[Back]


Talks and Poster Presentations (with Proceedings-Entry):

H. E. Pettermann, A. De Simone:
"A Linear Thermo-Viscoelastic Orthotropic Constitutve Law - Application to Composites";
Talk: ECCM17 - 17th European Conference on Composite Materials, München; 06-26-2016 - 06-30-2016; in: "ECCM17 - 17th European Conference on Composite Materials", K. Drechsler (ed.); European Society for Composite Materials, (2016), ISBN: 978-3-00-053387-7; Paper ID TUE-1_BUD_3.05-1, 8 pages.



English abstract:
A constitutive material law for linear thermo-viscoelasticity in the time domain with orthotropic material symmetry under plane stress assumption is developed and implemented into a commercial FEM package. Full orthotropy is realized for the time dependent relaxation formulation, i.e., both for the elastic as well as for the viscous properties. Thereby, each element of the relaxation tensor is described by its own and independent Prony series expansion. Time dependent thermal expansion relaxation/creep which occurs in composite materials is treated in analogy.

Various tests on isotropic and orthotropic problems are carried out for verification. Homogenized material data as input to the developed material laws are computed from a periodic unit cell approach.

Created from the Publication Database of the Vienna University of Technology.