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{
"cells": [
{
"cell_type": "markdown",
"metadata": {},
"source": [
"# Chapter 24: ROPE DRIVE"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 24.1: RD1.sce"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"// sum 24-1\n",
"clc;\n",
"clear;\n",
"P=150000;\n",
"m=0.4;\n",
"D=1.8;\n",
"d=0.6;\n",
"C=4.2;\n",
"V=15;\n",
"Fc=m*V^2;\n",
"BL=44.81*10^3;\n",
"FOS=35;\n",
"F1=BL/FOS;\n",
"theta=%pi-(2*asin((D-d)/(2*C)));\n",
"beta=22.5*%pi/180;\n",
"u=0.13;\n",
"x=u*theta/sin(beta);\n",
"F2=(F1-Fc)/exp(x);\n",
"n=P/((F1-F2)*V);\n",
"n=13;\n",
"\n",
" // printing data in scilab o/p window\n",
" printf('n is %0.0f ',n);"
]
}
,
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 24.2: RD2.sce"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"// sum 24-2\n",
"clc;\n",
"clear;\n",
"W=1000;\n",
"m=0.498;\n",
"BL=78;\n",
"d=12;\n",
"Am=0.39*d^2;\n",
"dw=sqrt(Am*4/(6*19*%pi));\n",
"Ew=74.4*10^3;\n",
"Ds=56*d;\n",
"sigb=Ew*dw/Ds;\n",
"Wb=sigb*%pi*(d^2)/4*10^-3;\n",
"l=20;\n",
"Ws=m*l;\n",
"a=1.2;\n",
"Wa=a*(W/2+Ws)*10^-3;\n",
"//Let the static load be Ps\n",
"Ps=(W/2+Ws)*9.81*10^-3;\n",
"//let the effective load be Peff\n",
"Peff=Ps+Wb+Wa;\n",
"FOS1=BL/Peff;\n",
"FOS2=BL/(5+0.612);\n",
"\n",
" // printing data in scilab o/p window\n",
" printf('annual FOS is %0.2f ',FOS1);\n",
" printf('\n FOS neglecting bending load is %0.1f ',FOS2);"
]
}
,
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 24.3: RD3.sce"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"// sum 24-3\n",
"clc;\n",
"clear;\n",
"d=12;\n",
"sigut=1960;\n",
"Pb=0.0025*sigut;\n",
"Ds=480;\n",
"F=Pb*d*Ds/2;\n",
"W=F*2*10^-3;\n",
"\n",
" // printing data in scilab o/p window\n",
" printf('W is %0.3f kN ',W);"
]
}
,
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 24.4: RD4.sce"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"// sum 24-4\n",
"clc;\n",
"clear;\n",
"sigut=1770;\n",
"Pb=0.0018*sigut;\n",
"W=4000;\n",
"a=2.5/2;\n",
"Ws=90*0.5;\n",
"Wa=(W+Ws)*a/9.81;\n",
"Weff=W+Wa;\n",
"d=sqrt(Weff*2/(23*Pb));\n",
"d=12;\n",
"\n",
" // printing data in scilab o/p window\n",
" printf('d is %0.0f mm ',d);"
]
}
],
"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
}
|
