Differences

This shows you the differences between two versions of the page.

--- playground:tempjim [2014/08/28 21:32] – jim_brouzoulis
+++ playground:tempjim [2014/08/28 21:53] (current) – jim_brouzoulis
@@ Line 148: / Line 148: @@
 <file - BasicElement.h>
 </file>
+===== Problem representation - Engineering model =====
+The concept "engineering model" is an abstraction for the problem under
+consideration. It represents the type of analysis to be performed (e.g. static structural, transient heat flow, etc.).
+The base class ''EngngModel'' declares and implements the basic services for assembling
+characteristic components and services for starting the solution step and
+its termination. Derived classes ``know'' the form of governing
+equation and the physical meaning of  particular components.
+They are responsible for forming the governing equation for each solution
+step,  usually by summing contributions from particular elements and
+nodes.ecific load type dependent
+services and implement all necessary services.