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"cells": [
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"cell_type": "heading",
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"metadata": {},
"source": [
"Chapter 1:Simple Stresses and Strains"
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{
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"source": [
"Problem 1.1, Page no.9"
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"input": [
"import math\n",
"\n",
"#Given\n",
"#Variable declaration\n",
"L=150 #Length of the rod in cm\n",
"D=20 #Diameter of the rod in mm\n",
"P=20*1000 #Axial pull in N\n",
"E=2.0*(10**5) #Modulus of elasticity in N/(mm**2)\n",
"\n",
"#Calculation\n",
"A=(math.pi/4)*(D**2) #Area in sq.mm\n",
"sigma=P/A #Stress \n",
"e=sigma/E #Strain\n",
"dL=e*L #Elongation\n",
"\n",
"#Result\n",
"print \"sigma =\",round(sigma,3),\"N/mm^2\"\n",
"print \"Strain,e =\",round(e,6)\n",
"print \"Elongation,dL =\",round(dL,4),\"cm\"\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"sigma = 63.662 N/mm^2\n",
"Strain,e = 0.000318\n",
"Elongation,dL = 0.0477 cm\n"
]
}
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