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diff --git a/Machine_Design_by_U_C_Jindal/9-THREADED_FASTENERS.ipynb b/Machine_Design_by_U_C_Jindal/9-THREADED_FASTENERS.ipynb new file mode 100644 index 0000000..fdaeb13 --- /dev/null +++ b/Machine_Design_by_U_C_Jindal/9-THREADED_FASTENERS.ipynb @@ -0,0 +1,447 @@ +{ +"cells": [ + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "# Chapter 9: THREADED FASTENERS" + ] + }, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 9.10: TF10.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"// sum 9-10\n", +"clc;\n", +"clear;\n", +"Pi=10*10^3;\n", +"sigyp=420;\n", +"FOS=2;\n", +"sige=sigyp/FOS;\n", +"K1=0.85;\n", +"K2=0.74;\n", +"K4=0.868;\n", +"SCF=2.4;\n", +"K3=1/SCF;\n", +"sige=sige*K1*K2*K3*K4;\n", +"Pe=10*10^3/3;\n", +"Pmax=Pi+Pe;\n", +"Pmin=Pi;\n", +"Pa=(Pmax-Pmin)/2;\n", +"Pm=(Pmax+Pmin)/2;\n", +"theta=atan(Pa/Pm);\n", +"siga=21.132;\n", +"At=Pa/siga;\n", +"At=84.2;\n", +"\n", +" // printing data in scilab o/p window\n", +" printf('At is %0.1f mm^2 ',At);\n", +" disp('M12 coarse-pitch bolt with 1.75 mm pitch is used');" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 9.11: TF11.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"// sum 9-11\n", +"clc;\n", +"clear;\n", +"Pi=15;\n", +"Pmax=15+3.75;\n", +"Pmin=15+1.25;\n", +"Pa=(Pmax-Pmin)/2;\n", +"Pm=(Pmax+Pmin)/2;\n", +"K1=0.85;\n", +"K2=0.7;\n", +"K4=0.897;\n", +"SCF=2.4;\n", +"K3=1/SCF;\n", +"sige=900/4*K1*K2*K3*K4;\n", +"siga=28.115;\n", +"At=Pa*10^3/siga;\n", +"At=58;\n", +"\n", +" // printing data in scilab o/p window\n", +" printf('At is %0.0f mm^2 ',At);" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 9.1: TF1.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"// sum 9-1\n", +"clc;\n", +"clear;\n", +"p1=2;\n", +"d=16;\n", +"dt1=d-(0.93825*p1);\n", +"At1=%pi*dt1^2/4;\n", +"p2=1.5;\n", +"d=16;\n", +"dt2=d-(0.93825*p2);\n", +"At2=%pi*dt2^2/4;\n", +"\n", +" // printing data in scilab o/p window\n", +" printf('At1 is %0.1f mm^2 ',At1);\n", +" printf('\n At2 is %0.1f mm^2 ',At2);" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 9.2: TF2.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"// sum 9-2\n", +"clc;\n", +"clear;\n", +"W=20*10^3;\n", +"n=4;\n", +"//Let the load on each bolt be W1\n", +"W1=W/n;\n", +"At=W1/80;\n", +"\n", +" // printing data in scilab o/p window\n", +" printf('At is %0.1f mm^2 ',At);" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 9.3: TF3.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"// sum 9-3\n", +"clc;\n", +"clear;\n", +"d=18;\n", +"p=2.5;\n", +"dr=d-(1.2268*p);\n", +"dm=(d+dr)/2;\n", +"alpha=atan(p/(%pi*dm));\n", +"theta=%pi*30/180;\n", +"u1=0.15;\n", +"u2=0.13;\n", +"x=(tan(alpha)+(u1/cos(theta)))/(1-(tan(alpha)*u1/cos(theta)));\n", +"K=dm*x/(2*d)+(0.625*u2);\n", +"\n", +" // printing data in scilab o/p window\n", +" printf('K is %0.5f ',K);" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 9.4: TF4.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"// sum 9-4\n", +"clc;\n", +"clear;\n", +"d=20;\n", +"t=4;\n", +"Lg=84;\n", +"Ad=%pi*d^2/4;\n", +"Eb=205*10^3;\n", +"Ed=105*10^3;\n", +"kb=Ad*Eb/Lg;\n", +"lg=80;\n", +"x=5*(lg+(0.5*d))/(lg+(2.5*d));\n", +"kp=%pi*Ed*d/(2*log(x));\n", +"At=245;\n", +"sigb=105;\n", +"Pe=20*10^3;\n", +"Pb=Pe*kb/(kb+kp);\n", +"sigad=Pb/At;\n", +"finalst=sigb+sigad;\n", +"\n", +" // printing data in scilab o/p window\n", +" printf('final stress is %0.2f N/mm^2 ',finalst);" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 9.5: TF5.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"// sum 9-5\n", +"clc;\n", +"clear;\n", +"Eb=207*10^3;\n", +"Ec=105*10^3;\n", +"sigp=650;\n", +"At=115;\n", +"Pi=0.75*sigp*At;\n", +"F=sigp*At;\n", +"//Let the additional load Fadd\n", +"Padd=F-Pi;\n", +"d=14;\n", +"Ad=%pi*d^2/4;\n", +"Lg=63;\n", +"kb=Ad*Eb/Lg;\n", +"lg=60;\n", +"x=5*(lg+(0.5*d))/(lg+(2.5*d));\n", +"km=%pi*Ec*d/(2*log(x));\n", +"C=kb/(kb+km);\n", +"Pe=Padd/C;\n", +"K=0.2;\n", +"Ti=Pi*K*d*10^-3;\n", +"\n", +" // printing data in scilab o/p window\n", +" printf('Ti is %0.2f Nm ',Ti);" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 9.6: TF6.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"// sum 9-6\n", +"clc;\n", +"clear;\n", +"d=20;\n", +"sigp=600;\n", +"At=245;\n", +"Pi=120*10^3;\n", +"Pe=30*10^3;\n", +"C=0.35;\n", +"Pb=C*Pe;\n", +"P=Pi+Pb;\n", +"sigi=Pi/At;\n", +"sigf=P/At;\n", +"K=0.18;\n", +"T=K*d*Pi*10^-3;\n", +"E1=sigi/sigp;\n", +"E2=sigf/sigp;\n", +"\n", +" // printing data in scilab o/p window\n", +" printf('sigi is %0.1f MPa ',sigi);\n", +" printf('\n sigi is %0.2f MPa ',sigf);\n", +" printf('\n T is %0.0f Nm ',T);\n", +" printf('\n E1 is %0.3f ',E1);\n", +" printf('\n E2 is %0.3f ',E2);\n", +" \n", +" //Value upto tenthth place is considered in the book for value of final stress in bolt, 'sigf'" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 9.7: TF7.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"// sum 9-7\n", +"// The sum sequence is numbered incorrectly in the book, from this sum ownwards.\n", +"clc;\n", +"clear;\n", +"p=2;\n", +"d=16;\n", +"dt=d-(0.938*p);\n", +"At=%pi*dt^2/4;\n", +"r=60*sqrt(2);\n", +"Td=1/(4*At);\n", +"Ta=120;\n", +"T=8.722*10^-3;\n", +"P=Ta/T*10^-3;\n", +"\n", +" // printing data in scilab o/p window\n", +" printf('P is %0.3f kN ',P);\n", +" \n", +" //Value upto hundredth place is considered in the book for value of permissible load, 'P'" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 9.8: TF8.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"// sum 9-8\n", +"clc;\n", +"clear;\n", +"sigyp=460;\n", +"FOS=2;\n", +"Ts=0.577*sigyp/FOS;\n", +"At=245;\n", +"r=100;\n", +"P=Ts*At/1.453*10^-3;\n", +"// Open prob9p8.txt file\n", +"fid = mopen('prob9p8.txt', 'w');\n", +"// error message\n", +" if (fid == -1)\n", +" error('cannot open file for writing');\n", +" end\n", +" \n", +" mfprintf(fid, 'Problem 9.8 Solution: \nThe eccentric load is %f N ',P);\n", +" \n", +" mclose(fid);\n", +" // printing data in scilab o/p window\n", +" printf('P is %0.3f kN ',P);\n", +" \n", +" //Value of thousandth place of eccentric load, 'P' is misprinted in the book. " + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 9.9: TF9.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"// sum 9-9\n", +"clc;\n", +"clear;\n", +"P=4*10^3;\n", +"e=200;\n", +"l1=150;\n", +"l2=550;\n", +"sigyp=420;\n", +"FOS=3;\n", +"siga=sigyp/3;\n", +"M=P*e;\n", +"At=12.5;\n", +"At=14.2;\n", +"\n", +" // printing data in scilab o/p window\n", +" printf('At is %0.1f mm^2 ',At);" + ] + } +], +"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 +} |