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Material data files

Andreas Nicolai edited this page Nov 19, 2018 · 4 revisions

Material Functions and Material Data Files

To define material properties:

  • either use functions from m6 material file (only a subset of all options is supported, see below)
  • use built-in functions from Material class, in this case the material reference in the project file must have the name: built-in:<nr>

Example:

<!--List of all materials used in this construction-->
<Materials>
	<MaterialReference name="My material">built-in:2</MaterialReference>
</Materials>

This will make the solver use the built-in material data set with index 2 (see Material class).

Subset of material data used in OpenHAM

OpenHAM supports a subset of the material functions used in DELPHIN when providing material data files.

Moisture-tight materials have to be flagged as such by VAPOR_TIGHT or WATER_TIGHT flags (see material model).

Required parameters:

  • LAMBDA_DRY
  • CET
  • RHO

Functions:

  • moisture retention function thetal(pc) as spline
  • liquid conductivity lgKl(thetal) as spline
  • vapour permeability lgKv(thetal) as spline or parameter MEW

See also description of the material model.

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