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  • 1.
    Höglund, Torsten
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering.
    A simple method for the design of aluminium structures2016In: Key Engineering Materials, Trans Tech Publications Inc., 2016, Vol. 710, p. 339-344Conference paper (Refereed)
    Abstract [en]

    Deflections at the serviceability limit state are often decisive in the design of aluminium structures due to the low elastic modulus. Where design is based on deflections, it may not be necessary to calculate the resistance exactly and simple conservative methods are sufficient. The proposed method may be used to generate a quick, approximate and safe solution, perhaps for the purpose of initial member sizing, with the opportunity to refine the calculation for final design. Another reason for the simple method is enhancing ease of use of Eurocode 9. The principal of the proposed method is to eliminate calculation of effective cross-sections by reducing the elastic resistance with the reduction factor for the most slender part of the cross-section or the factor for HAZ softening whichever is less. This means that you don't need to define the cross-section class. The disadvantage is that you don't utilize the plastic reserve for class 1 and 2 cross-sections, nor the redistribution of stresses in the post-buckling range of class 4 cross-sections or sections with HAZ. The procedure is similar to the method with permissible stresses familiar to most engineers.

  • 2.
    Höglund, Torsten
    KTH, Superseded Departments, Civil and Architectural Engineering.
    Aluminium Bridges in Sweden2004In: First International Conference and Exhibition Aluminium in Building and Construction, 2004Conference paper (Refereed)
  • 3.
    Höglund, Torsten
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.
    Att konstruera med stål, Läromedel för konstruktörer: Modul 6, Stabilitet för balkar och stänger2006Book (Other academic)
  • 4.
    Höglund, Torsten
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.
    CBZ-reglars bärförmåga vid upplag2012Report (Other academic)
  • 5.
    Höglund, Torsten
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.
    Stability of columns and beams2009Other (Other academic)
  • 6.
    Höglund, Torsten
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.
    Mazzolani, Federico
    Mandara, Alberto
    Innovative Issues of the New European Codification on Aluminium Shell Buckling2010In: Proceedings of the 11th International Aluminium Conference INALCO 2010, 2010Conference paper (Refereed)
  • 7.
    Höglund, Torsten
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.
    Nilsson, Lars
    Swedish Defence Material Administration .
    Aluminium in Bridge Decks and in a new Military Bridge in Sweden2006In: Structural Engineering International, ISSN 1016-8664, E-ISSN 1683-0350, Vol. 16, no 4, p. 348-351Article in journal (Refereed)
    Abstract [en]

    In this paper two different types of aluminium bridges in Sweden are presented: 1) Aluminium extrusion deck system for rehabilitation of road bridges 2) A military bridge for the armoured vehicle launched bridge system. Aluminium extrusion deck system for rehabilitation of road bridges has been developed as the deterioration of road bridges has becoming a serious problem in many Nordic countries. An increasing number of bridge decks are in such a poor condition that they must be replaced. This is mainly due to severe climate, the use of road salt in winter time and increasing traffic and load.

  • 8.
    Höglund, Torsten
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.
    Norlin, Bert
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.
    Static Design of Aluminium Structures2006In: Structural Engineering International, ISSN 1016-8664, E-ISSN 1683-0350, Vol. 16, no 4, p. 301-304Article in journal (Refereed)
    Abstract [en]

    This paper shows how the effective thickness concept is used in Eurocode 9 (prEN 1999-1-1 Design of aluminium structures, general structural rules [1]) to allow for local buck ling as well as strength reduction in the heat affected zone (HAZ) of welded members.

  • 9.
    Höglund, Torsten
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.
    Strömberg, Jan
    Kallformade profiler2006In: Att konstruera med stål, Läromedel för konstruktörer, Modul 7, Stålbyggnadsinstitutet , 2006Chapter in book (Refereed)
  • 10.
    Mahdavi Shahri, Meysam
    et al.
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Materials Technology.
    Höglund, Torsten
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.
    Sandström, Rolf
    KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Materials Technology.
    Eurocode 9 to estimate the fatigue life of friction stir welded aluminium panels2012In: Engineering structures, ISSN 0141-0296, E-ISSN 1873-7323, Vol. 45, p. 307-313Article in journal (Refereed)
    Abstract [en]

    Eurocode 9 is a standard that covers the design of building and engineering structures made from wrought and cast aluminium alloys. A part of the Eurocode 9 handles the design of aluminium structures susceptible to fatigue. Eurocode 9 has data for aluminium alloys and welded structures for conventional welding methods (fusion welding) except for friction stir welding processes. The present study compares fatigue test results from friction stir welded joints with fatigue curves of traditional fusion welded joints which are presented in Eurocode 9. The results are in reasonable agreement with experimental data and FEM predictions. This suggests that Eurocode 9 can be used for estimating the fatigue strength of friction stir welded joints.

  • 11. Mazzolani, F. M.
    et al.
    Höglund, Torsten
    KTH.
    Mandara, A.
    EC9 Second generation: Proposal for new imperfection factors for unstiffened aluminium shells2016In: 13th International Aluminium Conference, INALCO 2016, Trans Tech Publications Ltd , 2016, p. 433-438Conference paper (Refereed)
    Abstract [en]

    The paper summarizes a part of the activity currently carried out by the CEN/TC250 SC9 Committee, which is presently engaged in setting up the "Second Generation" of EC9 on aluminium structures. In particular, new expressions of imperfection reductions factors α for unstiffened shells are proposed. The new formulation, which is calibrated on the basis of simulation buckling data available in literature, corrects a small issue of the previous one, giving at the same time more reliable and consistent results.

  • 12. Misiek, T.
    et al.
    Norlin, Bert
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.
    Höglund, Torsten
    KTH.
    A look at European buckling curves for aluminium members2019In: Steel ConstructionArticle in journal (Refereed)
    Abstract [en]

    Numerical investigations of compression members made of aluminium are presented and recommendations for reorganizing the buckling classes and curves are derived from these. Finally, the curves are compared with test results

  • 13.
    Norlin, Bert
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering.
    Höglund, Torsten
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering.
    Bearing length on cold-formed sections2016In: Aluminium Constructions: Sustainability, Durability and Structural Advantages, Trans Tech Publications, 2016, Vol. 710, p. 421-426Conference paper (Refereed)
    Abstract [en]

    The effective bearing length of trapezoidal sheeting on cold formed sections at inner supports is 10 mm according to EN 1999-1-4 (aluminium) and EN 1993-1-3 (steel). In the original design provisions the effective bearing length on Z-sections was the actual width of the loaded flange. In order to find out the appropriate effective bearing length, FEM calculations were made on simply supported beams with C-, Z- and Sigma-cross-section. Contact elements between the trough of the trapezoidal sheeting and the loaded flange of the beam made it possible to evaluate the contact area. This area and the stresses in the trapezoidal sheeting show that the effective bearing length is very small for C-sections. For Z-sections and for Sigma sections with large folds in the web the contact area is the flange width, unless the flange width versus profile height is large and the plate thickness is small.

  • 14.
    Pourghazian, Hanif
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology.
    Höglund, Torsten
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering.
    Sheet metal profiles restrained by insulation blocks2008In: Thin-walled structures, ISSN 0263-8231, E-ISSN 1879-3223Article in journal (Other academic)
  • 15. Saal, Helmut
    et al.
    Misiek, Thomas
    Hoglund, Torsten
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.
    Determination of initial bow imperfections e(0) for second-order analysis of aluminum structures according to EN 1999-1-12016In: Stahlbau, ISSN 0038-9145, E-ISSN 1437-1049, Vol. 85, no 6, p. 409-U120Article in journal (Refereed)
    Abstract [en]

    The initial bow imperfection e(0) is required if structures are designed with the internal forces and moments from second-order analysis. The National Annex DIN EN 1999-1-1/NA/A1 as a NDP to 5.3.2(3) of DIN EN 1999-1-1 describes how e(0) may be calculated. Based on this, formulae are derived for calculating the relative initial bow imperfections e(0)/L for six very different types of cross sections which cover a very wide range. Linear as well as nonlinear M-N-interaction relations are used depending on the type of cross section. These formulae describe e(0)/L as product of functions of which the first depends on the cross section, the second on the proof strength f(o) and the third on relative slenderness, buckling class and interaction relation. The numerical evaluation of these formulae gives conservative limit values for e(0)/L. However, due to the wide range of the parameters these values will in general be that far on the safe side that the application of the formula with the relevant parameters is recommended. For members where fo due to the HAZ is variable over the cross section a linear and alternatively a nonlinear interaction relation may be used as safe approximation. This is demonstrated with a thin-walled circular tube.

  • 16.
    Trillkott, Stefan
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.
    Höglund, Torsten
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.
    Provning av förankringsplåt till svetsplåt för ugnsstativ, Scania Södertälje1997Report (Other academic)
  • 17.
    Trillkott, Stefan
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.
    Höglund, Torsten
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.
    Stuk, pop- och stansnitars bärförmåga2012Report (Other academic)
1 - 17 of 17
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  • ieee
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  • en-GB
  • en-US
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