Sökning: "modelling chain"

Visar resultat 16 - 20 av 131 avhandlingar innehållade orden modelling chain.

  1. 16. Modelling Aspects in Forming and Welding of Nickel-Base Superalloys

    Författare :Lluís Pérez Caro; Mats Oldenburg; Eva-Lis Odenberger; Juan Carlos Cante Teran; Luleå tekniska universitet; []
    Nyckelord :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;

    Sammanfattning : 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. LÄS MER

  3. 17. Application of operations research in operative planning in the forest industry

    Författare :Patrik Flisberg; Mikael Rönnqvist; Jens Clausen; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; operative planning; routing; forestry; modelling; Decision Support System; optimization; OR in practice; Optimization; systems theory; Optimeringslära; systemteori;

    Sammanfattning : The focus of this thesis is the use of Operations Research for pplications in the forest industry. Optimization models and methods have been developed for problems in the forest supply chain and they have been integrated in decision support systems. The problems considered in this thesis are operative with a planning horizon of less than a month. LÄS MER

  4. 18. Intermodal Road-Rail Transportation for Express Transport Services

    Författare :Sofia Ohnell; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; transport services; Intermodal transportation; transport systems; modelling; express transportation;

    Sammanfattning : Express transport services are produced in highly modularised transport systems, a fact that implies that one subsystem can be exchanged for another without causing a need for major changes in other parts of the system. Express goods are not common on a large scale in freight railway transport systems, as those are often not considered reliable enough for time-critical goods. LÄS MER

  5. 19. Improving Machining System Performance through designed-in Damping : Modelling, Analysis and Design Solutions

    Författare :Lorenzo Daghini; Cornel Mihai Nicolescu; Miroslav Píška; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Machining performance; Cutting stability; Passive damping; High Damping Interface; Boring bar; Turret; SRA - Production; SRA - Produktion;

    Sammanfattning : With advances in material technology, allowing, for instance, engines to withstand higher combustion pressure and consequently improving performance, comes challenges to productivity. These materials are, in fact, more difficult to machine with regards to tool wear and especially machine tool stability. LÄS MER

  7. 20. Development of Small-Scale Intermodal Freight Transportation in a Systems Context

    Författare :Johan Woxenius; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; transport chain; conceptual modelling; barrier; transshipment technology; transportation system; intermodal freight transportation; gateway terminal; combined transport; yransport network; technology implementation;

    Sammanfattning : An intermodal freight transportation system is characterised by the subsequent use of different transportation modes for moving goods stowed into unit loads from the consignor to the consignee. Typically, it involves a wide variety of activities, actors and resources, which implies a certain degree of technological as well as organisational complexity. LÄS MER