Search for dissertations about: "shear-localization"

Found 3 swedish dissertations containing the word shear-localization.

2. 1. Influence of Microstructure on Chip Formation - Machining Aero Engine Alloys

   Author : Stefan Cedergren; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Superalloy; Alloy 718; Ti-6Al-4V; Inconel 718; segmented chip; shear-localization;

   Abstract : Aero engine materials such as nickel-iron and titanium based alloys are known to be very difficult to machine. They are also known to produce shear-localized chips; a type of chip which is associated with both an increase of the tool wear and the vibration levels during machining. READ MORE

4. 2. Non-local models in manufacturing simulations

   Author : Olufunminiyi Abiri; Miguel Vaz; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Material Mechanics; Materialmekanik;

   Abstract : Ductile fracture presents challenges with respect to material modelling andnumerical simulations of localization. The strain and damage localization maybe unwanted as it indicates a failure in the process or, as in the case ofmachining and cutting, a wanted phenomenon to be controlled. READ MORE

5. 3. Simplifications of non-local damage models

   Author : Olufunminiyi Abiri; Matti Ristinmaa; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Material Mechanics; Materialmekanik;

   Abstract : Ductile fracture presents challenges with respect to material modelling and numerical simulations of localization. The strain and damage localization may be unwanted as it indicates a failure in the process or, as in the case of machining and cutting, a wanted phenomenon to be controlled. READ MORE