How to solve negative eigenvalue error ?

"[email protected] [Abaqus]" <[email protected]> 30 Sep 2019 01:30:09 -0700
Newsgroups gmane.comp.mathematics.abaqus.user
Message-ID <[email protected]>
--9nlWnTS9ocNmxdhsK3FKVLWiM6a5jwOaA8HvrLV
Content-Transfer-Encoding: base64
Content-Type: text/plain; charset="UTF-8"
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--9nlWnTS9ocNmxdhsK3FKVLWiM6a5jwOaA8HvrLV
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: 7bit




<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
</head>






 
<body style="background-color: #fff;">
<span style="display:none">&nbsp;</span>

<!--~-|**|PrettyHtmlStartT|**|-~-->
<div id="ygrp-mlmsg" style="position:relative;">
  <div id="ygrp-msg" style="z-index: 1;">
<!--~-|**|PrettyHtmlEndT|**|-~-->

    <div id="ygrp-text" >
      
      
      <p><p><span>Hello,</span></p><p>I&#39;m doing FE simulation in 3D Printer with ABS material. For that, I have design Nozzle, filament and glass plate. Initially my nozzle at 240 degree, filament at 25 degree, and glass at 80-degree temperature. in step-1 Nozzle inside surface and filament all surface has surface-to-surface contact and filament is moving (0.0002 m/s)&nbsp; through the hot nozzle and due to conduction process filament melt and reach up to 240 degree temperature. And filament moves until nozzle end. then I have 1 mm distance between nozzle and glass. in step-2 my glass should move (X-Direction with 0.002 m/s) and filament should move downward direction (Y-direction with 0.0002 m/s) [I took random speed ]. And I have made a node to surface contact between glass upper fac
 e and filament all surface. but when my step-2 start it stops with an error of too many attempts are required and in warning negative eigenvalue. Can anybody help me to solve this problem ? at this moment I&#39;m totally confused to solve this problem. you ideas will help me a lot.&nbsp;</p></p>

    </div>
     

    <!--~-|**|PrettyHtmlStart|**|-~-->
    <div style="color: #fff; height: 0;">__._,_.___</div>

          
  
 

    
    <div style="clear:both"> </div>

    <div id="fromDMARC" style="margin-top: 10px;">
        <hr style="height:2px ; border-width:0; color:#E3E3E3; background-color:#E3E3E3;">
        Posted by: [email protected]        <hr style="height:2px ; border-width:0; color:#E3E3E3; background-color:#E3E3E3;">
     </div>
    <div style="clear:both"> </div>

    <table cellspacing=4px style="margin-top: 10px; margin-bottom: 10px; color: #2D50FD;">
      <tbody>
        <tr>
          <td style="font-size: 12px; font-family: arial; font-weight: bold; padding: 7px 5px 5px;"  >
                          <a style="text-decoration: none; color: #2D50FD" href="https://groups.yahoo.com/neo/groups/Abaqus/conversations/messages/34035;_ylc=X3oDMTJwNjY2NGJoBF9TAzk3MzU5NzE0BGdycElkAzM3MzQwMgRncnBzcElkAzE3MDUwODM2NjMEbXNnSWQDMzQwMzUEc2VjA2Z0cgRzbGsDcnBseQRzdGltZQMxNTY5ODM5MDA3?act=reply&messageNum=34035">Reply via web post</a>
                      </td>
          <td>&bull;</td>
          <td style="font-size: 12px; font-family: arial; padding: 7px 5px 5px;" >
            <a href="mailto:[email protected]?subject=Re%3A%20How%20to%20solve%20negative%20eigenvalue%20error%20%3F" style="text-decoration: none; color: #2D50FD;">
               Reply to sender            </a>
          </td>
          <td>&bull;</td>
          <td style="font-size: 12px; font-family: arial; padding: 7px 5px 5px;">
            <a href="mailto:[email protected]?subject=Re%3A%20How%20to%20solve%20negative%20eigenvalue%20error%20%3F" style="text-decoration: none; color: #2D50FD">
              Reply to group            </a>
          </td>
          <td>&bull;</td>
          <td style="font-size: 12px; font-family: arial; padding: 7px 5px 5px;" >
            <a href="https://groups.yahoo.com/neo/groups/Abaqus/conversations/newtopic;_ylc=X3oDMTJkdW5tNHY5BF9TAzk3MzU5NzE0BGdycElkAzM3MzQwMgRncnBzcElkAzE3MDUwODM2NjMEc2VjA2Z0cgRzbGsDbnRwYwRzdGltZQMxNTY5ODM5MDA3" style="text-decoration: none; color: #2D50FD">Start a New Topic</a>
          </td>
          <td>&bull;</td>
          <td style="font-size: 12px; font-family: arial; padding: 7px 5px 5px;color: #2D50FD;" >
                            <a href="https://groups.yahoo.com/neo/groups/Abaqus/conversations/topics/34035;_ylc=X3oDMTM1OXZkZ3NxBF9TAzk3MzU5NzE0BGdycElkAzM3MzQwMgRncnBzcElkAzE3MDUwODM2NjMEbXNnSWQDMzQwMzUEc2VjA2Z0cgRzbGsDdnRwYwRzdGltZQMxNTY5ODM5MDA3BHRwY0lkAzM0MDM1" style="text-decoration: none; color: #2D50FD;">Messages in this topic</a>
                (1)
                      </td>
        </tr>
      </tbody>
    </table>

        

<!------- Start Nav Bar ------>


    <div id="ygrp-grfd" style="font-family: Verdana; font-size: 12px; padding: 15px 0;">
      
<!-- |**|begin egp html banner|**| -->

      Community email addresses:<BR>
&nbsp; Post message: [email protected]<BR>
&nbsp; Subscribe:&nbsp;&nbsp;&nbsp; [email protected]<BR>
&nbsp; Unsubscribe:&nbsp; [email protected]<BR>
&nbsp; List owner:&nbsp;&nbsp; [email protected]<BR>
<BR>
Shortcut URL to this page:<BR>
&nbsp; <a href="http://groups.yahoo.com/group/Abaqus">http://groups.yahoo.com/group/Abaqus</a>      
<!-- |**|end egp html banner|**| -->

    </div>
  

 

<!-- |**|begin egp html banner|**| -->
<div id="ygrp-vital" style="background-color: #f2f2f2; font-family: Verdana; font-size: 10px; margin-bottom: 10px; padding: 10px;">

    <span id="vithd" style="font-weight: bold; color: #333; text-transform: uppercase; "><a href="https://groups.yahoo.com/neo/groups/Abaqus/info;_ylc=X3oDMTJkc3NzMTMyBF9TAzk3MzU5NzE0BGdycElkAzM3MzQwMgRncnBzcElkAzE3MDUwODM2NjMEc2VjA3Z0bARzbGsDdmdocARzdGltZQMxNTY5ODM5MDA3" style="text-decoration: none;">Visit Your Group</a></span>

     <ul style="list-style-type: none; margin: 0; padding: 0; display: inline;">
                                                    </ul>
  </div>


<div id="ft" style="font-family: Arial; font-size: 11px; margin-top: 5px; padding: 0 2px 0 0; clear: both;">
  <a href="https://groups.yahoo.com/neo;_ylc=X3oDMTJjNm04Ym8xBF9TAzk3NDc2NTkwBGdycElkAzM3MzQwMgRncnBzcElkAzE3MDUwODM2NjMEc2VjA2Z0cgRzbGsDZ2ZwBHN0aW1lAzE1Njk4MzkwMDc-" style="float: left;"><img src="https://s.yimg.com/ru/0.9.12/min/css/yahoo_en-US_f_pw_101x21.png" height="21" width="101" alt="Yahoo! Groups" style="border: 0;"/></a>
  <div style="color: #747575; float: right;"> &bull; <a href="https://info.yahoo.com/privacy/us/yahoo/groups/details.html" style="text-decoration: none;">Privacy</a> &bull; <a href="mailto:[email protected]?subject=Unsubscribe" style="text-decoration: none;">Unsubscribe</a> &bull; <a href="https://info.yahoo.com/legal/us/yahoo/utos/terms/" style="text-decoration: none;">Terms of Use</a> </div>
</div>
<br>

<!-- |**|end egp html banner|**| -->

  </div> <!-- ygrp-msg -->

 
  <!-- Sponsor -->
  <!-- |**|begin egp html banner|**| -->
  <div id="ygrp-sponsor" style="width:160px; float:right; clear:none; margin:0 0 25px 0; background: #fff;">

<!-- Start Recommendations -->
<div id="ygrp-reco">
     </div>
<!-- End Recommendations -->



  </div>   <!-- |**|end egp html banner|**| -->

  <div style="clear:both; color: #FFF; font-size:1px;">.</div>
</div>

  <img src="http://geo.yahoo.com/serv?s=97359714/grpId=373402/grpspId=1705083663/msgId=34035/stime=1569839007" width="1" height="1"> <br>

<img src="http://y.analytics.yahoo.com/fpc.pl?ywarid=515FB27823A7407E&a=10001310322279&js=no&resp=img" width="1" height="1"> 

<div style="color: #fff; height: 0;">__,_._,___</div>
<!--~-|**|PrettyHtmlEnd|**|-~-->

</body>

<!--~-|**|PrettyHtmlStart|**|-~-->
<head>
  <style type="text/css">
  <!--
  #ygrp-mkp {
  border: 1px solid #d8d8d8;
  font-family: Arial;
  margin: 10px 0;
  padding: 0 10px;
}

#ygrp-mkp hr {
  border: 1px solid #d8d8d8;
}

#ygrp-mkp #hd {
  color: #628c2a;
  font-size: 85%;
  font-weight: 700;
  line-height: 122%;
  margin: 10px 0;
}

#ygrp-mkp #ads {
  margin-bottom: 10px;
}

#ygrp-mkp .ad {
  padding: 0 0;
}

#ygrp-mkp .ad p {
  margin: 0;
}

#ygrp-mkp .ad a {
  color: #0000ff;
  text-decoration: none;
}
  #ygrp-sponsor #ygrp-lc {
  font-family: Arial;
}

#ygrp-sponsor #ygrp-lc #hd {
  margin: 10px 0px;
  font-weight: 700;
  font-size: 78%;
  line-height: 122%;
}

#ygrp-sponsor #ygrp-lc .ad {
  margin-bottom: 10px;
  padding: 0 0;
}

  #actions {
    font-family: Verdana;
    font-size: 11px;
    padding: 10px 0;
  }

  #activity {
    background-color: #e0ecee;
    float: left;
    font-family: Verdana;
    font-size: 10px;
    padding: 10px;
  }

  #activity span {
    font-weight: 700;
  }

  #activity span:first-child {
    text-transform: uppercase;
  }

  #activity span a {
    color: #5085b6;
    text-decoration: none;
  }

  #activity span span {
    color: #ff7900;
  }

  #activity span .underline {
    text-decoration: underline;
  }

  .attach {
    clear: both;
    display: table;
    font-family: Arial;
    font-size: 12px;
    padding: 10px 0;
    width: 400px;
  }

  .attach div a {
    text-decoration: none;
  }

  .attach img {
    border: none;
    padding-right: 5px;
  }

  .attach label {
    display: block;
    margin-bottom: 5px;
  }

  .attach label a {
    text-decoration: none;
  }
  
  blockquote {
    margin: 0 0 0 4px;
  }

  .bold {
    font-family: Arial;
    font-size: 13px;
    font-weight: 700;
  }

  .bold a {
    text-decoration: none;
  }

  dd.last p a {
    font-family: Verdana;
    font-weight: 700;
  }

  dd.last p span {
    margin-right: 10px;
    font-family: Verdana;
    font-weight: 700;
  }

  dd.last p span.yshortcuts {
    margin-right: 0;
  }

  div.attach-table div div a {
    text-decoration: none;
  }

  div.attach-table {
    width: 400px;
  }

  div.file-title a, div.file-title a:active, div.file-title a:hover, div.file-title a:visited {
    text-decoration: none;
  }

  div.photo-title a, div.photo-title a:active, div.photo-title a:hover, div.photo-title a:visited {
    text-decoration: none;
  }

  div#ygrp-mlmsg #ygrp-msg p a span.yshortcuts {
    font-family: Verdana;
    font-size: 10px;
    font-weight: normal;
  }

  .green {
    color: #628c2a;
  }

  .MsoNormal {
    margin: 0 0 0 0;
  }

  o {
    font-size: 0;
  }

  #photos div {
    float: left;
    width: 72px;
  }

  #photos div div {
    border: 1px solid #666666;
    height: 62px;
    overflow: hidden;
    width: 62px;
  }

  #photos div label {
    color: #666666;
    font-size: 10px;
    overflow: hidden;
    text-align: center;
    white-space: nowrap;
    width: 64px;
  }

  #reco-category {
    font-size: 77%;
  }

  #reco-desc {
    font-size: 77%;
  }

  .replbq {
    margin: 4px;
  }

  #ygrp-actbar div a:first-child {
   /* border-right: 0px solid #000;*/
    margin-right: 2px;
    padding-right: 5px;
  }

  #ygrp-mlmsg {
    font-size: 13px;
    font-family: Arial, helvetica,clean, sans-serif;
    *font-size: small;
    *font: x-small;
  }

  #ygrp-mlmsg table {
    font-size: inherit;
    font: 100%;
  }

  #ygrp-mlmsg select, input, textarea {
    font: 99% Arial, Helvetica, clean, sans-serif;
  }

  #ygrp-mlmsg pre, code {
    font:115% monospace;
    *font-size:100%;
  }

  #ygrp-mlmsg * {
    line-height: 1.22em;
  }

  #ygrp-mlmsg #logo {
    padding-bottom: 10px;
  }


  #ygrp-msg p a {
    font-family: Verdana;
  }

  #ygrp-msg p#attach-count span {
    color: #1E66AE;
    font-weight: 700;
  }

  #ygrp-reco #reco-head {
    color: #ff7900;
    font-weight: 700;
  }

  #ygrp-reco {
    margin-bottom: 20px;
    padding: 0px;
  }

  #ygrp-sponsor #ov li a {
    font-size: 130%;
    text-decoration: none;
  }

  #ygrp-sponsor #ov li {
    font-size: 77%;
    list-style-type: square;
    padding: 6px 0;
  } 

  #ygrp-sponsor #ov ul {
    margin: 0;
    padding: 0 0 0 8px;
  }

  #ygrp-text {
    font-family: Georgia;
  }

  #ygrp-text p {
    margin: 0 0 1em 0;
  }

  #ygrp-text tt {
    font-size: 120%;
  }

  #ygrp-vital ul li:last-child {
    border-right: none !important; 
  } 
  -->
  </style>
</head>

<!--~-|**|PrettyHtmlEnd|**|-~-->
</html>
<!-- end group email -->


--9nlWnTS9ocNmxdhsK3FKVLWiM6a5jwOaA8HvrLV--