Publica
Hier finden Sie wissenschaftliche Publikationen aus den FraunhoferInstituten. Fast numerical computation of effective elastic moduli of porous materials
 Hellmich, C.: Poromechanics V: Proceedings of the Fifth Biot Conference on Poromechanics (in Memory of Karl von Terzaghi, 18831963). CDROM : July 1012, 2013, Vienna, Austria 2013 ISBN: 9780784412992 pp.827833 
 Biot Conference on Poromechanics <5, 2013, Vienna> 

 English 
 Conference Paper 
 Fraunhofer ITWM () 
Abstract
A fast numerical solver to compute effective properties of porous elastic composites is presented. Pores can be treated as a material phase with vanishing stiffness (vacuum) or as a compressible or incompressible material phase (e.g. air, water, oil). For the numerical homogenization (of porous materials), the equations of elasticity are reformulated as volume integral equations of LippmannSchwinger type for the local strain. This approach is particularly suited for 3D digital images (CT images) of complex microstructures and needs much less computational effort than finite element schemes to predict the effective properties [1]. As new application of this method we calculate amongst other the pore pressure coefficient for digital rocks. For validation the numerical results are compared with results of finite element schemes and measurements.