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diff --git a/Machine_Design_by_T_H_Wentzell/6-Fasteners_and_Fastening_Methods.ipynb b/Machine_Design_by_T_H_Wentzell/6-Fasteners_and_Fastening_Methods.ipynb new file mode 100644 index 0000000..1f4d039 --- /dev/null +++ b/Machine_Design_by_T_H_Wentzell/6-Fasteners_and_Fastening_Methods.ipynb @@ -0,0 +1,154 @@ +{ +"cells": [ + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "# Chapter 6: Fasteners and Fastening Methods" + ] + }, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 6.1: Torquing_Method.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-6.1 Page No.120\n');\n", +"As=0.334; //[in^2] Tensile stress area (Table 6.1)\n", +"Sp=85000; //[lb/in^2] Proof strength (Table 6.3)\n", +"D=3/4; //[in] Nominal diameter of thread\n", +"Fi=0.85*As*Sp; //[lb] Desired intial preload\n", +"C=0.2; //[] Torque coefficient\n", +"T=C*D*Fi; //[in*lb] Torque\n", +"mprintf('\n The required torque is %f lb*in.',T);" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 6.2: Turn_of_Nut_Method.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-6.2 Page No.121\n');\n", +"L=5; //[in] Length of engagement\n", +"E=30*10^6; //[lb/in^2] Modulus of elasticity\n", +"As=0.334; //[in^2] Tensile stress area (Table 6.1)\n", +"Sp=85000; //[lb/in^2] Proof strength (Table 6.3)\n", +"Fi=0.85*As*Sp; //[lb] Desired intial preload\n", +"Delta=Fi*L/(As*E) //[in] Elongation\n", +"pitch=0.1; //[in] Pitch for 3/4 UNC\n", +"TA=Delta*360/pitch; //[Degree] Torque angle\n", +"mprintf('\n The angle of rotation needed is %f degree.',TA);" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 6.3: Elastic_Analysis_of_Bolted_Connections.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-6.3 Page No.122\n');\n", +"Alpha=6.5*10^-6; //[in/(in*F)] Thermal expansion coefficient (Appendix 8)\n", +"L=5; //[in] Length of engagement\n", +"Delta=0.01204; //[Degree] Elongation\n", +"DT=Delta/(Alpha*L); //[F] The temperature we would need to heat this bolt above the sevice temperature\n", +"mprintf('\n The temperature we would need to heat this bolt above the sevice temperature is %f F.',DT);" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 6.4: Elastic_Analysis_of_Bolted_Connections.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-6.4 Page No.124\n');\n", +"Dp=20; //[in] Pressure vessel head diameter\n", +"Ds=1.25; //[in] Stud diameter\n", +"Ls=6; //[in] Stud length\n", +"Af=50; //[in^2] Clamped area of flanges\n", +"E=30*10^6; //[lb/in^2] Modulus of elasticity\n", +"C=0.15; //[] Torque coefficient\n", +"Si=120000; //[lb/in^2] Proof strength (Table 6.3)\n", +"A=1.073; //[in^2] Tensile stress area (Table 6.1)\n", +"Fi=0.9*Si*A; //[lb] Desired intial load\n", +"T=C*Ds*Fi; //[lb*in] Torque\n", +"mprintf('\n1. The required torque is %f lb*in.',T);\n", +"Pp=500; //[lb/in^2] Pressure inside the pressure vessel\n", +"Ap=%pi*Dp^2/4; //[in^2] Pressure vessel head cross section area\n", +"Kb=A*E/Ls; //[lb/in] Stiffness per stud\n", +"Kf=Af*E/Ls; //[lb/in] Stiffness per flange\n", +"Fe=Pp*Ap; //[lb] Force on pressure vessel head\n", +"Ft=10*Fi+(10*Kb/(10*Kb+Kf))*Fe; //[lb] Total load on the bolt\n", +"mprintf('\n2. The total load on the bolt is %f lb.',Ft);" + ] + } +], +"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 +} |