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Subject On modelling textiles
Date
Wed Oct 1 2003 12:28
Author Tor Erik Vigran
(vigran@tele.ntnu.no)
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Modelling a textile may be a little tricky. If the textile has an impervious backing (e.g.plastics) I would suggest a combination of a thin porous layer and the limp mass model, the latter without any added resistance. The problem will be to estimate the flow resistivity of the porous layer. Without any measurement data you will have to make a proper guess. You may of cource use a single limp mass layer but again you must guess on the resistance value to be added. I may add that the added resistance in this model was not intended to be of a porous type.
For a textile without any impervious backing a porous layer model should be used but again, without proper data on the flow resistance you are left to guess. As for comparing a model of a thin fabric with a porous layer with the same total resistance, please see the reference under the "Slotted plate" in the manual.
Hopefully, this may be of some help for you. It would be interesting if there are other inputs on this question.
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