Search for dissertations about: "cold forming"

Showing result 1 - 5 of 60 swedish dissertations containing the words cold forming.

2. 1. Modeling of Cold Pilgering of Tubes

   Author : Yağız Azizoğlu; Lars-Erik Lindrgren; Denis Sornin; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cold pilgering; finite element method; tube forming; tool elasticity; roll flattening; Material Mechanics; Materialmekanik; Steel Forming and Surface Engineering;

   Abstract : Cold pilgering is a challenging tube forming process in terms of modeling due to the complexity in kinematic of tools, friction condition and material behavior. The process development has mostly been based on simple formulas and costly full-scale tryouts. READ MORE

4. 2. Modelling Aspects in Forming and Welding of Nickel-Base Superalloys

   Author : Lluís Pérez Caro; Mats Oldenburg; Eva-Lis Odenberger; Juan Carlos Cante Teran; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; alloy 718; Haynes 282; cold forming; hot forming; material characterization; GISSMO; welding; heat treatment; manufacturing chain; springback; shape distortions; dynamic strain aging; DSA; microstructure; Hållfasthetslära; Solid Mechanics;

   Abstract : The reduction of fuel consumption and carbon dioxide emissions are currently a key factor for the aviation industry because of major concerns about climate change and more restrictive environmental laws. One way to reduce both fuel consumption and CO2 emissions is by significantly decreasing the weight of vehicles while increasing the efficiency of the engine. READ MORE

5. 3. Resistance of cold-formed high strength steel sections : Effect of cold-formed angle

   Author : Anh Tuan Tran; Lars Bernspång; Ove Lagerqvist; Torsten Höglund; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Stålbyggnad; Steel Structures;

   Abstract : Cold-formed steel members are increasingly used in industrial and civil construction. Their use allows optimised member cross sections and shapes, thereby reducing the amount of steel used as well as the weight of the structures and, consequently, reducing harmful effects on the environment. READ MORE

6. 4. Modelling of Forming and Welding in Alloy 718

   Author : Lluís Pérez Caro; Mats Oldenburg; Eva-Lis Odenberger; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Forming; welding; Alloy 718; damage; GISSMO; failure; Hållfasthetslära; Solid Mechanics;

   Abstract : The reduction of fuel consumption and carbon dioxide emissions are currently a key factor for the aviation industry due to major concerns about climate change and more restrictive environmental laws. One way to reduce both fuel consumption and CO2 emissions is by significantly decreasing the vehicle’s weight while increasing engine's efficiency. READ MORE

7. 5. Experimental and computational investigation of the roll forming process

   Author : Michael Lindgren; Högskolan Dalarna; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Rollforming; Roll Forming; Flexible roll forming; Rullformning; Simulering och experimentell undersökning av rullformningsprocessen;

   Abstract : One of the first questions to consider when designing a new roll forming line is the number of forming steps required to produce a profile. The number depends on material properties, the cross-section geometry and tolerance requirements, but the tool designer also wants to minimize the number of forming steps in order to reduce the investment costs for the customer. READ MORE