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added ipynb for lectures
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rcc02007 committed Mar 9, 2017
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1 change: 1 addition & 0 deletions README.md
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# Computational Mechanics
## ME 3255 Spring 2017
### Github page: [https://github.uconn.edu/rcc02007/ME3255S2017.git]
### Public (ipynb rendering)[https://github.com/cooperrc/ME3255S2017]

### Course Description
This course introduces students to scientific programming utilizing Matlab/Octave.
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366 changes: 366 additions & 0 deletions lecture_01/lecture_01.ipynb
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{
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{
"cell_type": "markdown",
"metadata": {},
"source": [
"# Freefall Model\n",
"## Octave solution (will run same on Matlab)"
]
},
{
"cell_type": "code",
"execution_count": 13,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"%plot --format svg"
]
},
{
"cell_type": "code",
"execution_count": 14,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"set (0, \"defaultaxesfontname\", \"Helvetica\")\n",
"set (0, \"defaultaxesfontsize\", 18)\n",
"set (0, \"defaulttextfontname\", \"Helvetica\")\n",
"set (0, \"defaulttextfontsize\", 18) \n",
"set (0, \"defaultlinelinewidth\", 4)"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"Define time from 0 to 12 seconds"
]
},
{
"cell_type": "code",
"execution_count": 15,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"t =\n",
"\n",
" 0\n",
" 2\n",
" 4\n",
" 6\n",
" 8\n",
" 10\n",
" 12\n",
"\n"
]
}
],
"source": [
"t=[0,2,4,6,8,10,12]'"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"Define constants and analytical solution (meters-kilogram-sec)"
]
},
{
"cell_type": "code",
"execution_count": 4,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"v_analytical =\n",
"\n",
" 0.00000\n",
" 18.61630\n",
" 32.45521\n",
" 40.64183\n",
" 44.84646\n",
" 46.84974\n",
" 47.77002\n",
"\n"
]
}
],
"source": [
"c=0.25; m=60; g=9.81; v_terminal=sqrt(m*g/c);\n",
"\n",
"v_analytical = v_terminal*tanh(g*t/v_terminal)"
]
},
{
"cell_type": "code",
"execution_count": 16,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"v_numerical =\n",
"\n",
" 0.00000\n",
" 19.62000\n",
" 36.03213\n",
" 44.83284\n",
" 47.70298\n",
" 48.35986\n",
" 48.49089\n",
"\n"
]
}
],
"source": [
"v_numerical=zeros(length(t),1);\n",
"for i=1:length(t)-1\n",
" v_numerical(i+1)=v_numerical(i)+(g-c/m*v_numerical(i)^2)*2;\n",
"end\n",
"v_numerical"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"Display time, velocity (analytical) and velocity (numerical)"
]
},
{
"cell_type": "code",
"execution_count": 12,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"time (s)|vel analytical (m/s)|vel numerical (m/s)\n",
"-----------------------------------------------\n",
" 0.0 | 0.00 | 0.00\n",
" 2.0 | 18.62 | 19.62\n",
" 4.0 | 32.46 | 36.03\n",
" 6.0 | 40.64 | 44.83\n",
" 8.0 | 44.85 | 47.70\n",
" 10.0 | 46.85 | 48.36\n",
" 12.0 | 47.77 | 48.49\n"
]
}
],
"source": [
"fprintf('time (s)|vel analytical (m/s)|vel numerical (m/s)\\n')\n",
"fprintf('-----------------------------------------------')\n",
"M=[t,v_analytical,v_numerical];\n",
"fprintf('%7.1f | %18.2f | %15.2f\\n',M(:,1:3)');"
]
},
{
"cell_type": "code",
"execution_count": 7,
"metadata": {
"collapsed": false
},
"outputs": [
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