Essays about: "Komatsu"

Showing result 1 - 5 of 23 essays containing the word Komatsu.

  1. 1. The design of a hydraulic equalizer bar for the feeding mechanism on forest harvester heads

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Arvid Söderlund; [2023]
    Keywords : Harvester; Harvester head; Komatsu Forest; Hydraulics; Equalizer bar; Parallellstag; Stag; Skogsmaskin; Skördare; Aggregat; Skog;

    Abstract : Due to the importance of a correct tree placement and the wear that occurs to equalizer bars inharvester heads, Komatsu Forest AB in Umeå was interested if the bar could be replaced with ahydraulic system. According to Komatsu, the problems were that the equalizer bars that are responsible forsynchronizing the delimbing knives and feeding mechanism add weight, take up space and have atendency to break before their life expectancy. READ MORE

  3. 2. Crosscap States in Integrable Spin Chains

    University essay from KTH/Fysik

    Author : Christopher Ekman; [2022]
    Keywords : Theoretical Physics; Mathematical Physics; Integrability; Integrable Systems; Spin chains; Heisenberg model; Integrable Boundary States; Crosscap states; Teoretisk fysik; Matematisk fysik; Integrabilitet; Integrabla system; Spinnkedjor; Heisenbergmodellen; Integrabla gränstillstånd; Crosscaptillstånd;

    Abstract : We consider integrable boundary states in the Heisenberg model. We begin by reviewing the algebraic Bethe Ansatz as well as integrable boundary states in spin chains. Then a new class of integrable states that was introduced last year by Caetano and Komatsu is described and expanded. We call these states the crosscap states. READ MORE

  4. 3. A bonded discrete element approach to simulate loading with hydraulic mining excavators

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Carl Andersson; [2021]
    Keywords : DEM; bonded DE; granular material; hydraulic excavator; wear; Archard s wear law; LS-DYNA; simulation;

    Abstract : When operating hydraulic mining excavators the loading equipment is exposed to harsh conditions which lead to extensive wear of the equipment, especially the bucket and bucket teeth. Simulations are used to better understand the wear development and to evaluate new methods to operate excavators more efficiently. READ MORE

  5. 4. Design of energy storage application for forest harvester

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Samuel Hedström; [2020]
    Keywords : Harvester; Komatsu forest; Hydraulics; Accumulator Energy storage; Hybrid;

    Abstract : Komatsu Forest AB in Umeå saw an opportunity to increase performance during fast varying loads, e.g., when starting to feed after the felling cut, that proved more difficult to reach with their new line of stage V forest harvesters. READ MORE

  6. 5. DEVELOPMENT OF FATIGUE TESTING METHOD OF FORWARDER BUNK

    University essay from Umeå universitet/Institutionen för fysik

    Author : Tonie Isaksson; [2019]
    Keywords : fatigue; test; design; forwarder; mechanics; structural; machinery; strength; stress; strain;

    Abstract : The fatigue phenomena is one of the most common causes of failures in structural mechanics and is due to repeatedly applied loads. Komatsu Forest AB, one of the largest manufacturers of forest machines on planet Earth was in need of a fatigue life test of a forwarder bunk which exposes the bunk in a realistic way. READ MORE