| 1. |
- Girhammar, Ulf Arne, et al.
(författare)
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Modeling of shear walls using finite shear connector elements based on continuum plasticity
- 2017
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Ingår i: Frontiers of Structural and Civil Engineering. - : Higher Education Press. - 2095-2430 .- 2095-2449. ; 11:2, s. 143-157
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Forskningsöversikt (refereegranskat)abstract
- Light-frame timber buildings are often stabilized against lateral loads by using diaphragm action of roofs, floors and walls. The mechanical behavior of the sheathing-to-framing joints has a significant impact on the structural performance of shear walls. Most sheathing-to-framing joints show nonlinear load-displacement characteristics with plastic behavior. This paper is focused on the finite element modeling of shear walls. The purpose is to present a new shear connector element based on the theory of continuum plasticity. The incremental load-displacement relationship is derived based on the elastic-plastic stiffness tensor including the elastic stiffness tensor, the plastic modulus, a function representing the yield criterion and a hardening rule, and function representing the plastic potential. The plastic properties are determined from experimental results obtained from testing actual connections. Load-displacement curves for shear walls are calculated using the shear connector model and they are compared with experimental and other computational results. Also, the ultimate horizontal load-carrying capacity is compared to results obtained by an analytical plastic design method. Good agreements are found.
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| 2. |
- Grundström, Christina, et al.
(författare)
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Family-owned manufacturing SMEs and innovativeness : A comparison between within-family successions and external takeovers
- 2012
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Ingår i: The Journal of Family Business Strategy. - : Elsevier. - 1877-8585 .- 1877-8593. ; 3:3, s. 162-173
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Tidskriftsartikel (refereegranskat)abstract
- The purpose of this article is to compare within-family successions and external-party takeovers in family-owned manufacturing SMEs to determine potential differences in how they are perceived and managed. This paper focuses on two long-term aspects of family businesses – their succession and their ability to innovate – defining innovativeness as an aspect of organisational culture. Based on ten case studies, the paper concludes that the values related to a firm’s context, influenced by the divesting party as well as by the choice of successor, create inertia, to the extent that only minor changes in innovation orientation are possible. External owners may focus to a greater extent on growth and new ways of innovating, while family-succeeded firms diversify so as not to abandon previous businesses. Intermediating factors, such as customer involvement, type of SME, and the acquirers’ motives, influence the innovative organisational culture and create explanatory links to innovation intensity and methodologies of innovation.
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| 3. |
- Grundström, Christina, 1965-, et al.
(författare)
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View and management of innovativeness upon succession in family-owned SMEs
- 2011
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Ingår i: International Journal of Innovation Management. - Amsterdam, Netherlands : Elsevier. - 1363-9196 .- 1757-5877. ; 15:3, s. 617-640
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Tidskriftsartikel (refereegranskat)abstract
- The purpose of this paper is to provide insights into how the successors of family-owned manufacturing SMEs view and manage innovativeness. Research into company takeovers mainly focuses on large companies and little is known about innovativeness in research on family-owned businesses, often SMEs. This paper presents findings from ten company successions, five of which describe family successions and five external ones. The paper points to that there is little difference in how various types of successor view and manage innovativeness. A successor is chosen with care and this also influences the view and management of innovativeness; other criteria seem to apply in the succession and radical changes can only be introduced if a number of contextual factors are managed properly. The paper also indicates that while financial constraints may limit innovations, a strong financial situation is not an antecedent for innovativeness.
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