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SANDFECH SIGNED

Micromechanics-based finite element modeling of sandwich structures

Total Cost €

0

EC-Contrib. €

0

Partnership

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 SANDFECH project word cloud

Explore the words cloud of the SANDFECH project. It provides you a very rough idea of what is the project "SANDFECH" about.

replaced    equivalent    cores    linear    buildings    ship    later    host    substitute    texas    form    micropolar    interdisciplinary    panels    motivated    averaged    decks    efficient    steel    bridge    global    modeling    lattices    marine    disseminated    homogenized    discrete    accounting    shipbuilding    formulated    periodic    finland    core    first    stiffened    economical    idea    sweden    conventional    savings    contrary    group    software    offers    continuum    modeled    accounts    aalto    micromechanics    material    limits    central    joints    model    instead    reddy    sense    straightforward    energetically    laser    small    meyer    engineering    beam    university    plates    computational    micromechanical    space    workshops    fuel    theoretical    finite    beams    models    structural    welded    plate    chalmers    energy    subsequently    shipyard    readily    turku    structures    sandwich    unidirectional    designs    simplified    flexible    residential    shipbuilders    prof    return    easily    theories   

Project "SANDFECH" data sheet

The following table provides information about the project.

Coordinator
AALTO KORKEAKOULUSAATIO SR 

Organization address
address: OTAKAARI 1
city: ESPOO
postcode: 2150
website: http://www.aalto.fi/en/

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Finland [FI]
 Project website https://www.researchgate.net/project/SANDFECH-Micromechanics-based-finite-element-modeling-of-sandwich-structures
 Total cost 249˙793 €
 EC max contribution 249˙793 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2016
 Funding Scheme MSCA-IF-GF
 Starting year 2017
 Duration (year-month-day) from 2017-08-23   to  2020-08-22

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    AALTO KORKEAKOULUSAATIO SR FI (ESPOO) coordinator 249˙793.00
2    Texas A&M University US (College Station) partner 0.00

Map

 Project objective

The use of novel steel sandwich panels in ship decks instead of conventional stiffened plates offers more economical and energy-efficient designs through material, space and fuel savings. To analyse the global structural response of a large ship within computational limits, the sandwich panels need to be modeled in an averaged (homogenized) sense without accounting for every small detail. Motivated by this, my objective is to develop simplified theoretical and computational micromechanics-based beam and plate models for sandwich panels that have unidirectional structural cores and flexible joints. The key theoretical modeling idea is to consider periodic panels as discrete lattices which are replaced by energetically equivalent, linear micropolar continuum beam and plate models. Subsequently, finite element models for the substitute-continuum beams and plates are formulated. Contrary to existing methods, the proposed approach includes all the necessary features. First, it fully accounts for flexible (e.g. laser-welded) joints of the panels. Second, the determination of all model parameters is straightforward. Third, the derived models can be easily implemented later in various readily available finite element software.

In addition to shipbuilding, structural core sandwich panels have applications in bridge engineering and residential buildings. The micromechanical aspect of this project is expected to provide new understanding of interdisciplinary issues in higher-order continuum theories. Such theories form a central topic in my host’s, Prof. J.N. Reddy’s research group at Texas A&M University in addition to beam and plate theories and finite elements. The results of this project are disseminated in workshops to shipbuilders at Meyer Turku shipyard (Finland) and to bridge researchers at Chalmers University of Technology (Sweden) during the return phase in the Advanced Marine Structures research group at Aalto University, Finland.

 Publications

year authors and title journal last update
List of publications.
2019 Anssi T. Karttunen, J.N. Reddy, Jani Romanoff
Two-scale constitutive modeling of a lattice core sandwich beam
published pages: 66-75, ISSN: 1359-8368, DOI: 10.1016/j.compositesb.2018.09.098
Composites Part B: Engineering 160 2019-10-15
2018 Anssi T. Karttunen, J.N. Reddy, Jani Romanoff
Micropolar modeling approach for periodic sandwich beams
published pages: 656-664, ISSN: 0263-8223, DOI: 10.1016/j.compstruct.2017.11.064
Composite Structures 185 2019-10-15
2019 Bruno Reinaldo Goncalves, Anssi T. Karttunen, Jani Romanoff
A nonlinear couple stress model for periodic sandwich beams
published pages: 586-597, ISSN: 0263-8223, DOI: 10.1016/j.compstruct.2019.01.034
Composite Structures 212 2019-10-15
2019 Praneeth Nampally, Anssi T. Karttunen, J.N. Reddy
Nonlinear finite element analysis of lattice core sandwich beams
published pages: 431-439, ISSN: 0997-7538, DOI: 10.1016/j.euromechsol.2018.12.006
European Journal of Mechanics - A/Solids 74 2019-10-15
2019 Anssi T. Karttunen, J.N. Reddy, Jani Romanoff
Two-scale micropolar plate model for web-core sandwich panels
published pages: 82-94, ISSN: 0020-7683, DOI: 10.1016/j.ijsolstr.2019.04.026
International Journal of Solids and Structures 170 2019-10-15

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