App-Einstellungen:
Bitte warten...
Sie sind nicht angemeldet. Sie können ggf. mehr Inhalt sehen, wenn Sie angemeldet sind. Klicken Sie auf Anmelden oder auf Registrieren, wenn Sie noch keine Zugangsdaten haben.
EXPERIMENTAL AND NUMERICAL INVESTIGATIONS INTO DAMAGE MECHANISMS OF CFRP COMPOSITES UNDER OFF-AXIS COMPRESSION
Fan Yang (Northwestern Polytechnical University) Yazhi Li (Northwestern Polytechnical University) Yan Li (Northwestern Polytechnical University)
This paper presents an experimental investigation of CFRP specimens under off-axis compression. To reproduce the experimental observations, a computational method including a newly developed plastic model is illustrated.
MATRIX MICROCRACKING AND SPLITS MODELING IN LAMINATED COMPOSITES
Hadrien Bainier (ENS Cachan) David Néron (ENS Cachan) Pierre Ladevèze (ENS Cachan)
In this paper a new approach to tackle with transverse cracking localisation is proposed and the feasibility of the method is proved. Due to industrial requirements, the detection/computation strategy for splits has been implemented in SAMCEF.
MICROMECHANICS-BASED VALIDATION OF A MESOMODEL FOR MATRIX NONLINEARITY
Frans Van der Meer (Delft University of Technology)
The performance of a mesomechanical constitutive law for composites is assessed through comparison with micromechanical model results.
MODELLING OF KINK-BAND GROWTH BASED ON THE GEOMETRICALLY NON-LINEAR THEORY
Ragnar Larsson (Chalmers University of Technology) Mohammad Rouhi (Swerea SICOMP) Renaud Gutkin (Swerea SICOMP)
We propose an efficient continuum damage model, able to predict fibre/matrix shear failure in a UD ply under compression. A key feature is to consider the geometrical fibre kinking instability on the macro-level based on a finite strain formulation.
ON A COUPLED ELASTO-PLASTIC DAMAGE MODEL FOR FIBER REINFORCED LAMINATES
Swaroop Gaddikere Nagaraja (Montanuniversitaet Leoben) Clara Schuecker (Montanuniversitaet Leoben)
A coupled Elasto-Plastic Damage model is proposed that captures non-linear material effects at the length scale of individual plies. The constitutive framework is thermodynamically consistent and adapted to a plane stress state.
QUASI-STATIC DELAMINATION MODEL FOR LAYERED ANISOTROPIC MATERIAL STRUCTURES
Filip Kšiňan (Technical University of Kosice) Roman Vodička (Technical University of Kosice)
Mathematical model for numerical solution of damage in layered anisotropic material structures has been developed. The concept of solution is based on quasi-static rate-dependent evolution of the delamination process at the interface.
STIFFNESS PREDICTION OF DAMAGED LAMINATES BASED ON THE CONCEPT OF LAMINATE EFFECTIVE STIFFNESS
Janis Varna (Lulea University of Technology) Mohamed Loukil (Swerea SICOMP)
The concept of the effective stiffness of a unidirectional layer with intralaminar cracks is revisited performing 3-D FEM analysis of laminates, showing that in normalized form the effective stiffness is almost independent on the material and lay-up.
STRAIN RATE DEPENDENT DEFORMATION AND DAMAGE BEHAVIOUR OF TEXTILE-REINFORCED THERMOPLASTIC COMPOSITES
Matthias Zscheyge (Fraunhofer IMWS) Mike Gude (Technical University of Dresden) Robert Boehm (Technical University of Dresden) Werner Hufenbach (Technical University of Dresden)
A novel experimental procedure is developed for thermoplastic composites for determining elastic, inelastic and viscoelastic quantities with only one test. Additionally, a viscoelastic-plastic damage model is developed and implemented in ABAQUS.
CONTROVERSIES IN SOME OF THE COMMONLY USED DAMAGE MODELS INCORPORATED IN COMMERCIAL FE CODES
Elena Sitnikova (University of Nottingham) Tian-Hong Yu (University of Nottingham) Shuguang Li (University of Nottingham)
The reliability of predictions of damage in UD composites resulting from the models implemented in Abaqus and LS-Dyna is questioned, following the assessment of the predictions given by the models in some basic loading cases.
VARIATIONAL ANALYSIS OF ANGLE-PLY LAMINATES WITH ARRAYS OF PARALLEL INTRALAMINAR AND DELAMINATION CRACKS
Vladimir Vinogradov (Newcastle University)
A new variational stress analysis is suggested for effective elastic properties of angle-ply laminates with parallel (but not necessarily coplanar) intralaminar cracks and delamination cracks subjected to general in-plane membrane forces and moments.
Wir verwenden Tools, um das Verhalten unserer Benutzer zu analysieren und unsere Website zu optimieren. Sie können dem jederzeit in den Cookie Einstellungen widersprechen.
