Removed duplicates

1 files changed, 0 insertions, 265 deletions

diff --git a/backup/Machine_Design_by_U.C._Jindal_version_backup/Ch26.ipynb b/backup/Machine_Design_by_U.C._Jindal_version_backup/Ch26.ipynb
deleted file mode 100755
index ccdf600d..00000000
--- a/backup/Machine_Design_by_U.C._Jindal_version_backup/Ch26.ipynb
+++ /dev/null
@@ -1,265 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:01c1cdfe5f44c7b9518d8e4611bcc7b558fa40f7241f67c334ff272a81b92cfe"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "Ch:26 Helical gears"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "exa 26-1 - Page 698"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from __future__ import division\n",
-      "from math import sqrt, pi, sin, cos, tan, atan\n",
-      "Zp=20#\n",
-      "Zg=50#\n",
-      "alphan=20*pi/180#\n",
-      "phi=15*pi/180#\n",
-      "mn=4#\n",
-      "m=mn/cos(phi)#\n",
-      "alpha=180/pi*atan(tan(alphan)/(cos(phi)))#\n",
-      "dp=Zp*m#\n",
-      "dg=Zg*m#\n",
-      "ha=4#\n",
-      "hd=1.25*mn#\n",
-      "#Let addendum circle dia of pinion be Pa\n",
-      "Pa=dp+(2*mn)#\n",
-      "#Let dedendum circle dia of pinion be Pd\n",
-      "Pd=dp-(2.5*mn)#\n",
-      "#Let addendum circle dia of gear be Ga\n",
-      "Ga=dg+(2*mn)#\n",
-      "#Let dedendum circle dia of gear be Gd\n",
-      "Gd=dg-(2.5*mn)#\n",
-      "b=pi*mn/sin(phi)#\n",
-      "print \"m is %0.2f mm  \"%(m)#\n",
-      "print \"\\nalpha is %0.3f deg  \"%(alpha)#\n",
-      "print \"\\nPa is %0.1f mm   \"%(Pa)#\n",
-      "print \"\\nPd is %0.1f mm   \"%(Pd)#\n",
-      "print \"\\nGa is %0.0f mm   \"%(Ga)#\n",
-      "print \"\\nGd is %0.0f mm   \"%(Gd)#\n",
-      "print \"\\nb is %0.2f mm   \"%(b)#"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m is 4.14 mm  \n",
-        "\n",
-        "alpha is 20.647 deg  \n",
-        "\n",
-        "Pa is 90.8 mm   \n",
-        "\n",
-        "Pd is 72.8 mm   \n",
-        "\n",
-        "Ga is 215 mm   \n",
-        "\n",
-        "Gd is 197 mm   \n",
-        "\n",
-        "b is 48.55 mm   \n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "exa 26-2 - Page 698"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "P=5000#\n",
-      "Zp=25#\n",
-      "Zg=50#\n",
-      "mn=4#\n",
-      "alphan=20*pi/180#\n",
-      "phi=20*pi/180#\n",
-      "N=1200#\n",
-      "m=mn/cos(phi)#\n",
-      "dp=Zp*m#\n",
-      "dg=Zg*m#\n",
-      "v=2*pi*N*dp/(60*2*1000)#\n",
-      "Pt=P/v#\n",
-      "Pa=Pt*tan(phi)#\n",
-      "Pr=Pt*tan(alphan)/cos(phi)#\n",
-      "print \"Pt is %0.2f N   \"%(Pt)#\n",
-      "print \"\\nPa is %0.1f N  \"%(Pa)#\n",
-      "print \"\\nPr is %0.2f N  \"%(Pr)#"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Pt is 747.78 N   \n",
-        "\n",
-        "Pa is 272.2 N  \n",
-        "\n",
-        "Pr is 289.64 N  \n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "exa 26-3 - Page 699"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "Zp=24#\n",
-      "Zg=72#\n",
-      "alphan=20*pi/180#\n",
-      "phi=24*pi/180#\n",
-      "N=720#\n",
-      "mn=5#\n",
-      "b=50#\n",
-      "sigut=600#\n",
-      "BHN=360#\n",
-      "Cs=1.4#\n",
-      "FOS=2#\n",
-      "sigb=sigut/3#\n",
-      "dp=mn*Zp/cos(phi)#\n",
-      "Zp=Zp/(cos(phi))**3#\n",
-      "Zg=Zg/(cos(phi))**3#\n",
-      "Y=0.358+((0.364-0.358)*1.48/2)#\n",
-      "Sb=b*mn*sigb*Y#\n",
-      "Q=(2*Zg)/(Zp+Zg)#\n",
-      "K=0.16*(BHN/100)**2#\n",
-      "Sw=b*dp*Q*K/(cos(phi)**2)#\n",
-      "v=2*pi*N*dp/(60*2*1000)#\n",
-      "Cv=5.6/(5.6+sqrt(v))#\n",
-      "Peff=Sb/FOS#\n",
-      "Pt=Peff*Cv/Cs#\n",
-      "P=Pt*v#\n",
-      "P=P*10**-3#\n",
-      "print \"P is %0.3f kW   \"%(P)#\n",
-      "#The difference in the value is due to rounding-off of the values."
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "P is 22.936 kW   \n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "exa 26-4 - Page 700"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "Zp=25#\n",
-      "Zg=100#\n",
-      "P=5000#\n",
-      "N=2000#\n",
-      "alphan=20*pi/180#\n",
-      "phi=15*pi/180#\n",
-      "sigut=660#\n",
-      "Cs=1.5#\n",
-      "FOS=1.8#\n",
-      "v=10#\n",
-      "Zp1=Zp/(cos(phi))**3#\n",
-      "Zg1=Zg/(cos(phi))**3#\n",
-      "Y=0.348+(0.74*0.004)#\n",
-      "sigb=sigut/3#\n",
-      "Cv=5.6/(5.6+sqrt(v))#\n",
-      "#Sb=FOS*Peff\n",
-      "mn=FOS*P*Cs*60*1000*2*cos(phi)/(2*pi*N*Cv*Zp*12*sigb*Y)#\n",
-      "mn=mn**(1/3)#\n",
-      "mn=2.5#\n",
-      "dp=mn*Zp/cos(phi)#\n",
-      "Q=(2*Zg)/(Zp+Zg)#\n",
-      "b=12*mn#\n",
-      "Sb=12*sigb*Y#\n",
-      "K=Sb*(cos(phi)**2)/(dp*Q*b)#\n",
-      "BHN=sqrt(K/0.16)*100#\n",
-      "dg=mn*Zg/cos(phi)#\n",
-      "phip=mn+(0.25*sqrt(dp))#\n",
-      "ep=16+(1.25*phip)#\n",
-      "phig=mn+(0.25*sqrt(dg))#\n",
-      "eg=16+(1.25*phig)#\n",
-      "e=ep+eg#\n",
-      "e=e*10**-3#\n",
-      "r1=dp/2#\n",
-      "r2=dg/2#\n",
-      "Pd=e*N*Zp1*b*r1*r2/(2530*sqrt(r1**2+r2**2))#\n",
-      "v=2*pi*N*dp/(60*2*1000)#\n",
-      "#Let tangential component be TC\n",
-      "TC=(Cs*1845/mn)+(Pd*cos(alphan)*cos(phi))#\n",
-      "\n",
-      "Sb=b*mn*sigb*Y#\n",
-      "print \"mn is %0.1f mm   \"%(mn)#\n",
-      "print \"\\nTC is %0.0f N  \"%(TC)#\n",
-      "print \"\\nSb is %0.1f N  \"%(Sb)#\n",
-      "#The difference in the value  of Sb is due to rounding-off of t"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "mn is 2.5 mm   \n",
-        "\n",
-        "TC is 1965 N  \n",
-        "\n",
-        "Sb is 5790.8 N  \n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file