Re: [Getfem-users] textile structure modelling

[jean-yves heddebaut]

Alex,

thank you for your answer.
I was thinking about using  the bilaplacian but I was wondering if it  
would be representative of the behavior I  want to simulate.

The idea is to study the stresses in a tent fabric exposed to the  
load of snow and  wind ( considered to be an constant force acting on  
the fabric, the aerodynamic effects are not considered)
I guess that only the membrane behavior of the fabric has to be  
considered(the flexion part could be disregarded).

The force component acting in the plane of the fabric are balanced by  
membrane stresses. This seems to be OK with the bilaplacian solution.
My concern is about the normal component of the forces.

Would this normal load be correctly modelized , as it requires to  
take the displacements of the membrane into account ?
I am not familiar with the mathematical aspects. I don't know the  
hypothesis used to arrive to the bilaplacian equation. Does it take  
into account non negligible displacements of the forces applied to  
the membrane ?

Thank you very much for any help


jy


ps:I found an interesting document concerning the problem on  http:// 
theses-en-ligne.ccsd.cnrs.fr/documents/archives0/00/00/17/02/ 
index_fr.html