Parametric stability investigations for hydro-statically loaded membranes
2016 (English)In: Computers & structures, ISSN 0045-7949, E-ISSN 1879-2243, Vol. 174, 33-41 p.Article in journal (Refereed) Published
This paper discusses instabilities occurring in thin pressurized membranes, important in biological as well as in engineering contexts. The membranes are represented by only their in-plane stress components, for which an incompressible isotropic hyper-elastic behavior can be assumed. A hydro-static pressurization can give instabilities in the form of limit points with respect to a loading parameter, but also bifurcations, and wrinkling. The hyper-elastic material model itself can also, under some circumstances, lead to a bifurcation situation. The instability situations can be included as constraints in a structural optimization. The paper discusses the formulation, the solution methods and some relevant instability situations. Numerical examples considering the pressurization of a flat and a cylindrical pre-stressed membrane illustrate some aspects of instability.
Place, publisher, year, edition, pages
2016. Vol. 174, 33-41 p.
Thin membranes, Hydro-static loading, Instability, Optimization, Axisymmetry-breaking
IdentifiersURN: urn:nbn:se:kth:diva-194258DOI: 10.1016/j.compstruc.2015.08.014ISI: 000384383200004ScopusID: 2-s2.0-84953257038OAI: oai:DiVA.org:kth-194258DiVA: diva2:1039557
QC 201610242016-10-242016-10-212016-10-24Bibliographically approved