[Dda-cvs] htdocs index.htm,1.4,1.5

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	index.htm 
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Cleaned up index file home page.

Index: index.htm
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RCS file: /cvsroot/dda/htdocs/index.htm,v
retrieving revision 1.4
retrieving revision 1.5
diff -C2 -d -r1.4 -r1.5
*** index.htm	1 May 2006 17:44:53 -0000	1.4
--- index.htm	6 Jul 2006 15:52:28 -0000	1.5
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*** 1,95 ****
! <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
! "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
! 
! <html xmlns="http://www.w3.org/1999/xhtml">
! 
! <head>
! <meta name="generator" content=
! "Microsoft FrontPage 6.0" />
! <title>Discontinuous Deformation Analysis</title>
! </head>
! 
! <body>
! 
! 
! <table border="1" width="100%" id="AutoNumber1" cellpadding="10">
!   <tr>
!     <td width="17%" bgcolor="#CCCCFF">
! 	<img border="0" src="Images/DDA1.gif" width="200" height="150"></td>
!     <td width="76%" bgcolor="#CCCCFF">
!     <p class="MsoNormal" align="center"><span style="font-size:36.0pt">
!     Discontinuous Deformation Analysis</span></td>
!   </tr>
!   <tr>
!     <td width="17%" valign="top" bgcolor="#CCCCFF">
!     <ul>
!       <b>
!     <font FACE="Arial" SIZE="4">
!       <li>
!       <p align="justify" style="line-height: 150%">
!         <font FACE="Times New Roman">
!         <a href="index.dwt"><font color="#000000" size="4">Home page</font></a></font></li>
!       <li>
!       <p align="justify" style="line-height: 150%">
!         <font FACE="Times New Roman">
!         <a href="Pages/Research_Page.htm"><font color="#000000" size="4">Research</font></a></font></li>
!       <li>
!       <p align="justify" style="line-height: 150%">
!           <font color="#0000FF" FACE="Times New Roman">
!       	<a href="Pages/Download_Page.htm"><font color="#000000" size="4">Download</font></a><font color="#000000" size="4">s</font></font></li>
!       <li>
!       <p align="justify" style="line-height: 150%">
!       <font face="Times New Roman">
!       <a href="Pages/Members_Page.htm"><font color="#000000" size="4">Members</font></a></font></li>
!       <li>
!       <p align="justify" style="line-height: 150%">
!       <font FACE="Times New Roman">
!       <a href="Pages/References_Page.htm"><font color="#000000" size="4">References</font></a></font></li>
!       <li>
!       <p align="justify" style="line-height: 150%"><font face="Times New Roman">
! 		<a href="Pages/Links_Page.htm"><font color="#000000" size="4">Links</font></a></font></li>
!       <li>
!       <p align="justify" style="line-height: 150%"><font face="Times New Roman">
! 		<a href="Pages/Photos_Page.htm"><font color="#000000" size="4">Photos</font></a></font></li>
!     </ul>
! </font>
!     </b></td>
!     <td width="78%"><b>What is DDA?</b><p align="justify">DDA, Discontinuous Deformation 
!     Analysis, is a numerical method, similar to the finite element method, for 
!     solving stress-displacement problems, but for a jointed rock mass. DDA uses 
!     an implicit algorithm for simultaneous solution of the equations of 
!     equilibrium by minimizing the total potential energy of the blocky rock mass 
!     system. The relation between adjacent blocks is governed by equations of 
!     contact interpenetration and accounts for friction. DDA adopts a stepwise 
!     approach to solve for the large displacements that accompany discontinuous 
!     movements between blocks. The blocks are said to be &quot;simply deformable&quot;. 
!     Since the method accounts for the inertial forces of the blocks' mass, it 
!     can be used to solve the full dynamic problem of block motion.</p>
!     <p><b>Using DDA</b></p>
!     <p align="justify">DDA was originally presented as a complete methodology for numerically 
!     modeling discontinuous rock mass behavior. Because the behavior of fractured 
!     rock masses is largely controlled by the geometry of the fracture system, 
!     fracture geometry pre-processing is integral part of an analysis. In the 
!     current incarnation, DDA accepts lists of fractures and reduces the 
!     fractures to a block system. All this geometry adds complexity for the user 
!     as well as the programmer. The end result is that even in the Windows 
!     versions, DDA should be considered at least as complex as the average finite 
!     element code, with additional considerations for fracture geometry, plus all 
!     the difficulties common to any particle code (i.e., contact mechanics, 
!     etc.).</p>
!     <p>&nbsp;</p>
!     <p align="center" dir="ltr">
!     <img border="0" src="Images/cableu.jpg" width="240" height="316"><img border="0" src="Images/cablew.jpg" width="240" height="315"></p>
!     <p align="center" dir="ltr">
!     &nbsp;(a)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
!     (b)</p>
!     <p align="center" style="text-align:center">Axial load along the cable bolt 
!     that installed at roof of<br>
!     underground excavation: (a) without plate and (b) with plate (<a style="color: blue; text-decoration: underline; text-underline: single" href="Pages/References_Page.htm#Moosavi">M. 
!     Moosavi, R. Grayeli</a>)<b>.</b></p>
!     <p align="center" dir="ltr">&nbsp;</td>
!   </tr>
! </table>
! 
! </body>
! </html>
\ No newline at end of file
--- 1,156 ----
! <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
!     "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
! <html xmlns="http://www.w3.org/1999/xhtml">
!   <head>
!     <meta name="generator" content="Microsoft FrontPage 6.0" />
!     <meta name="author" content="Roozbeh Grayeli">
!     <meta name="author" content="David M. Doolin">
!     <title>
!       Discontinuous Deformation Analysis
!     </title>
! <style type="text/css">
! /*<![CDATA[*/
!  a.c12 {color: blue; text-decoration: underline; text-underline: single}
!  p.c11 {font-weight: bold}
!  p.c10 {text-align: justify}
!  p.c9 {color: #0000FF; font-family: Times New Roman; line-height: 150%; text-align: justify}
!  span.c8 {color: #000000; font-size: 120%}
!  a.c7 {color: #000000; font-size: 120%}
!  p.c6 {line-height: 150%; text-align: justify}
!  a.c5 {color: #000000; font-family: Times New Roman; font-size: 120%}
!  p.c4 {font-weight: bold; line-height: 150%; text-align: justify}
!  a.c3 {color: #000000; font-family: Arial; font-size: 120%}
!  p.c2 {text-align: center}
!  span.c1 {font-size:36.0pt}
! /*]]>*/
! </style>
!   </head>
!   <body>
!     <table border="1" width="100%" id="AutoNumber1" cellpadding=
!     "10">
!       <tr>
!         <td width="17%" bgcolor="#CCCCFF">
!           <img border="0" src="Images/DDA1.gif" width="200"
!           height="150" />
!         </td>
!         <td width="76%" bgcolor="#CCCCFF">
!           <p class="MsoNormal c2">
!             <span class="c1">Discontinuous Deformation
!             Analysis</span>
!           </p>
!         </td>
!       </tr>
!       <tr>
!         <td width="17%" valign="top" bgcolor="#CCCCFF">
!           <ul>
!             <li>
!               <p class="c4">
!                 <a class="c3" href="index.dwt">Home page</a>
!               </p>
!             </li>
!             <li>
!               <p class="c6">
!                 <a class="c5" href=
!                 "Pages/Research_Page.htm">Research</a>
!               </p>
!             </li>
!             <li>
!               <p class="c9">
!                 <a class="c7" href=
!                 "Pages/Download_Page.htm">Download</a><span class="c8">
!                 s</span>
!               </p>
!             </li>
!             <li>
!               <p class="c6">
!                 <a class="c5" href=
!                 "Pages/Members_Page.htm">Members</a>
!               </p>
!             </li>
!             <li>
!               <p class="c6">
!                 <a class="c5" href=
!                 "Pages/References_Page.htm">References</a>
!               </p>
!             </li>
!             <li>
!               <p class="c6">
!                 <a class="c5" href=
!                 "Pages/Links_Page.htm">Links</a>
!               </p>
!             </li>
!             <li>
!               <p class="c6">
!                 <a class="c5" href=
!                 "Pages/Photos_Page.htm">Photos</a>
!               </p>
!             </li>
!           </ul>
!         </td>
!         <td width="78%">
!           <b>What is DDA?</b>
!           <p class="c10">
!             DDA, Discontinuous Deformation Analysis, is a
!             numerical method, similar to the finite element
!             method, for solving stress-displacement problems, but
!             for a jointed rock mass. DDA uses an implicit
!             algorithm for simultaneous solution of the equations
!             of equilibrium by minimizing the total potential
!             energy of the blocky rock mass system. The relation
!             between adjacent blocks is governed by equations of
!             contact interpenetration and accounts for friction.
!             DDA adopts a stepwise approach to solve for the large
!             displacements that accompany discontinuous movements
!             between blocks. The blocks are said to be "simply
!             deformable". Since the method accounts for the
!             inertial forces of the blocks' mass, it can be used
!             to solve the full dynamic problem of block motion.
!           </p>
!           <p class="c11">
!             Using DDA
!           </p>
!           <p class="c10">
!             DDA was originally presented as a complete
!             methodology for numerically modeling discontinuous
!             rock mass behavior. Because the behavior of fractured
!             rock masses is largely controlled by the geometry of
!             the fracture system, fracture geometry pre-processing
!             is integral part of an analysis. In the current
!             incarnation, DDA accepts lists of fractures and
!             reduces the fractures to a block system. All this
!             geometry adds complexity for the user as well as the
!             programmer. The end result is that even in the
!             Windows versions, DDA should be considered at least
!             as complex as the average finite element code, with
!             additional considerations for fracture geometry, plus
!             all the difficulties common to any particle code
!             (i.e., contact mechanics, etc.).
!           </p>
!           <p>
!              
!           </p>
!           <p class="c2" dir="ltr">
!             <img border="0" src="Images/cableu.jpg" width="240"
!             height="316" /><img border="0" src=
!             "Images/cablew.jpg" width="240" height="315" />
!           </p>
!           <p class="c2" dir="ltr">
!              (a)                                                            
!             (b)
!           </p>
!           <p class="c2">
!             Axial load along the cable bolt that installed at
!             roof of<br />
!             underground excavation: (a) without plate and (b)
!             with plate (<a class="c12" href=
!             "Pages/References_Page.htm#Moosavi">M. Moosavi, R.
!             Grayeli</a>)<b>.</b>
!           </p>
!           <p class="c2" dir="ltr">
!              
!           </p>
!         </td>
!       </tr>
!     </table>
!   </body>
! </html>