [u\cdot v]_{0}^{L} - \int_{0}^{L}\dot{u}\cdot v d\zeta
\end{equation*}
Dans notre cas :
\begin{align*}
\left\{\begin{aligned}
u&=\phi(\zeta) \\
\dot{v} &= \ddot{\phi}(\zeta)^T
\end{aligned}\right. &
\Rightarrow\left\{\begin{aligned}
\dot{u} &= \dot{\phi}(\zeta) \\
v &= \dot{\phi}(\zeta)^T
\end{aligned}\right.
\end{align*}
On applique plusieurs fois :
\begin{equation*}
\begin{aligned}
\int_{0}^{L}\phi(\zeta)\ddot{\phi}(\zeta)^T d\zeta &= [\phi(\zeta)\dot{\phi}(\zeta)^T]_{0}^{L} - \int_{0}^{L}\dot{\phi}(\zeta)\dot{\phi}(\zeta)^T d\zeta \\
&= \phi(L)\dot{\phi}(L)^T - \underbrace{\phi(0)\dot{\phi}(0)^T }_\text{=0} - \int_{0}^{L}\dot{\phi}(\zeta)\dot{\phi}(\zeta)^T d\zeta \\
&= \phi(L)\dot{\phi}(L)^T - \dot{\phi}(L)\phi(L)^T + \underbrace{\dot{\phi(0)}\phi(0)^T }_\text{=0} + \int_{0}^{L} \ddot{\phi}(\zeta)\phi(\zeta)^T d\zeta \\
&= \phi(L)\dot{\phi}(L)^T - \dot{\phi}(L)\phi(L)^T + \int_{0}^{L} \ddot{\phi}(\zeta)\phi(\zeta)^T d\zeta = D
\end{aligned}
\end{equation*}
On continue avec ça en remplaçant dans l'équation 2 :
\begin{equation*}
\Rightarrow \boxed{E\dot{x}_{1d} = De_{2d}}
\end{equation*}
Puis on a dans la deuxième ligne de l'équation 1 :
\begin{equation*}
\begin{aligned}
\phi^T(\zeta)\dot{x}_{2d} &= - \frac{\partial^2}{\partial\zeta^2} (\phi(\zeta)^T e_{1d}) - q(\zeta, t) \\
\int_{0}^{L} \phi^T(\zeta)d\zeta\times\dot{x}_{2d} &= -e_{1d}\int_{0}^{L}\phi(\zeta)\ddot{\phi}(\zeta)^T d\zeta - \underbrace{\int_{0}^{L}\phi(\zeta)q(\zeta,t)d\zeta}_{=F_{ext}}
\end{aligned}
\end{equation*}
\subsection{Exercice 3} \subsection{Exercice 3}

Binary file not shown.

View file

@ -3,7 +3,7 @@
\renewcommand{\familydefault}{\sfdefault} % Si vous voulez passer en Arial le texte \renewcommand{\familydefault}{\sfdefault} % Si vous voulez passer en Arial le texte
\newcommand{\titre}{Mini-Projet Automatique} \newcommand{\titre}{BE Commande Numérique}
\newcommand{\imagecouverture}{example-image} \newcommand{\imagecouverture}{example-image}
\newcommand{\firstcouverture}{ \newcommand{\firstcouverture}{
\parbox{\textwidth}{ \parbox{\textwidth}{

View file

@ -4,4 +4,4 @@
\newpage \newpage
\pagenumbering{arabic} % Numérotation en chiffres romains (i, ii, iii, ...) \pagenumbering{arabic} % Numérotation en chiffres romains (i, ii, iii, ...)
\setcounter{page}{1} \setcounter{page}{1}1