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-{
- "cells": [
- {
- "cell_type": "markdown",
- "metadata": {},
- "source": [
- "# Ch:12 Welded joints"
- ]
- },
- {
- "cell_type": "markdown",
- "metadata": {},
- "source": [
- "## exa 12-1 - Page 347"
- ]
- },
- {
- "cell_type": "code",
- "execution_count": 1,
- "metadata": {
- "collapsed": false
- },
- "outputs": [
- {
- "name": "stdout",
- "output_type": "stream",
- "text": [
- "T is 73.7 MPa \n"
- ]
- }
- ],
- "source": [
- "h=8#\n",
- "F=100*10**3#\n",
- "t=0.707*h#\n",
- "A=4*60*t#\n",
- "T=F/A#\n",
- "print \"T is %0.1f MPa \"%(T)#"
- ]
- },
- {
- "cell_type": "markdown",
- "metadata": {},
- "source": [
- "## exa 12-2 - Page 347"
- ]
- },
- {
- "cell_type": "code",
- "execution_count": 2,
- "metadata": {
- "collapsed": false
- },
- "outputs": [
- {
- "name": "stdout",
- "output_type": "stream",
- "text": [
- "l is 639 mm \n"
- ]
- }
- ],
- "source": [
- "FOS=3#\n",
- "Ta=95/FOS#\n",
- "P=350*10**3#\n",
- "h=12.5#\n",
- "t=0.707*h#\n",
- "l=P/(2*t*Ta)#\n",
- "print \"l is %0.0f mm \"%(l)#"
- ]
- },
- {
- "cell_type": "markdown",
- "metadata": {},
- "source": [
- "## exa 12-3 - Page 348"
- ]
- },
- {
- "cell_type": "code",
- "execution_count": 3,
- "metadata": {
- "collapsed": false
- },
- "outputs": [
- {
- "name": "stdout",
- "output_type": "stream",
- "text": [
- "P is 81.446 kN \n"
- ]
- }
- ],
- "source": [
- "h=12#\n",
- "t=0.707*h#\n",
- "l=60#\n",
- "Ta=80#\n",
- "P=2*l*t*Ta#\n",
- "P=P*10**-3#\n",
- "print \"P is %0.3f kN \"%(P)#"
- ]
- },
- {
- "cell_type": "markdown",
- "metadata": {},
- "source": [
- "## exa 12-4 - Page 348"
- ]
- },
- {
- "cell_type": "code",
- "execution_count": 4,
- "metadata": {
- "collapsed": false
- },
- "outputs": [
- {
- "name": "stdout",
- "output_type": "stream",
- "text": [
- "h is 3 mm \n"
- ]
- }
- ],
- "source": [
- "from math import sin, pi, cos, sqrt\n",
- "P=6*10**3#\n",
- "e=150+(100/2)#\n",
- "T=P*e#\n",
- "A=200#\n",
- "Td=P/A#\n",
- "r=sqrt(2*50**2)#\n",
- "Ixx=2*(100*50**2)#\n",
- "Iyy=2*100**3/12#\n",
- "IG=Ixx+Iyy#\n",
- "Ts=r*T/IG#\n",
- "Tmax=sqrt((Ts*sin(45*pi/180))**2+(Td+(Ts*cos(45*pi/180)))**2)#\n",
- "Ta=80#\n",
- "t=Tmax/Ta#\n",
- "h=sqrt(2)*t#\n",
- "h=3#\n",
- "print \"h is %0.0f mm \"%(h)#"
- ]
- },
- {
- "cell_type": "markdown",
- "metadata": {},
- "source": [
- "## exa 12-5 - Page 349"
- ]
- },
- {
- "cell_type": "code",
- "execution_count": 5,
- "metadata": {
- "collapsed": false
- },
- "outputs": [
- {
- "name": "stdout",
- "output_type": "stream",
- "text": [
- "P is 4.972 KN \n"
- ]
- }
- ],
- "source": [
- "from math import sqrt\n",
- "h=10#\n",
- "t=10/sqrt(2)#\n",
- "Ta=80#\n",
- "x=((50*25)+(50*0))/(50+50)#\n",
- "y=x#\n",
- "ra=sqrt(x**2+37.5**2)#\n",
- "Ixx=(7.07*50**3/12)+(50*7.07*(12.5**2))+(50*7.07*12.5**2)#\n",
- "IG=2*Ixx#\n",
- "e=100+(50-12.5)#\n",
- "Tr=16.09*10**-3#\n",
- "P=Ta/Tr#\n",
- "P=P*10**-3#\n",
- "print \"P is %0.3f KN \"%(P)#"
- ]
- },
- {
- "cell_type": "markdown",
- "metadata": {},
- "source": [
- "## exa 12-6 - Page 350"
- ]
- },
- {
- "cell_type": "code",
- "execution_count": 6,
- "metadata": {
- "collapsed": false
- },
- "outputs": [
- {
- "name": "stdout",
- "output_type": "stream",
- "text": [
- "h is 5 mm \n"
- ]
- }
- ],
- "source": [
- "from math import sqrt,pi\n",
- "P=16*10**3#\n",
- "l=300#\n",
- "r=50#\n",
- "M=P*l#\n",
- "A=2*pi*r#\n",
- "Ixx=pi*r**3#\n",
- "sigb=M*r/Ixx#\n",
- "Td=P/A#\n",
- "Tmax=sqrt((sigb/2)**2+(Td**2))#\n",
- "Ta=90#\n",
- "t=Tmax/Ta#\n",
- "h=sqrt(2)*t#\n",
- "h=5#\n",
- "print \"h is %0.0f mm \"%(h)#"
- ]
- },
- {
- "cell_type": "markdown",
- "metadata": {},
- "source": [
- "## exa 12-7 - Page 350"
- ]
- },
- {
- "cell_type": "code",
- "execution_count": 7,
- "metadata": {
- "collapsed": false
- },
- "outputs": [
- {
- "name": "stdout",
- "output_type": "stream",
- "text": [
- "l is 202 mm \n"
- ]
- }
- ],
- "source": [
- "sigut=415#\n",
- "sige=sigut/3#\n",
- "Ka=0.5#\n",
- "Kb=0.85#\n",
- "Kc=0.897#\n",
- "SCF=1.5#\n",
- "Kd=1/SCF#\n",
- "FOS=2#\n",
- "sige1=sige*Ka*Kb*Kc*Kd/FOS#\n",
- "Pa=50*10**3#\n",
- "h=10#\n",
- "t=0.707*h#\n",
- "l=Pa/(2*sige1*t)#\n",
- "print \"l is %0.0f mm \"%(l)#"
- ]
- },
- {
- "cell_type": "markdown",
- "metadata": {},
- "source": [
- "## exa 12-8 - Page 351"
- ]
- },
- {
- "cell_type": "code",
- "execution_count": 8,
- "metadata": {
- "collapsed": false
- },
- "outputs": [
- {
- "name": "stdout",
- "output_type": "stream",
- "text": [
- "h is 3 mm \n"
- ]
- }
- ],
- "source": [
- "from math import sqrt,pi\n",
- "l=300#\n",
- "P=30*10**3#\n",
- "T=P/(2*l)#\n",
- "Ta=124#\n",
- "t1=T/Ta#\n",
- "h1=sqrt(2)*t1#\n",
- "M=P*l#\n",
- "Ixx=2*100*110**2#\n",
- "sigb=M/Ixx*110#\n",
- "#Let the allowable bending stress is Tab\n",
- "Tab=200#\n",
- "t2=sigb/Tab#\n",
- "h2=t2/0.707#\n",
- "h2=3#\n",
- "print \"h is %0.0f mm \"%(h2)#"
- ]
- },
- {
- "cell_type": "markdown",
- "metadata": {},
- "source": [
- "## exa 12-9 - Page 352"
- ]
- },
- {
- "cell_type": "code",
- "execution_count": 9,
- "metadata": {
- "collapsed": false
- },
- "outputs": [
- {
- "name": "stdout",
- "output_type": "stream",
- "text": [
- " h is 20 mm \n",
- "\n",
- " a is 40 mm \n"
- ]
- }
- ],
- "source": [
- "Ta=60#\n",
- "l1=60#\n",
- "l2=40#\n",
- "P1=Ta*0.707*l1#\n",
- "P2=Ta*0.707*l2#\n",
- "P=80*10**3#\n",
- "h=P/(P1+P2)#\n",
- "h=20#\n",
- "a=(P2*100)/(P1+P2)#\n",
- "print \" h is %0.0f mm \"%(h)#\n",
- "print \"\\n a is %0.0f mm \"%(a)#"
- ]
- },
- {
- "cell_type": "markdown",
- "metadata": {},
- "source": [
- "## exa 12-10 - Page 352"
- ]
- },
- {
- "cell_type": "code",
- "execution_count": 10,
- "metadata": {
- "collapsed": false
- },
- "outputs": [
- {
- "name": "stdout",
- "output_type": "stream",
- "text": [
- "h is 9 mm \n"
- ]
- }
- ],
- "source": [
- "from math import sqrt\n",
- "P=300*10**3#\n",
- "l=500#\n",
- "A=2*l#\n",
- "Td=P/A#\n",
- "T=(350-250)*P#\n",
- "IG=(l**3*2/12)+(l*2*5**2)#\n",
- "r=sqrt(250**2+5**2)#\n",
- "Ts=T*r/IG#\n",
- "Ts=Ts+Td#\n",
- "Ta=110#\n",
- "t=Ts/Ta#\n",
- "h=t/0.707#\n",
- "h=9#\n",
- "print \"h is %0.0f mm \"%(h)#"
- ]
- },
- {
- "cell_type": "markdown",
- "metadata": {},
- "source": [
- "## exa 12-11 - Page 353"
- ]
- },
- {
- "cell_type": "code",
- "execution_count": 11,
- "metadata": {
- "collapsed": false
- },
- "outputs": [
- {
- "name": "stdout",
- "output_type": "stream",
- "text": [
- "l is 45.4 mm \n"
- ]
- }
- ],
- "source": [
- "t=30#\n",
- "sigut=417#\n",
- "sige=sigut/2#\n",
- "Ka=0.5#\n",
- "Kb=0.85#\n",
- "Kc=0.897#\n",
- "SCF=1.2#\n",
- "Kd=1/SCF#\n",
- "FOS=1.5#\n",
- "sige1=sige*Ka*Kb*Kc*Kd/FOS#\n",
- "Pa=60*10**3#\n",
- "l=Pa/(sige1*t)#\n",
- "print \"l is %0.1f mm \"%(l)#"
- ]
- }
- ],
- "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
-}
generated by cgit (git 2.34.1) at 2024-12-20 07:17:53 +0000