diff options
Diffstat (limited to 'Machine_Design_by_T_H_Wentzell/17-Shaft_Design.ipynb')
| -rw-r--r-- | Machine_Design_by_T_H_Wentzell/17-Shaft_Design.ipynb | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/Machine_Design_by_T_H_Wentzell/17-Shaft_Design.ipynb b/Machine_Design_by_T_H_Wentzell/17-Shaft_Design.ipynb new file mode 100644 index 0000000..05f685e --- /dev/null +++ b/Machine_Design_by_T_H_Wentzell/17-Shaft_Design.ipynb @@ -0,0 +1,200 @@ +{ +"cells": [ + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "# Chapter 17: Shaft Design" + ] + }, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 17.1: Design_Stresses_in_Shaft.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"clc;\n", +"clear;\n", +"mprintf('MACHINE DESIGN \n Timothy H. Wentzell, P.E. \n EXAMPLE-17.1 Page No.379\n');\n", +"hp=5;\n", +"n=1750;\n", +"T=63000*hp/n;\n", +"//Torsional stress in the shaft\n", +"D=0.75;\n", +"Z1=%pi*D^3/16;\n", +"Ss=T/Z1;\n", +"mprintf('\n Torsional stress in the shaft = %f lb/in^2.',Ss);\n", +"//Load at the gear pitch circle\n", +"Nt=40;\n", +"Pd=10;\n", +"Dp=Nt/Pd;\n", +"Ft=2*T/Dp;\n", +"mprintf('\n Load at gear pitch circle = %f lb.',Ft);\n", +"//Resultant force on the shaft\n", +"theta=20*%pi/180;\n", +"Fr=Ft/cos(theta);\n", +"mprintf('\n Resultant force = %f lb.',Fr);\n", +"//Maximum moment\n", +"L=15;\n", +"Mm=Fr*L/4;\n", +"mprintf('\n Maximum moment = %f in-lb.',Mm);\n", +"//Stress\n", +"D2=0.75;\n", +"Z2=%pi*D2^3/32;\n", +"Z2=round(Z2*1000)*10^-3;\n", +"S=Mm/Z2;\n", +"mprintf('\n Stress = %f lb/in^2.',S);\n", +"//Note-There is an error in the answer given in textbook" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 17.2: Combined_Stresses_in_Shaft.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"clc;\n", +"clear;\n", +"mprintf('MACHINE DESIGN \n Timothy H. Wentzell, P.E. \n EXAMPLE-17.2 Page No.383\n');\n", +"//Combined stress using the maximum shear stress theorem\n", +"Ss=2170;\n", +"S=8780;\n", +"Sr=sqrt(Ss^2+(S/2)^2);\n", +"mprintf('\n Combined stress = %f lb/in^2.',Sr);" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 17.3: Combined_Stress_Using_Maximum_Normal_Stress_Theory.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"clc;\n", +"clear;\n", +"mprintf('MACHINE DESIGN \n Timothy H. Wentzell, P.E. \n EXAMPLE-17.3 Page No.383\n');\n", +"//Combined stress using the maximum normal stress theory\n", +"Ss=2170;\n", +"S=8780;\n", +"Sr=S/2+sqrt(Ss^2+(S/2)^2);\n", +"mprintf('\n Combined stress = %f lb/in^2.',Sr);\n", +"//Note-There is an error in the answer given in textbook" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 17.4: Comparison_of_Stresses_to_Allowable_Values_and_Endurance_Limit.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"clc;\n", +"clear;\n", +"mprintf('MACHINE DESIGN \n Timothy H. Wentzell, P.E. \n EXAMPLE-17.4 Page No.385\n');\n", +"//Modifying factors for Sn\n", +"Su=88000;\n", +"Csize=0.85;\n", +"Csurface=0.88;\n", +"Ctype=1;\n", +"Sn=Csize*Csurface*Ctype*(0.5*Su);\n", +"Kt=2.3;\n", +"S=9300;\n", +"N=Sn/(Kt*S);\n", +"if N>2 then\n", +" mprintf('\n It would be an acceptable design.');\n", +"else\n", +" mprintf('\n N<2,So this is not a suitable design for long term use.');\n", +"end" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 17.5: Critical_Speed.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"clc;\n", +"clear;\n", +"mprintf('MACHINE DESIGN \n Timothy H. Wentzell, P.E. \n EXAMPLE-17.5 Page No.388\n');\n", +"//Deflection\n", +"D=0.75;\n", +"E=30*10^6;\n", +"L=15;\n", +"F=96;\n", +"I=%pi*D^4/64;\n", +"delta=F*L^4/(48*E*I);\n", +"delta=floor(100*delta)*10^-2;\n", +"Nc=188/sqrt(delta);\n", +"mprintf('\n Critical speed = %f rpm.',Nc);" + ] + } +], +"metadata": { + "kernelspec": { + "display_name": "Scilab", + "language": "scilab", + "name": "scilab" + }, + "language_info": { + "file_extension": ".sce", + "help_links": [ + { + "text": "MetaKernel Magics", + "url": "https://github.com/calysto/metakernel/blob/master/metakernel/magics/README.md" + } + ], + "mimetype": "text/x-octave", + "name": "scilab", + "version": "0.7.1" + } + }, + "nbformat": 4, + "nbformat_minor": 0 +} |