Staggered Problem

StaggeredProblem	nsteps(in) #
	deltaT() #
	prob1(s) # prob2(s) #

Represent so-called staggered analysis. This can be described as an sequence of sub-problems, where the result of some sub-problem in the sequence can depend on results of previous sub-problems in sequence. Typical example is heat transfer analysis followed by mechanical analysis taking into account the temperature field generated by the heat transfer analysis. The actual implementation supports only sequence of two sub-problems. The sub-problems are described using sub-problem input files. The syntax of sub-problem input file is the same as for standalone problem. The only addition is that sub-problems should export their solution fields so that they became available for subsequent sub-problems. The subproblem input files are described using prob1 and prob2 parameters, which are strings containing a path to sub-problem input files, the prob1 contains input file path of the first sub-problem, which runs first for each solution step, the prob2 contains input file path of the second sub-problem. The solution steps are generated by the master-problem (represented by StaggeredProblem). Therefore any sub-problem time-stepping parameters are ignored (even if they are required by sub-problem input syntax) and only master problem parameters are relevant. deltaT is time step length used for integration, nsteps parameter specifies number of time steps to be solved.

Note: This problem type is included in transport module and it can be used only when this module is configured. Note: All material models derived from StructuralMaterial base will take into account the external registered temperature field, if provided.