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SANDFECH SIGNED

Micromechanics-based finite element modeling of sandwich structures

Total Cost €

0

EC-Contrib. €

0

Partnership

0

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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.

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

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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