tinsert intro text - slidergrid - grid of elastic sliders on a frictional surface
 (HTM) git clone git://src.adamsgaard.dk/slidergrid
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 (DIR) commit 40de282160ee90a414a91f45c48f1a8bfd2bd6bc
 (DIR) parent 476c2046fbb6ac2eef3d7a24403db6918e665dde
 (HTM) Author: Anders Damsgaard Christensen <adc@geo.au.dk>
       Date:   Tue, 19 Apr 2016 16:14:52 -0700
       
       insert intro text
       
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       2 files changed, 11 insertions(+), 1 deletion(-)
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       t@@ -48,7 +48,14 @@ of Oceanography\\University of California, San Diego}\\[3mm] Last revision:
        
        
        \section{Methods}
       -Incremental method, derived from \citet{Potyondy2004}.
       +The Lagrangian points are connected with visco-elastic beams which are resistive 
       +to relative translational or rotational movement between a pair of bonded 
       +points.  The bond deformation in each degree of freedom is determined by an 
       +incremental method, derived from \citet{Potyondy2004}, and used to determine the 
       +resistive forces.  The interaction can be decomposed into bond tension and 
       +compression, bond shearing, bond twisting, and bond bending.  These components 
       +are independent and can be determined individually.  The generated forces are 
       +added to the force and torque balance on each point.
        
        \subsection{Bond tension and compression}
        
       t@@ -58,6 +65,9 @@ Incremental method, derived from \citet{Potyondy2004}.
        
        \subsection{Bond bend}
        
       +\subsection{Temporal integration}
       +
       +