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Micromechanics-based finite element modeling of sandwich structures

Total Cost €


EC-Contrib. €






 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.

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

Project "SANDFECH" data sheet

The following table provides information about the project.


Organization address
address: OTAKAARI 1
city: ESPOO
postcode: 2150

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
 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


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


 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.


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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The information about "SANDFECH" are provided by the European Opendata Portal: CORDIS opendata.

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