Einspieluntersuchungen von Verbundwerkstoffen mit periodischer Mikrostruktur

In the present work, the shakedown behaviour of composite materials with periodic microstructure is investigated. For this, a general static shakedown theorem is given and proven taking into account the effects of limited linear kinematical hardening and plastic ductile damage. A general procedure is proposed to determine the admissible domains of macroscopic stresses. The methodology is based on the finite element method and a nonlinear mathematical programme to determine the safety factor against failure for large scale nonlinear problems. For this, an idealised class of composite material with a periodic microstructure is considered, allowing the determination of the macroscopic behaviour from microscopic information by means of the homogenisation theory. To this end, the concept of a representative volume element is introduced, which may be viewed as a heterogeneous structure under prescribed boundary conditions, corresponding to the uniform local continuum fields. To predict the life-time of such materials, several illustrative examples are given to show the applicability of the presented method with regards to the special case of metal-matrix composites with continuous fibers.

Grantor dc:publisher

Publikationsserver der RWTH Aachen University

Year dc:date

2000

Author dc:creator

• Schwabe, Frank

Contributors dc:contributor

• Weichert, Dieter

• info:eu-repo/classification/ddc/530
• Physik
• Verbundwerkstoff
• Mikrostruktur
• Mechanische Beanspruchung
• Einspielen

Statement dc:rights

• info:eu-repo/semantics/openAccess

Language dc:language

ger

Identifier

https://publications.rwth-aachen.de/search?p=id:%22RWTH-CONV-124385%22

OAI identifier oai:identifier

oai:publications.rwth-aachen.de:62893