09. Konferenssit, seminaarit ja kokoomateokset / Conferences, Seminars and Compiled works

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Yliopiston järjestämien konferenssien kokoomateoksia / Conference proceedings of the university's events

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Browsing 09. Konferenssit, seminaarit ja kokoomateokset / Conferences, Seminars and Compiled works by Department "Department of Applied Mechanics"

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    Global buckling and post-buckling of web-core sandwich and stiffened panels: sensitivity to general corrosion
    (ICTWS 2014, 2014) Jelovica, Jasmin; Romanoff, Jani; Sovelletun mekaniikan laitos; Department of Applied Mechanics; Marine Technology; Insinööritieteiden korkeakoulu; School of Engineering
    Corrosion can lead to reduction of structural stiffness and strength. This paper investigates the influence of a reduction in the thickness of the plates as a result of general corrosion on sandwich panel buckling load and onset of plasticity. The results are compared to the stiffened panel of the same in-plane and bending stiffness. Current guidelines for corrosion protection threat these two structures equally. Load-shortening curves are obtained with the finite element method, with the kinematics being represented using two approaches: (1) equivalent single-layer with first-order shear deformation theory, and (2) a three-dimensional model of the actual geometry of the structure, modeled using shell and connector elements. The former is also used to identify the influence of corrosion on the stiffness coefficients and, consequently, the buckling load, also via analytical equation. The decrease of the buckling load is found higher in sandwich panel than in stiffened panel. The reduction is especially high in the case of the diffusion of moisture (water) into the core. The reason for the higher sensitivity of sandwich panel is a larger reduction of transverse shear stiffness opposite to the stiffener direction due to corrosion.
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    Proceedings of the Second FAROS Public Workshop, 30th September 2014, Espoo, Finland
    (Aalto University, 2014) Pawling, Rachel (editor); Montewka, Jakub (editor); Gonzalez Celis, Jose (editor); Sovelletun mekaniikan laitos; Department of Applied Mechanics; Research Group on Maritime Risk and Safety; Insinööritieteiden korkeakoulu; School of Engineering
    FAROS is an EC FP7 funded, three year project to develop an approach to incorporate human factors into Risk-Based Design of ships. The project consortium consists of 12 members including industry, academia and research institutes. The second FAROS Public Workshop was held in Dipoli Congress Centre in Otaniemi, Espoo, Finland, on the 30th of September 2014. The workshop included keynotes from industry, papers on risk models for aspects such as collision and grounding, fire and the human element, descriptions of parametric ship models and the overall approach being adopted in the FAROS project.