<!DOCTYPE html
  PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<!--
Copyright (c) 2006 UGS Corp.

All Rights Reserved.

This software and related documentation are proprietary to UGS Corp.
-->
<html>
   <head>
      <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
      <title>Check Criteria - Waviness, Ripple (M5)</title>
      <script language="javaScript">
        abridged="false";
        displayConditions=new Array();
      </script>
      <link type="text/css" href="../css/main_styles.css" rel="stylesheet">
   </head>
   <body class="bodydocs" onload="top.pageLoader()" bgcolor="#FFFFFF">
      <div class="title_topic4" id="xps10_pagetitle">Check Criteria - Waviness, Ripple (M5)</div>
      <hr noshade="true">
      <table cellspacing="4" width="100%" align="center">
         <tr valign="top">
            <td bgcolor="#f4f4f4" colspan="1" rowspan="1" width="20%">
               <p class="para_td"> <a class="links" href="javascript:void(0)" onclick="top.openFile('nx_analysis/vda_checker.html');return(false);">Check VDA-4955 Compliance Overview</a></p>
            </td>
            <td bgcolor="#f4f4f4" colspan="1" rowspan="1" width="20%">
               <p class="para_td"> <a class="links" href="javascript:void(0)" onclick="top.openFile('nx_analysis/vda_criteria.html');return(false);">Description of the Check Criteria</a></p>
            </td>
            <td bgcolor="#f4f4f4" colspan="1" rowspan="1" width="20%">
               <p class="para_td"> <a class="links" href="javascript:void(0)" onclick="top.openFile('nx_analysis/vda4955_check_crit_surf.html');return(false);">Faces (Surfaces)</a></p>
            </td>
            <td bgcolor="#ffffff" colspan="1" rowspan="1" width="20%"></td>
            <td bgcolor="#ffffff" colspan="1" rowspan="1" width="20%"></td>
         </tr>
      </table><br><table cellspacing="4" align="center">
         <tr valign="middle">
            <td bgcolor="#f4f4f4" colspan="2" rowspan="1" valign="top">
               <p class="para_td">Waviness, Ripple (M5)</p>
            </td>
         </tr>
         <tr valign="middle">
            <td bgcolor="#f4f4f4" colspan="1" rowspan="1" valign="top">
               <p class="para_td">Input</p>
            </td>
            <td bgcolor="#f4f4f4" colspan="1" rowspan="1" valign="top">
               <p class="para_td">Faces of solid bodies and sheet bodies (in case of underlying surface is a bspline surface)</p>
            </td>
         </tr>
         <tr valign="middle">
            <td bgcolor="#f4f4f4" colspan="1" rowspan="1" valign="top">
               <p class="para_td">Parameter</p>
            </td>
            <td bgcolor="#f4f4f4" colspan="1" rowspan="1" valign="top">
               <p class="para_td">Check value for linearity: Smooth Tolerance&nbsp; Number of Points per Segment in u-Direction and in v-Direction</p>
            </td>
         </tr>
         <tr valign="middle">
            <td bgcolor="#f4f4f4" colspan="1" rowspan="3" valign="top">
               <p class="para_td">What is analyzed ?</p>
            </td>
            <td bgcolor="#f4f4f4" colspan="1" rowspan="1" valign="top">
               <p class="para_td">Check the &quot;waviness&quot; of a surface. Compute the curvature vector at each grid point along isoparametric curves defined by Number of Points per Segment in u-Direction and in v-Direction. The number of direction (sign) changes of the curvature are counted. The criterion (M5sf) is violated if the number of sign changes within one segment is greater than 1 or within three adjacent segments greater than 3. Linear segments or segments where the absolute value of the curvature is less than the Smooth Tolerance value will be ignored. </p>
            </td>
         </tr>
         <tr>
            <td bgcolor="#F4F4F4" colspan="1" rowspan="1" valign="top">
               <p align="center"><img align="bottom" src="graphics/v2sum5.gif"></p>
            </td>
         </tr>
         <tr>
            <th bgcolor="#F4F4F4" colspan="1" rowspan="1" valign="top">
               <p class="para_th">Example fo Waviness</p>
            </th>
         </tr>
         <tr valign="middle">
            <td bgcolor="#f4f4f4" colspan="1" rowspan="1" valign="top">
               <p class="para_td">Results Log&nbsp; Output</p>
            </td>
            <td bgcolor="#f4f4f4" colspan="1" rowspan="1" valign="top">
               <table cellspacing="0" align="center">
                  <tr valign="middle">
                     <td bgcolor="#f4f4f4" colspan="6" rowspan="1">
                        <p class="para_td">M5sf</p>
                     </td>
                  </tr>
                  <tr valign="middle">
                     <td bgcolor="#f4f4f4" colspan="1" rowspan="1"></td>
                     <td bgcolor="#f4f4f4" colspan="1" rowspan="1"></td>
                     <td bgcolor="#f4f4f4" colspan="1" rowspan="1">
                        <p class="para_td">object_id</p>
                     </td>
                     <td bgcolor="#f4f4f4" colspan="1" rowspan="1"></td>
                     <td bgcolor="#f4f4f4" colspan="1" rowspan="1"></td>
                     <td bgcolor="#f4f4f4" colspan="1" rowspan="1">
                        <p class="para_td">face</p>
                     </td>
                  </tr>
                  <tr valign="middle">
                     <td bgcolor="#f4f4f4" colspan="1" rowspan="1"></td>
                     <td bgcolor="#f4f4f4" colspan="1" rowspan="1"></td>
                     <td bgcolor="#f4f4f4" colspan="1" rowspan="1">
                        <p class="para_td">value</p>
                     </td>
                     <td bgcolor="#f4f4f4" colspan="1" rowspan="1"></td>
                     <td bgcolor="#f4f4f4" colspan="1" rowspan="1"></td>
                     <td bgcolor="#f4f4f4" colspan="1" rowspan="1">
                        <p class="para_td">maximum curvature at last evaluated point</p>
                     </td>
                  </tr>
                  <tr valign="middle">
                     <td bgcolor="#f4f4f4" colspan="1" rowspan="1"></td>
                     <td bgcolor="#f4f4f4" colspan="1" rowspan="1"></td>
                     <td bgcolor="#f4f4f4" colspan="1" rowspan="1">
                        <p class="para_td">point</p>
                     </td>
                     <td bgcolor="#f4f4f4" colspan="1" rowspan="1"></td>
                     <td bgcolor="#f4f4f4" colspan="1" rowspan="1"></td>
                     <td bgcolor="#f4f4f4" colspan="1" rowspan="1">
                        <p class="para_td">coordinates of the last evaluated point</p>
                     </td>
                  </tr>
               </table><br></td>
         </tr>
      </table><br></body>
</html>