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{
"cells": [
{
"cell_type": "markdown",
"metadata": {},
"source": [
"# Chapter 20: Sheet-Metal Forming"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"### Example 20.1, Deep Drawing, Page No. 672"
]
},
{
"cell_type": "code",
"execution_count": 1,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"\n",
"Limiting ratio = 1.98104\n"
]
}
],
"source": [
"from math import log\n",
"\n",
"#variable declaration\n",
"le=0.3;\n",
"wd=-0.16;\n",
"\n",
"#calcualtion\n",
"l_l0=1+le;\n",
"w_w0=1+wd;\n",
"R=log(1/w_w0)/log((w_w0)*l_l0);\n",
"\n",
"#result\n",
"print('\\nLimiting ratio = %g')%(R);"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"### Example 20.2, Forming Limit Criteria, Page No. 675"
]
},
{
"cell_type": "code",
"execution_count": 2,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"\n",
"Major Strain = 80 percent \n",
"Minor Strain = -20 percent\n"
]
}
],
"source": [
"#variable declaration\n",
"d=0.1;\n",
"mj_d=0.18;\n",
"mn_d=0.08;\n",
"\n",
"#calculation\n",
"e1=(mj_d-d)/d;\n",
"e2=(mn_d-d)/d;\n",
"\n",
"#result\n",
"print('\\nMajor Strain = %g percent \\nMinor Strain = %g percent')%(e1*100,e2*100);"
]
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 2",
"language": "python",
"name": "python2"
},
"language_info": {
"codemirror_mode": {
"name": "ipython",
"version": 2
},
"file_extension": ".py",
"mimetype": "text/x-python",
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython2",
"version": "2.7.9"
}
},
"nbformat": 4,
"nbformat_minor": 0
}
|
