Ein Verfahren zur Optimierung der Faserverlaeufe in Verbundwerkstoffen durch Minimierung der Schubspannungen nach Vorbildern der Natur

A method to optimize fiber arrangement in composite materials is developed and introduced. Herein fibers are arranged parallel to the principal stress trajectories of the loaded structure. Natural fiber orientations of tensile, compression and bending loaded biological structures are determined. It is shown that their fiber orientation is optimized for their loading situation. Engineering fiber structures are optimized with regard to minimized shear stresses between the fibers and in case of a plate with a hole are loaded in tensile testing. The tensile strength is increased by fiber orientation parallel to the stress trajectories in comparison to unidirectionary fiber orientation. By additional optimization of the distribution of the elastic modulus in composite structures an improvement in stress distribution is achieved. (orig.)SIGLEAvailable from TIB Hannover: ZA 5141(5406) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman