<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=gb2312">
<META content="MSHTML 6.00.2800.1400" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT face=Arial>Hi ITK Users and Developers,</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>I am puzzled about applying the boundary condition in ITK
fem lib. The class LoadBC apply the boundary condition based on the local DOF in
the element. So, it is not convenient to apply the BC to many nodes. For
example, if I apply the BC in the Loop of the element, the BC of the node
shared by other elements has to be applied again. If I apply the BC in the Loop
of the node, first I must decide the element in which the node locates. Both
methods are not convenient. Why not ITK provedes the class used to apply
BC based on the node instead of the element?</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Thank you in advance!</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Best regards,</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Yixun Liu</FONT></DIV></BODY></HTML>