mirror of
https://git.salome-platform.org/gitpub/modules/smesh.git
synced 2024-12-27 09:50:34 +05:00
255 lines
11 KiB
HTML
Executable File
255 lines
11 KiB
HTML
Executable File
<!doctype HTML public "-//W3C//DTD HTML 4.0 Frameset//EN">
|
|
|
|
<html>
|
|
|
|
<head>
|
|
<title>Arithmetic 1D</title>
|
|
<meta http-equiv="content-type" content="text/html; charset=windows-1252">
|
|
<meta name="generator" content="RoboHelp by eHelp Corporation www.ehelp.com">
|
|
<link rel="stylesheet" href="../default_ns.css"><script type="text/javascript" language="JavaScript" title="WebHelpSplitCss">
|
|
<!--
|
|
if (navigator.appName !="Netscape")
|
|
{ document.write("<link rel='stylesheet' href='../default.css'>");}
|
|
//-->
|
|
</script>
|
|
<style type="text/css">
|
|
<!--
|
|
img_whs1 { border:none; width:332px; height:238px; float:none; border-style:none; }
|
|
img_whs2 { border:none; width:309px; height:316px; float:none; }
|
|
p.whs3 { margin-left:0px; }
|
|
img_whs4 { border:none; width:332px; height:212px; float:none; border-style:none; }
|
|
img_whs5 { border:none; width:267px; height:339px; float:none; }
|
|
p.whs6 { font-weight:bold; }
|
|
img_whs7 { border:none; width:367px; height:224px; border-style:none; float:right; }
|
|
img_whs8 { border:none; width:252px; height:243px; float:none; }
|
|
p.whs9 { font-weight:bold; margin-left:40px; }
|
|
img_whs10 { border:none; width:431px; height:233px; border-style:none; float:right; }
|
|
img_whs11 { border:none; width:395px; height:387px; float:none; }
|
|
img_whs12 { border:none; width:332px; height:264px; float:none; border-style:none; }
|
|
img_whs13 { border:none; width:333px; height:386px; float:none; border-style:none; }
|
|
img_whs14 { border:none; width:333px; height:285px; float:none; border-style:none; }
|
|
img_whs15 { border:none; width:287px; height:305px; float:none; }
|
|
-->
|
|
</style><script type="text/javascript" language="JavaScript">
|
|
<!--
|
|
if ((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) == 4))
|
|
{
|
|
var strNSS = "<style type='text/css'>";
|
|
strNSS += "p.whs3 {margin-left:1pt; }";
|
|
strNSS +="</style>";
|
|
document.write(strNSS);
|
|
}
|
|
//-->
|
|
</script>
|
|
<script type="text/javascript" language="JavaScript" title="WebHelpInlineScript">
|
|
<!--
|
|
function reDo() {
|
|
if (innerWidth != origWidth || innerHeight != origHeight)
|
|
location.reload();
|
|
}
|
|
if ((parseInt(navigator.appVersion) == 4) && (navigator.appName == "Netscape")) {
|
|
origWidth = innerWidth;
|
|
origHeight = innerHeight;
|
|
onresize = reDo;
|
|
}
|
|
onerror = null;
|
|
//-->
|
|
</script>
|
|
<style type="text/css">
|
|
<!--
|
|
div.WebHelpPopupMenu { position:absolute; left:0px; top:0px; z-index:4; visibility:hidden; }
|
|
-->
|
|
</style><script type="text/javascript" language="javascript1.2" src="../whmsg.js"></script>
|
|
<script type="text/javascript" language="javascript" src="../whver.js"></script>
|
|
<script type="text/javascript" language="javascript1.2" src="../whproxy.js"></script>
|
|
<script type="text/javascript" language="javascript1.2" src="../whutils.js"></script>
|
|
<script type="text/javascript" language="javascript1.2" src="../whtopic.js"></script>
|
|
</head>
|
|
<body><script type="text/javascript" language="javascript1.2">
|
|
<!--
|
|
if (window.gbWhTopic)
|
|
{
|
|
if (window.addTocInfo)
|
|
{
|
|
addTocInfo("MESH module\nCreating meshes\nDefining hypotheses\n1D Meshing Hypotheses");
|
|
addButton("show",BTN_TEXT,"Show","","","","",0,0,"","","");
|
|
|
|
}
|
|
if (window.writeBtnStyle)
|
|
writeBtnStyle();
|
|
|
|
if (window.writeIntopicBar)
|
|
writeIntopicBar(1);
|
|
|
|
if (window.setRelStartPage)
|
|
{
|
|
setRelStartPage("../smesh.htm");
|
|
|
|
autoSync(1);
|
|
sendSyncInfo();
|
|
sendAveInfoOut();
|
|
}
|
|
}
|
|
else
|
|
if (window.gbIE4)
|
|
document.location.reload();
|
|
//-->
|
|
</script>
|
|
<h1>1D Meshing Hypotheses</h1>
|
|
|
|
<h3>Arithmetic 1D hypothesis</h3>
|
|
|
|
<p><span style="font-weight: bold;"><B>Arithmetic 1D</B></span> hypothesis allows
|
|
to split edges into segments with a length that changes in arithmetic
|
|
progression (Lk = Lk-1 + d) beginning from a given starting length and
|
|
up to a given end length.</p>
|
|
|
|
<p> </p>
|
|
|
|
<p><img src="../pics/a-arithmetic1d.png" x-maintain-ratio="TRUE" width="332px" height="238px" border="0" class="img_whs1"> <img src="../pics/b-ithmetic1d.png" x-maintain-ratio="TRUE" width="309px" height="316px" border="0" class="img_whs2"></p>
|
|
|
|
<p> </p>
|
|
|
|
<p class="whs3"><span style="font-weight: bold;"><B>See Also</B></span>
|
|
a sample TUI Script of a <a href="../defining_hypotheses_tui.htm#bookmark">Defining
|
|
Arithmetic 1D hypothesis</a> operation. </p>
|
|
|
|
<h3><span style="font-weight: bold;"><B>Deflection</B></span> 1D hypothesis</h3>
|
|
|
|
<p><span style="font-weight: bold;"><B>Deflection ID </B></span>hypothesis can
|
|
be applied for meshing curvilinear edges composing your geometrical object.
|
|
It uses only one parameter: the value of deflection. </p>
|
|
|
|
<p>A geometrical edge is divided into equal segments. The maximum distance
|
|
between a point on the edge within a segment and the line connecting the
|
|
ends of the segment should not exceed the specified value of deflection
|
|
. Then mesh nodes are constructed at end segment locations and 1D mesh
|
|
elements are constructed on segments.</p>
|
|
|
|
<p> </p>
|
|
|
|
<p><img src="../pics/a-deflection1d.png" x-maintain-ratio="TRUE" width="332px" height="212px" border="0" class="img_whs4"> <img src="../pics/b-flection1d.png" x-maintain-ratio="TRUE" width="267px" height="339px" border="0" class="img_whs5"></p>
|
|
|
|
<p> </p>
|
|
|
|
<p class="whs3"><span style="font-weight: bold;"><B>See Also</B></span>
|
|
a sample TUI Script of a <a href="../defining_hypotheses_tui.htm#bookmark9">Defining
|
|
Deflection 1D hypothesis</a> operation. </p>
|
|
|
|
<p> </p>
|
|
|
|
<p class="whs6"><img src="../image41.gif" x-maintain-ratio="TRUE" width="367px" height="224px" align="right" border="0" class="img_whs7"></p>
|
|
|
|
<h3>Average Length hypothesis</h3>
|
|
|
|
<p><span style="font-weight: bold;"><B>Average Length </B></span>hypothesis can
|
|
be applied for meshing of edges composing your geometrical object. Definition
|
|
of this hypothesis consists of setting the <span style="font-weight: bold;"><B>length</B></span>
|
|
of segments, which will split these edges. The points on the edges generated
|
|
by these segments will represent nodes of your mesh. Later these nodes
|
|
will be used for meshing of the faces abutting to these edges.</p>
|
|
|
|
<p> </p>
|
|
|
|
<p><img src="../pics/a-averagelength.png" x-maintain-ratio="TRUE" width="332px" height="212px" border="0" class="img_whs4"> <img src="../pics/b-erage_length.png" x-maintain-ratio="TRUE" width="252px" height="243px" border="0" class="img_whs8"></p>
|
|
|
|
<p> </p>
|
|
|
|
<p class="whs3"><span style="font-weight: bold;"><B>See Also</B></span>
|
|
a sample TUI Script of a <a href="../defining_hypotheses_tui.htm#bookmark3">Defining
|
|
Average Length hypothesis</a> operation. </p>
|
|
|
|
<p> </p>
|
|
|
|
<p class="whs9"><img src="../image46.gif" x-maintain-ratio="TRUE" width="431px" height="233px" align="right" border="0" class="img_whs10"></p>
|
|
|
|
<h3>Number of segments hypothesis </h3>
|
|
|
|
<p><span style="font-weight: bold;"><B>Number of segments </B></span>hypothesis
|
|
can be applied for meshing of edges composing your geometrical object.
|
|
Definition of this hypothesis consists of setting the <span style="font-weight: bold;"><B>number</B></span>
|
|
of segments, which will split these edges. In other words your edges will
|
|
be split into a definite number of segments with approximately the same
|
|
length. The points on the edges generated by these segments will represent
|
|
nodes of your mesh. Later these nodes will be used for meshing of the
|
|
faces abutting to these edges.</p>
|
|
|
|
<p> </p>
|
|
|
|
<p class="whs3">You can set the type of distribution for this
|
|
hypothesis in the <span style="font-weight: bold;"><B>Hypothesis Construction</B></span>
|
|
dialog bog : </p>
|
|
|
|
<p class="whs3"> </p>
|
|
|
|
<p class="whs3"><span style="font-weight: bold;"><B>Equidistant
|
|
Distribution</B></span> - all segments will have the same length</p>
|
|
|
|
<p><img src="../pics/a-nbsegments1.png" x-maintain-ratio="TRUE" width="332px" height="238px" border="0" class="img_whs1"> <img src="../pics/b-mberofsegments.png" x-maintain-ratio="TRUE" width="395px" height="387px" border="0" class="img_whs11"></p>
|
|
|
|
<p> </p>
|
|
|
|
<p class="whs6">Scale Distribution - <span style="font-weight: normal;">each
|
|
next segment differs from the previous according to the formula:</span>
|
|
A<span style="vertical-align: Sub;">i+1</span> = A<span style="vertical-align: Sub;">i
|
|
</span>* k, <span style="font-weight: normal;">where</span> k <span style="font-weight: normal;">is</span>
|
|
Scale Factor </p>
|
|
|
|
<p class="whs6"><img src="../pics/a-nbsegments2.png" x-maintain-ratio="TRUE" width="332px" height="264px" border="0" class="img_whs12">\</p>
|
|
|
|
<p class="whs6"> </p>
|
|
|
|
<p class="whs6">Distribution with Table Density - <span style="font-weight: normal;">you
|
|
input a number of pairs</span> t - F(t) <span style="font-weight: normal;">and
|
|
the program computes the formula, which will rule the change of length
|
|
of segments.</span></p>
|
|
|
|
<p class="whs6"> </p>
|
|
|
|
<p class="whs6"><img src="../pics/a-nbsegments3.png" x-maintain-ratio="TRUE" width="333px" height="386px" border="0" class="img_whs13"></p>
|
|
|
|
<p class="whs6"> </p>
|
|
|
|
<p class="whs6">Distribution with Analytic Density - <span
|
|
style="font-weight: normal;">you input the formula, which will rule the
|
|
change of length of segments</span></p>
|
|
|
|
<h3><img src="../pics/a-nbsegments4.png" x-maintain-ratio="TRUE" width="333px" height="285px" border="0" class="img_whs14"></h3>
|
|
|
|
<p class="whs3"><span style="font-weight: bold;"><B>See Also</B></span>
|
|
a sample TUI Script of a <a href="../defining_hypotheses_tui.htm#bookmark9">Defining
|
|
Number of Segments hypothesis</a> operation. </p>
|
|
|
|
<h3> </h3>
|
|
|
|
<h3>Start and End Length hypothesis.</h3>
|
|
|
|
<p><span style="font-weight: bold;"><B>Start and End Length</B></span> hypothesis
|
|
allows to divide a geometrical edge into segments so that the first and
|
|
the last segments have a specified length. The length of each but the
|
|
first segment differs from length of the previous one by a constant factor.
|
|
Then mesh nodes are constructed at segment ends location and 1D mesh elements
|
|
are constructed on them.</p>
|
|
|
|
<p> </p>
|
|
|
|
<p><img src="../pics/a-startendlength.png" x-maintain-ratio="TRUE" width="332px" height="238px" border="0" class="img_whs1"> <img src="../pics/b-art_end_length.png" x-maintain-ratio="TRUE" width="287px" height="305px" border="0" class="img_whs15"></p>
|
|
|
|
<p class="whs3"> </p>
|
|
|
|
<p class="whs3"><span style="font-weight: bold;"><B>See Also</B></span>
|
|
a sample TUI Script of a <a href="../defining_hypotheses_tui.htm#bookmark3">Defining
|
|
Start and End Length hypothesis</a>
|
|
operation. </p>
|
|
|
|
<p> </p>
|
|
|
|
<script type="text/javascript" language="javascript1.2">
|
|
<!--
|
|
if (window.writeIntopicBar)
|
|
writeIntopicBar(0);
|
|
//-->
|
|
</script>
|
|
</body>
|
|
</html>
|