added 14_2

book/_toc.yml

@@ -291,6 +291,7 @@ parts:
       - file: week_14/homework_2/copy4
         sections:
         - file: external/mechanics-BSc/book/stresses_displacements/cross-sectional/shear-force-centre
+    - file: week_14/session_2/intro
     - file: week_14/homework_3/intro
       sections:
       - file: external/mechanics-BSc/book/continuum/failure/failure

book/week_14/session_2/intro.ipynb

@@ -0,0 +1,84 @@
+{
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+    "```{index} Shear force centre; Class exercise\n",
+    "```\n",
+    "\n",
+    "(lesson14.2)=\n",
+    "# Lesson December 3rd\n",
+    "\n",
+    "During today's lesson you'll work on a complex exercise on the topic of the Shear force centre. Please ask your questions regarding the [homework](homework14.2) as well!\n",
+    "\n",
+    "## Exercise Shear force centre\n",
+    "\n",
+    "Given is the following structure:\n",
+    "\n",
+    "```{figure} intro_data/structure.svg\n",
+    ":align: center\n",
+    "```\n",
+    "\n",
+    "1. Find the relevant cross-sectional properties.\n",
+    "2. Find the maximum shear stress and its location.\n",
+    "3. Find the principal stresses at that point and their directions. Draw a square stress element to represent those stresses.\n",
+    "\n",
+    "````{admonition} Solution assignment 1\n",
+    ":class: tip, dropdown\n",
+    "\n",
+    "```{figure} intro_data/NC.svg\n",
+    ":align: center\n",
+    "```\n",
+    "\n",
+    "- $A = 9020 \\text{ mm}^2$\n",
+    "- $I_{zz} = 3.72 \\cdot 10^6 \\text{ mm}^4 $\n",
+    "- $I_t = 364 \\cdot 10^3 \\text{ mm}^4$\n",
+    "\n",
+    "````\n",
+    "\n",
+    "````{admonition} Solution assignment 2\n",
+    ":class: tip, dropdown\n",
+    "\n",
+    "In segment $\\text{AD}$ in grey crosses:\n",
+    "```{figure} intro_data/max.svg\n",
+    ":align: center\n",
+    "```\n",
+    "\n",
+    "$\\left| \\tau_{\\max} \\right| = 477.6 \\text{ MPa} $\n",
+    "\n",
+    "````\n",
+    "\n",
+    "````{admonition} Solution assignment 3\n",
+    ":class: tip, dropdown\n",
+    "\n",
+    "```{figure} intro_data/max2.svg\n",
+    ":align: center\n",
+    "```\n",
+    "\n",
+    "````\n"
+   ]
+  }
+ ],
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