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Diffstat (limited to 'Machine_Design_by_U.C._Jindal/Ch13_2.ipynb')
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diff --git a/Machine_Design_by_U.C._Jindal/Ch13_2.ipynb b/Machine_Design_by_U.C._Jindal/Ch13_2.ipynb new file mode 100644 index 00000000..020a19d3 --- /dev/null +++ b/Machine_Design_by_U.C._Jindal/Ch13_2.ipynb @@ -0,0 +1,291 @@ +{ + "cells": [ + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "# Ch:13 Cotter and knuckle joints" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## exa 13-1 - Page 371" + ] + }, + { + "cell_type": "code", + "execution_count": 1, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + " d is 26 mm \n", + "\n", + " d1 is 32 mm \n", + "\n", + " d2 is 44 mm \n", + "\n", + " d3 is 64 mm \n", + "\n", + " d4 is 40 mm \n", + "\n", + " sigbc is 103.0 MPa \n" + ] + } + ], + "source": [ + "from math import sqrt, pi\n", + "F=25*10**3#\n", + "sigat=50#\n", + "Ta=40#\n", + "pa=80#\n", + "d=sqrt((4*F)/(pi*sigat))#\n", + "d=26#\n", + "t=d/4#\n", + "t=7#\n", + "d1=1.2*d#\n", + "d1=32#\n", + "pc=F/(d1*t)#\n", + "t=10#\n", + "c=0.75*d#\n", + "c=20#\n", + "d2=44#\n", + "tw=(d2-d1)/2#\n", + "b=F/(2*t*Ta)#\n", + "b=34#\n", + "a=0.5*d#\n", + "d3=(F/(pa*t))+d1#\n", + "d3=64#\n", + "e=F/(Ta*(d3-d1))#\n", + "d4=sqrt((F*4/(pi*pa))+d1**2)#\n", + "d4=40#\n", + "f=0.5*d#\n", + "sigbc=3*F*d3/(t*b**2*4)#\n", + "print \" d is %0.0f mm \"%(d)#\n", + "print \"\\n d1 is %0.0f mm \"%(d1)#\n", + "print \"\\n d2 is %0.0f mm \"%(d2)#\n", + "print \"\\n d3 is %0.0f mm \"%(d3)#\n", + "print \"\\n d4 is %0.0f mm \"%(d4)#\n", + "print \"\\n sigbc is %0.1f MPa \"%(sigbc)#" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## exa 13-2 - Page 372" + ] + }, + { + "cell_type": "code", + "execution_count": 2, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + " d is 21 mm \n", + "\n", + " d1 is 28 mm \n", + "\n", + " t is 10 mm \n", + "\n", + " b is 31 mm \n", + "\n", + " d2 is 40 mm \n", + "\n", + " L is 138 mm \n" + ] + } + ], + "source": [ + "from math import sqrt, pi\n", + "P=40*10**3#\n", + "sigut=490#\n", + "FOS=4#\n", + "sigts=sigut/FOS#\n", + "sigcs=1.4*sigts#\n", + "sigs=0.8*sigts#\n", + "d=sqrt((4*P)/(pi*sigts))#\n", + "d=21#\n", + "sigcc=1.4*330/4#\n", + "Tc=0.8*330/4#\n", + "t=d/3#\n", + "b=P/(2*t*Tc)#\n", + "b=31#\n", + "t=10#\n", + "d1=28#\n", + "d2=40#\n", + "c=d/2#\n", + "c=15#\n", + "a=P/(2*(d2-d1)*98)#\n", + "a=20#\n", + "L=(2*a)+(2*b)+(2*c)+(2*3)#\n", + "print \" d is %0.0f mm \"%(d)#\n", + "print \"\\n d1 is %0.0f mm \"%(d1)#\n", + "print \"\\n t is %0.0f mm \"%(t)#\n", + "print \"\\n b is %0.0f mm \"%(b)#\n", + "print \"\\n d2 is %0.0f mm \"%(d2)#\n", + "print \"\\n L is %0.0f mm \"%(L)#" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## exa 13-3 - Page 372" + ] + }, + { + "cell_type": "code", + "execution_count": 3, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + " a is 33 mm \n", + "\n", + " t is 11 mm \n", + "\n", + " t1 is 16 mm \n", + "\n", + " b is 20 mm \n", + "\n", + " b1 is 25 mm \n", + "\n", + " l1 is 14 mm \n", + "\n", + " l2 is 14 mm \n", + "\n", + " l3 is 20 mm \n", + "\n", + " l4 is 11 mm \n", + "\n", + " sigcr is 110.0 MPa \n", + "\n", + " sigcr1 is 113.0 MPa \n" + ] + } + ], + "source": [ + "from math import sqrt, pi\n", + "P=40*10**3#\n", + "sigt=60#\n", + "sigc=125#\n", + "T=45#\n", + "a=sqrt(P*3/(2*sigt))#\n", + "a=33#\n", + "t=a/3#\n", + "b=P/(4.5*t*T)#\n", + "b=20#\n", + "b1=1.25*b#\n", + "t1=P*3/(4*a*sigt)#\n", + "t1=16#\n", + "l2=P/(2*2*T*t1)#\n", + "l2=14#\n", + "l1=P/(2*a*T)#\n", + "l1=14#\n", + "l3=(0.6*a)#\n", + "l3=20#\n", + "l4=11#\n", + "sigcr=P/(t*a)#\n", + "sigcr1=P/(2*t1*t)#\n", + "print \" a is %0.0f mm \"%(a)#\n", + "print \"\\n t is %0.0f mm \"%(t)#\n", + "print \"\\n t1 is %0.0f mm \"%(t1)#\n", + "print \"\\n b is %0.0f mm \"%(b)#\n", + "print \"\\n b1 is %0.0f mm \"%(b1)#\n", + "print \"\\n l1 is %0.0f mm \"%(l1)#\n", + "print \"\\n l2 is %0.0f mm \"%(l2)#\n", + "print \"\\n l3 is %0.0f mm \"%(l3)#\n", + "print \"\\n l4 is %0.0f mm \"%(l4)#\n", + "print \"\\n sigcr is %0.1f MPa \"%(sigcr)#\n", + "print \"\\n sigcr1 is %0.1f MPa \"%(sigcr1)#" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## exa 13-4 - Page 373" + ] + }, + { + "cell_type": "code", + "execution_count": 4, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + " d is 30 mm \n", + "\n", + " sigt is 52.1 MPa \n", + "\n", + " b is 36 mm \n" + ] + } + ], + "source": [ + "P=50*10**3#\n", + "sigp=380#\n", + "FOS=4#\n", + "sigca=80#\n", + "Ta=50#\n", + "sigta=sigp/FOS#\n", + "At=P/sigta#\n", + "d=30#\n", + "d1=1.5*d#\n", + "t=P/(sigca*d1)#\n", + "t=14#\n", + "A=(pi*(d1**2)/4)-(d1*t)#\n", + "#let tearing stress be sigt\n", + "sigt=P/A#\n", + "b=P/(2*t*Ta)#\n", + "b=36#\n", + "print \" d is %0.0f mm \"%(d)#\n", + "print \"\\n sigt is %0.1f MPa \"%(sigt)#\n", + "print \"\\n b is %0.0f mm \"%(b)#\n", + " \n", + "#The answer to tearing stress in bolt 'sigt' is calculated incorrectly in the book." + ] + } + ], + "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 +} |