diff options
Diffstat (limited to 'Machine_Design_by_U.C._Jindal/Ch31.ipynb')
| -rwxr-xr-x | Machine_Design_by_U.C._Jindal/Ch31.ipynb | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/Machine_Design_by_U.C._Jindal/Ch31.ipynb b/Machine_Design_by_U.C._Jindal/Ch31.ipynb deleted file mode 100755 index 890e011d..00000000 --- a/Machine_Design_by_U.C._Jindal/Ch31.ipynb +++ /dev/null @@ -1,173 +0,0 @@ -{ - "metadata": { - "name": "", - "signature": "sha256:6ec60a366eb75f6b61dc10de0b002b97629539c44f0f706f948844442706e9bd" - }, - "nbformat": 3, - "nbformat_minor": 0, - "worksheets": [ - { - "cells": [ - { - "cell_type": "heading", - "level": 1, - "metadata": {}, - "source": [ - "Ch:31 Seals packing and gaskets" - ] - }, - { - "cell_type": "heading", - "level": 2, - "metadata": {}, - "source": [ - "exa 31-1 - Page 816" - ] - }, - { - "cell_type": "code", - "collapsed": false, - "input": [ - "from __future__ import division\n", - "from math import sqrt, pi, log\n", - "d=18#\n", - "lg=25+25#\n", - "Eb=210*10**3#\n", - "Ecl=90*10**3#\n", - "A=pi*d**2/4#\n", - "kb=A*Eb/lg#\n", - "x=(5*(lg+(0.5*d))/(lg+(2.5*d)))#\n", - "km=pi*Ecl*d/(2*log(x))#\n", - "C=kb/(kb+km)#\n", - "sigp=600#\n", - "At=192#\n", - "Pi=0.75*sigp*At#\n", - "F=200#\n", - "C=0.322#\n", - "Pb=F*C*10**3#\n", - "FOS=2#\n", - "W=At*sigp#\n", - "N=Pb*FOS/(W-Pi)#\n", - "print \"N is %0.2f \"%(N)#" - ], - "language": "python", - "metadata": {}, - "outputs": [ - { - "output_type": "stream", - "stream": "stdout", - "text": [ - "N is 4.47 \n" - ] - } - ], - "prompt_number": 1 - }, - { - "cell_type": "heading", - "level": 2, - "metadata": {}, - "source": [ - "exa 31-2 - Page 816" - ] - }, - { - "cell_type": "code", - "collapsed": false, - "input": [ - "d=16#\n", - "D=1.5*d#\n", - "t=20#\n", - "tg=4#\n", - "#Let Gasket diameter in compression zone be d1\n", - "d1=D+(2*t)+tg#\n", - "lg=40#\n", - "E=207*10**3#\n", - "kb=pi*d**2*E/(lg*4)#\n", - "Ecl=90*10**3#\n", - "x=(5*(lg+(0.5*d))/(lg+(2.5*d)))#\n", - "kp=pi*Ecl*d/(2*log(x))#\n", - "Ag=pi*(d1**2-d**2)/4#\n", - "Eg=480#\n", - "kg=Ag*Eg/tg#\n", - "km=kg*kp/(kg+kp)#\n", - "C=kb/(kb+km)#\n", - "At=157#\n", - "sigp=600#\n", - "Pi=0.75*At*sigp/2#\n", - "FOS=2#\n", - "Pf=At*sigp/FOS#\n", - "W=Pf-Pi#\n", - "P=W/C#\n", - "N=5#\n", - "F=P*N#\n", - "p=F*4/(pi*120**2)#\n", - "print \"p is %0.3f N/mm**2 \"%(p)#" - ], - "language": "python", - "metadata": {}, - "outputs": [ - { - "output_type": "stream", - "stream": "stdout", - "text": [ - "p is 6.922 N/mm**2 \n" - ] - } - ], - "prompt_number": 2 - }, - { - "cell_type": "heading", - "level": 2, - "metadata": {}, - "source": [ - "exa 31-3 - Page 817" - ] - }, - { - "cell_type": "code", - "collapsed": false, - "input": [ - "sigp=600#\n", - "FOS=3#\n", - "siga=sigp/FOS#\n", - "d=16#\n", - "D=1.5*d+60#\n", - "#Let Gasket diameter in compression zone be d1\n", - "d1=(300-160)/2#\n", - "#Let compressive stress in gasket for leak proof joint be sigl\n", - "sigl=12#\n", - "from numpy import mat\n", - "At=mat([[1, 157],[2 ,192], [3, 245]])\n", - "d=mat([[1 ,16],[2 ,18],[3, 20]])\n", - "\n", - "n=3#\n", - "Pi = range(0,n)\n", - "Pc = range(0,n)\n", - "for i in range(0,n):\n", - " Pi[i]=At[i,1]*d[i,1]\n", - " Pc[i]=3*pi*(d1**2-d[i,1]**2)\n", - " if (Pi[i]>=Pc[i]):\n", - " print \"The Design is safe\"\n", - "\n", - "print \"d is %0.0f mm \"%(d[i,1])#" - ], - "language": "python", - "metadata": {}, - "outputs": [ - { - "output_type": "stream", - "stream": "stdout", - "text": [ - "d is 20 mm \n" - ] - } - ], - "prompt_number": 3 - } - ], - "metadata": {} - } - ] -}
\ No newline at end of file |