When defining a model for analyzing, the selection and definition
of the loads and boundary conditions should be constructed with special
consideration because an incorrectly defined or forgotten load or support
might have a very pronounced effect on the result of the optimized structure.
The basic characteristics of the analysis model that can be optimized
are described in detail in Solver Specific Features (optimizable element
types, number of load cases
and permitted boundary conditions, types of analysis, nonlinearities). Keep in
mind, that one single finite element can consist of several laminates
which is especially common for shell elements to specify, for example, several
cross sections or materials. In SIMULIA Tosca Structure,
this is called a "ply". Currently SIMULIA Tosca Structure
supports only one single ply for each element and stops with an error
message if elements with multiple plies are found.