Boundary loads

• Constant edge fluxes (load)

  ConstantEdgeLoad	ndofs(in) #
  	loadType(in) #
  	Components(ra) #
  	[dofexcludemask(ia) #]
  	[csType(in) #]
  	[properties(dc) #]

  
  

• Constant surface fluxes (load)

  ConstantSurfaceLoad	ndofs(in) #
  	loadType(in) #
  	Components(ra) #
  	[dofexcludemask(ia) #]
  	[csType(in) #]
  	[properties(dc) #]

  
  Represent constant edge/surface loads or boundary conditions. The ndofs parameter must be set equal to element's number of unknowns. Parameter loadType distinguishes the type of boundary condition (supported values are: 2 - prescribed flux input (Neumann boundary condition), 3 - convection bc (Newton boundary condition)). If the boundary condition corresponds to distributed force load, the Components array contains components of distributed load corresponding to element unknowns. The load is specified for all DOFs of object to which is associated. For some types of boundary conditions the zero value of load does not mean that the load is not applied (Newton's type of bc, for example). Then some mask, which allows to exclude specific dofs is necessary. The dofexcludemask parameter is introduced to alow this. It should have the same size as Components array, and by default is filled with zeroes. If some value of dofExcludeMask is set to nonzero, then the corresponding componentArray is set to zero and load is not applied for this DOF. If the boundary condition corresponds to prescribed flux input, then the Components array contains the components of prescribed input flux corresponding to element unknowns. If the boundary condition is a convection boundary condition (loadType = 6) then Components array contains the environmental values (temperature of the environment) corresponding to element unknowns, and properties dictionary should contain value of convection coefficient (assumed to be constant) under 'a' key.

  The load can be defined in global coordinate system (csType = 0, default) or in entity - specific local coordinate system (csType = 1).

• Linear edge flux (load)

  LinearEdgeLoad	ndofs(in) #
  	loadType(in) #
  	Components(ra) #
  	[dofexcludemask(ia) #]
  	[csType(in) #]

  
  

  Represents linear edge load. The meanings of parameters ndofs, csType, and loadType are the same as for ConstantEdgeLoad. In Components array are stored load components for corresponding unknowns at the beginning of edge (ndofs values), followed by values valid for end of edge (ndofs values). The load can be defined in global coordinate system (csType = 0, default) or in entity - specific local coordinate system (csType = 1).