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Pol Grasland-Mongrain edited Simu disp maps.tex
almost 8 years ago
Commit id: e9ac5b6530234d88088937fea597d11647edd284
deletions | additions
diff --git a/Simu disp maps.tex b/Simu disp maps.tex
index 3068d49..26c889b 100644
--- a/Simu disp maps.tex
+++ b/Simu disp maps.tex
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To calculate the propagation of the displacement as a function of space and time, we modeled the ablative regime as a point force directed along the Z axis with a depth of 40 $\mu$m and a constant value from -2.5 to 2.5 mm. The magnitude of the force was stored in a matrix, $H_z^{abla}(y,z,t)$. Displacements along the Z axis are again equal to the convolution between $H_z^{abla}$ and $G_{zz}$ \cite{aki1980quantitative}:
\begin{equation}
G_{zz}(r,\theta,t) = \frac{\cos^2 \theta}{4\pi \rho c_p^2 r} \delta(t-\frac{r}{c_p}) + \frac{\sin^2 \theta}{4\pi \rho c_s^2 r} \delta(t-\frac{r}{c_s})
\label{eq:Gzz}
\end{equation}
\begin{equation} + \frac{3\cos^2 \theta-1}{4\pi \rho r^3} \int\limits_{r/c_p}^{r/c_s}{\tau \delta(t-\tau)d\tau}
\end{equation}
with the same notations as presented in equation \ref{eq:Gyz}.