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Diffstat (limited to 'Mechanical_Metallurgy_by_George_E._Dieter/Chapter_8.ipynb')
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1 files changed, 0 insertions, 255 deletions
diff --git a/Mechanical_Metallurgy_by_George_E._Dieter/Chapter_8.ipynb b/Mechanical_Metallurgy_by_George_E._Dieter/Chapter_8.ipynb deleted file mode 100755 index 9609602d..00000000 --- a/Mechanical_Metallurgy_by_George_E._Dieter/Chapter_8.ipynb +++ /dev/null @@ -1,255 +0,0 @@ -{
- "cells": [
- {
- "cell_type": "markdown",
- "metadata": {},
- "source": [
- "# Chapter 8: The Tension Test"
- ]
- },
- {
- "cell_type": "markdown",
- "metadata": {
- "collapsed": true
- },
- "source": [
- "### Example 8.1, Standard properties of the material, Page No. 281"
- ]
- },
- {
- "cell_type": "code",
- "execution_count": 1,
- "metadata": {
- "collapsed": false
- },
- "outputs": [
- {
- "name": "stdout",
- "output_type": "stream",
- "text": [
- "\n",
- "Ultimate Tensile Strength = 92363.2 psi\n",
- "0.2 percent offset yield strength = 74889.1 psi\n",
- "Breaking Stress = 80880.2 psi\n",
- "Elongation = 26.5 percent\n",
- "Reduction of Area = 61.092 percent\n",
- "\n",
- "\n",
- "Note: Slight Computational Errors in book\n"
- ]
- }
- ],
- "source": [
- "\n",
- "from math import pi\n",
- "\n",
- "#variable declaration\n",
- "D=0.505;\n",
- "Lo=2;\n",
- "Lf=2.53;\n",
- "Py=15000;\n",
- "Pmax=18500;\n",
- "Pf=16200;\n",
- "D_f=0.315;\n",
- "\n",
- "#calculation\n",
- "A0=pi*D**2/4;\n",
- "Af=pi*D_f**2/4;\n",
- "s_u=Pmax/A0;\n",
- "s0=Py/A0;\n",
- "s_f=Pf/A0;\n",
- "e_f=(Lf-Lo)/Lo;\n",
- "q=(A0-Af)/A0;\n",
- "\n",
- "#result\n",
- "print('\\nUltimate Tensile Strength = %g psi\\n0.2 percent offset yield strength = %g psi\\nBreaking Stress = %g psi\\nElongation = %g percent\\nReduction of Area = %g percent\\n\\n\\nNote: Slight Computational Errors in book')%(s_u,s0,s_f,e_f*100,q*100);\n"
- ]
- },
- {
- "cell_type": "markdown",
- "metadata": {},
- "source": [
- "### Example 8.2, True Strain, Page No. 288"
- ]
- },
- {
- "cell_type": "code",
- "execution_count": 2,
- "metadata": {
- "collapsed": false
- },
- "outputs": [
- {
- "name": "stdout",
- "output_type": "stream",
- "text": [
- "\n",
- "True Strain to fracture using changes in length = 0.405465\n",
- "True Strain to fracture using changes in area = 0.405465\n",
- "\n",
- "\n",
- "\n",
- "For More ductile metals\n",
- "True Strain to fracture using changes in length = 0.729961\n",
- "True Strain to fracture using changes in diameter = 0.940007\n"
- ]
- }
- ],
- "source": [
- "\n",
- "from math import log\n",
- "\n",
- "#case 1\n",
- "#variable declaration\n",
- "Af=100.0;\n",
- "Lf1=60.0;\n",
- "A0=150.0;\n",
- "L01=40.0;\n",
- "Lf=83.0;\n",
- "L0=40.0;\n",
- "Df=8.0;\n",
- "D0=12.8;\n",
- "\n",
- "#calculation\n",
- "L1=float (Lf1/L01);\n",
- "A1=float (A0/Af);\n",
- "ef11=log(L1);\n",
- "ef21=log(A1);\n",
- "L2=(Lf/L0);\n",
- "D2=D0/Df;5\n",
- "ef12=log(L2);\n",
- "ef22=2*log(D2);\n",
- "\n",
- "#result\n",
- "print('\\nTrue Strain to fracture using changes in length = %g\\nTrue Strain to fracture using changes in area = %g')%(ef11,ef21);\n",
- "print('\\n\\n\\nFor More ductile metals\\nTrue Strain to fracture using changes in length = %g\\nTrue Strain to fracture using changes in diameter = %g')%(ef12,ef22);\n"
- ]
- },
- {
- "cell_type": "markdown",
- "metadata": {},
- "source": [
- "### Example 8.3, Ultimate Tensile Strength, Page No. 290"
- ]
- },
- {
- "cell_type": "code",
- "execution_count": 3,
- "metadata": {
- "collapsed": false
- },
- "outputs": [
- {
- "name": "stdout",
- "output_type": "stream",
- "text": [
- "Ultimate Tensile Strength = 99729.2 psi\n"
- ]
- }
- ],
- "source": [
- "\n",
- "\n",
- "from math import exp\n",
- "\n",
- "#variable declaration\n",
- "def sigma(e):\n",
- " return 200000*e**0.33;\n",
- "E_u=0.33;\n",
- "\n",
- "#calculation\n",
- "sigma_u=sigma(E_u);\n",
- "s_u=sigma_u/exp(E_u);\n",
- "\n",
- "#result\n",
- "print('Ultimate Tensile Strength = %g psi')%(s_u);"
- ]
- },
- {
- "cell_type": "markdown",
- "metadata": {},
- "source": [
- "### Example 8.4, Effect of Strain Rate, Page No. 298"
- ]
- },
- {
- "cell_type": "code",
- "execution_count": 4,
- "metadata": {
- "collapsed": false
- },
- "outputs": [
- {
- "name": "stdout",
- "output_type": "stream",
- "text": [
- "\n",
- "At 70deg F\n",
- "\n",
- "sigma_a = 10.2 ksi\n",
- "sigma_b = 13.8229 ksi\n",
- "sigma_b/sigma_a = 1.35519\n",
- "\n",
- "\n",
- "\n",
- "At 825deg F\n",
- "\n",
- "sigma_a = 2.1 ksi\n",
- "sigma_b = 5.54906 ksi\n",
- "sigma_b/sigma_a = 2.64241\n",
- "\n"
- ]
- }
- ],
- "source": [
- "\n",
- "\n",
- "#variable declaration\n",
- "C_70=10.2;\n",
- "C_825=2.1;\n",
- "m_70=0.066;\n",
- "m_825=0.211;\n",
- "e1=1;\n",
- "e2=100;\n",
- "\n",
- "#calculation 1\n",
- "print('\\nAt 70deg F\\n');\n",
- "sigma_a=C_70*e1**m_70;\n",
- "sigma_b=C_70*e2**m_70;\n",
- "\n",
- "#result 1\n",
- "print('sigma_a = %g ksi\\nsigma_b = %g ksi\\nsigma_b/sigma_a = %g\\n')%(sigma_a,sigma_b,sigma_b/sigma_a);\n",
- "\n",
- "\n",
- "#calculation 2\n",
- "print('\\n\\nAt 825deg F\\n');\n",
- "sigma_a=C_825*e1**m_825;\n",
- "sigma_b=C_825*e2**m_825;\n",
- "\n",
- "#result 2\n",
- "print('sigma_a = %g ksi\\nsigma_b = %g ksi\\nsigma_b/sigma_a = %g\\n')%(sigma_a,sigma_b,sigma_b/sigma_a);\n"
- ]
- }
- ],
- "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
-}
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