Search for dissertations about: "branch switching"

Showing result 1 - 5 of 10 swedish dissertations containing the words branch switching.

2. 1. Co-rotational beam elements in instability problems

   Author : Jean-Marc Battini; KTH; []
   Keywords : instability; co-rotational mehtod; branch-switching; beam element; warping; plastic buckling. post-bifurcation; NATURAL SCIENCES; NATURVETENSKAP;

   Abstract : The purpose of the work presented in this thesis is to implement co-rotational beam elements and branch-switching procedures in order to analyse elastic and elastoplasticinstability problems. For the 2D beam elements, the co-rotational framework is taken from Crisfield [23]. READ MORE

4. 2. Plastic instability analysis of plane frames using a co-rotational approach

   Author : Jean-Marc Battini; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Plastic instability; Co-rotational method; Branch-switching; Beam element; Plastic buckling; Post-bifurcation; Building engineering; Byggnadsteknik;

   Abstract : .... READ MORE

5. 3. Stability of statically and periodically loaded structures

   Author : Ingrid Svensson; Hållfasthetslära; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; hydraulics; Mechanical engineering; Produktionsteknik; Production technology; experiments; damping; impacts; branch switching; dynamic stability; deflation; path following; vibrationer; akustik; vakuumteknik; hydraulik; Maskinteknik; vibration and acoustic engineering; vacuum technology;

   Abstract : In this thesis different kinds of stability phenomena are analysed. Firstly the quasi-static behaviour of an elastic structure is studied for increasing loading. READ MORE

6. 4. Distributed Coordination in Multiantenna Cellular Networks

   Author : Rasmus Brandt; Mats Bengtsson; Joakim Jaldén; Ignacio Santamaría; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; multicell MIMO; base station clustering; coordinated precoding; branch and bound; coalitional game theory; intercluster interference; CSI acquisition; hardware impairments; discrete rate selection; Electrical Engineering; Elektro- och systemteknik;

   Abstract : Wireless communications are important in our highly connected world. The amount of data being transferred in cellular networks is steadily growing, and consequently more capacity is needed. This thesis considers the problem of downlink capacity improvement from the perspective of multicell coordination. READ MORE

7. 5. On the design of hybrid DC-breakers consisting of a mechanical switch and semiconductor devices

   Author : Jesper Magnusson; Göran Engdahl; Staffan Norrga; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; DC; circuit breaker; hybrid breaker; DC systems; DC; brytare; hybridbrytare; likström;

   Abstract : The interest of using direct current in networks for both transmission and distribution of power is increasing due to the higher efficiency compared to the alternating current used today. As no natural zero crossings exist in direct current, the interruption of fault currents becomes a challenge. READ MORE