The present work introduces efficient methodologies based on the finite-element method for a quick evaluation of damage resistance and damage tolerance of composite aerospace structures. Monolithic, stringer-stiffened structures, and sandwich structures are considered. The presented methodologies cover the simulation of the dynamic response of a structure during a low velocity impact event including the prediction of the internal non-visible or barely visible damage that develops during the impact. Additionally, methods for the prediction of the compression-after-impact strength are presented. In order to permit an accurate and efficient calculation of deformations and stresses in sandwich structures, special finite-element formulations have been developed. A comparison of simulation results with experimental data is presented for a two-stringer monolithic panel and for a honeycomb sandwich plate. The examples demonstrate that the presented methodologies can be used to quickly assess the damage tolerance of composite structures.
Efficient prediction of damage resistance and tolerance of composite aerospace structures
Wirksame Vorhersage des Beschädingungsresistenz und -toleranz bei Raumfahrzeugstrukturen aus Verbundwerkstoffen
2008
10 Seiten, 18 Quellen
Aufsatz (Zeitschrift)
Englisch
Verbundbauteil , dynamisches Verhalten , Finite-Elemente-Methode , Vorhersage , Schlagfestigkeit , Sandwich-Bauweise , Bruchmechanismus , Raumflugzeug , Spannungsberechnung , Rechnersimulation , Versuchsergebnis , Anwendung in der Luft- und Raumfahrt , Belastungstoleranz , Verbundwerkstoffmechanik , experimentelle Daten
Efficient prediction of damage resistance and tolerance of composite aerospace structures
SAGE Publications | 2008
|Efficient prediction of damage resistance and tolerance of composite aerospace structures
Online Contents | 2008
|Damage Tolerance Concept for Aerospace Structures
British Library Online Contents | 1994
|Investigation of impact and damage tolerance in advanced aerospace composite structures
Online Contents | 2003
|Investigation of impact and damage tolerance in advanced aerospace composite structures
Kraftfahrwesen | 2003
|