I am doing a quick calculation on how to calculate the pressure needed to inflate a perfectly spherical balloon to a certain volume, however I have difficulties with the fact that the balloon (rubber) has resistance to stretching and how this affects the pressure needed. It has to do with the E-modulus of the material I think, but I can not think of a proper way to calculate it.
EDIT: Looking for a few hours in my materials books now, but after posting it here I found an answer online already: http://www.colorado.edu/engineering/CAS/courses.d/Structures.d/ASEN3112.Lect05.d/ASEN3112.Lect05.pdf
This one has an example in it which actually answers my question.
