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Jarkko Niiranen

Professori (Associate professor), Computational Structural Engineering

Department of Civil Engineering (www)

Associate Professor, Computational Structural Engineering

Department of Civil Engineering (www)
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Person profile

PROFESSUURI

Heinäkuusta 2019 lähtien olen työskennellyt rakentamisen laskennallisen tekniikan vakinaistettuna professorina Aalto-yliopiston rakennustekniikan laitoksella -- määräaikaisen apulaisprofessorikauden 2013--2019 jälkeen. Vuosina 2013--2018 olin kuitenkin pääosin virka-vapaalla professuurista, koska työskentelin Suomen Akatemian rahoittamana akatemiatutkijana. Vuonna sain nimityksen August-Wilhelm Scheer Visiting Professor -positioon Münchenin teknilliseen yliopistoon (TUM) ja samalla minulle myönnettiin status Honorary Fellow of TUM Institute for Advanced Study (TUM-IAS).

ALA

Voin ylpeänä todeta -- näinä ylimainonnan ja sekasorron aikoina -- että toimin alalla, jonka laajamittainen digitalisoituminen alkoi jo 1970- ja 1980-luvuilla elementtimenetelmään (FEM) perustuvien ohjelmistojen kehittyessä, pohjautuen elementtimenetelmän uranuurtajainsinöörien ja -matemaatikkojen tutkimuksiin, joiden juuret ovat Hrennikoffin ja Courantin matemaattisissa julkaisussa 1940-luvulta.

FOKUS

Tutkimusryhmäni teoreettinen fokus on lähellä omaa tutkimustaustaani teoreettisen ja sovelletun mekaniikan ja numeerisen analyysin risteysalueella, fokuksena laskennallinen mekaniikka, rakenteiden mekaniikka ja laskennallinen rakennetekniikka. Tutkimustiimini keskittyy kiinteän aineen mekaniikan ja rakenteiden mekaniikan malleihin ja laskennallisiin menetelmiin, erityisesti elementtimenetelmän (FEM) ja isogeometrisen analyysin (IGA) teoriaan ja sovelluksiin ohuille rakenteille kuten laatoille, kuorille ja palkeille, yhdistettynä sekä klassisiin (yhden mittakaavan) että yleistettyihin (monen mittakaavan) kontinuumiteorioihin. Tutkimuksemme liikkuu kontinuumimekaniikan malleista, numeeristen menetelmien kautta ohjelmointiin, ohjelmistoihin ja insinöörisovelluksiin kuten rakenneanalyysiin ja rakenteiden suunnitteluun -- sekä myös tietokoneavusteisen suunnittelun / rakentamisen tietomallinnuksen (CAD / BIM), tietokoneavusteisen analyysin / elementtianalyysin (CAE / FEA) ja tietokoneavusteisen valmistuksen (CAM) sovelluksiin. Materiaalin mikrorakenteen mallintaminen on yksi laskennallisen lähestymistapamme tärkeä tavoite.

Tutkimusryhmäni soveltava fokus on pienemmän mittakaavan monitahoisten Design+Analysis -tiimien tutkimus- ja opetusprojekteissa, jotka keskittyvät rakennetekniikan laskennallisiin menetelmiin yhdistettynä parametriseen ja algoritmiseen arkkitehtuuriin ja muotoiluun. Painopisteenä ovat tällä hetkellä isogeometriset menetelmät ohutseinämäisille rakenteille. Uudet materiaalit ja digitaaliset valmistusmenetelmät ovat aihepiirejä, jotka on tarkoitus pitää tutkimusfokuksen rinnalla oleellisina sovelluksiin liittyvinä näkökulmina. Materiaalien mikrorakenteen mallintaminen on laskennallisen lähestymistapamme yksi tärkeä tavoite.

YHTEISTYÖ

Kaiken kaikkiaan olemme kiinnostuneita sekä akateemisesta yhteistyöstä että teollisuusyhteistyöstä edellä mainituilla aloilla.

Person profile

PROFESSORSHIP

Since July 2019, I have work as a tenured Associate Professor in Computational Structural Engineering at the Aalto University Department of Civil Engineering -- after an Assistant Professor period for 2013--2019. During 2013--2018, I was on leave from the professorship since I work as an Academy Research Fellow funded by Academy of Finland. In 2018, I was appointed as August-Wilhelm Scheer Visiting Professor at Technische Universität München (TUM) and Honorary Fellow of TUM Institute for Advanced Study (TUM-IAS).

FIELD

I am proud to note -- in these days of hype and confusion -- that I work in a field in which digitalization started on large scale in the 1970s and 1980s via the software developments of the Finite Element Method (FEM) for which the seminal contributions of engineers and mathematicians date back to the 1950s and 1960s, having roots in the mathematical works of Hrennikoff and Courant in the 1940s. It should be emphasized that typically the focus of computational engineering is neither in organizing simple data in a digital form for data mining nor in brute force number crunching rather than in making computers to simulate, via physico-mathematical models and mathematical algorithms, the laws of nature for predicting the consequences of complex (chemico-physical) phenomena taking place in nature or in engineering artifacts -- phenomena that are most often impossible, or far too expensive, to implement in laboratory environments.

FOCUS

The theoretical focus of my research group is close to my personal research background in the crossroads of Theoretical and Applied Mechanics and Numerical Analysis with a focus on Computational Mechanics, Structural Mechanics, Mechanics of Materials and Computational Structural Engineering. My research team focuses on models and methods for mechanics of solids and structures, especially on finite element methods (FEM) and isogeometric analysis (IGA) for mechanics of thin structures, such as plates, shells and beams, combined with both (single-scale) classical and (multi-scale) generalized continuum theories. Our activities range from continuum models and related numerical methods all the way down to programming, software issues and applications, such as structural analysis and design as well as integration of Computer-Aided Design / Building Information Modeling (CAD / BIM), Computer-Aided Engineering / Finite Element Analysis (CAE / FEA) and Computer-Aided Manufacturing (CAM).

The applicational focus of my research group is on small-scale research and teaching projects accomplished by multi-faceted Design+Analysis teams focusing on computational methodologies in structural engineering combined with parametric and algorithmic architecture and design. Our primary focus is now on isogeometric methods for thin-walled structures. New materials and digitalized production technologies will be essential side topics as well, with links to research groups of our site university working on complex materials and digital design methodologies, especially. Modeling materials with a microstructure is an important goal of our computational approach.

COLLABORATION

Altogether, we are interested in collaboration within both academic research topics and ambitious industrial applications in the aforementioned fields.

Background

During my MSc studies and after the graduation, I worked as a Structural Analyst Trainee (KCI Konecranes VLC, 1995–1996) and then as a Structural Analysis Software Developer for a few years (Engineering Office FEMdata, 1997–2002), before starting my doctoral studies (Department of Mathematics, Helsinki University of Technology, 2002–2006).

After finishing my DSc Thesis, I have worked as an Assistant in Structural Mechanics (Department of Structural Engineering and Building Technology, Helsinki University of Technology, 2006–2008), Academy of Finland Post-doctoral Researcher (Department of Civil and Structural Engineering, Aalto University School of Engineering, 2009–2012), Teaching Researcher (2012–2013) and Visiting Post-doctoral Research Fellow (Institute for Applied Mathematics and Information Technologies, Pavia, National Research Council, Italy, 2012–2013).

I was appointed as Assistant Professor in Computational Structural Engineering at the Department of Civil and Structural Engineering, Aalto University School of Engineering, in March 2013, and as soon after as Academy Research Fellow for 2013–2018. In 2019, I was appointed as a tenured Associate Professor.

Background

Maisteriopintojeni aikana ja diplomi-insinööriksi valmistumisen jälkeen työskentelin muutaman vuoden lujuuslaskennan alalla harjoittelijana (KCI Konecranes VLC, 1995–1996) ja ohjelmistonkehittäjänä (Insinööritoimisto FEMdata, 1997–2002), kunnes aloitin jatko-opinnot (Matematiikan laitos, Teknillinen korkeakoulu, 2002–2006).

Suoritettuani tohtorintutkinnon työskentelin rakenteiden mekaniikan assistentina (Rakenteiden mekaniikan laboratorio, Teknillinen korkeakoulu, 2006–2008), Suomen Akatemian tutkijatohtorina (Rakennustekniikan laitos, Aalto-yliopisto, 2009–2012), opettavana tutkijana (2012–2013) sekä vierailevana post-doc-tutkijana (Institute for Applied Mathematics and Information Technologies, Pavia, National Research Council, Italia, 2012–2013).

Minut nimitettiin rakentamisen laskennallisen tekniikan apulaisprofessoriksi Aalto-yliopiston Insinööritieteiden korkeakoulun Rakennustekniikan laitokselle maaliskuussa 2013 ja pian tämän jälkeen akatemiatutkijaksi vuosiksi 2013–2018. Vuonna 2019 minut nimitettiin vakinaiseksi professoriksi.

Quote

MOTTO: "Take a closer look...and a broad view – ignore the rest!" [by myself] MOTTÖ: "You cannot have everything. Where would you put it?" [by Lemmy Kilmister from Motörhead]

Keywords

Generalized Continuum Mechanics
isogeometric analysis
finite element methods
computational mechanics
structural analysis
computational structural engineering
thin structures
Structural Engineering
theoretical and applied mechanics
Numerical analysis
Metamaterials

Contact information

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F-3118-2013

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Work web site

http://users.tkk.fi/~jakke74/

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Room number

R 232

CV

Beside my professional background, field of research and research focuses desribed above, I briefly summarize my academic activities below. For more information on research, please see my personal Research Page or the information in Aalto Research Portal.

EDUCATION

Pedagogical studies (25 cr), Aalto University, 2016–2019
Doctor of Science (Tech.), Helsinki University of Technology, 2007
Master of Science (Tech.), Helsinki University of Technology, 2000
Matriculation Examination, Sveitsinrinteen lukio, 1991

AWARDS AND GRANTS

Editor’s Choice Selection, Journal of Constructions Management (2019)
August-Wilhelm Scheer Visiting Professor, Honorary Fellow of Institute for Advanced Study (Tehnische Universität München), 2018
Academy Research Fellowship (Academy of Finland), 2013–2018
Postdoctoral Researcher’s grant for working abroad (Tutkijat Maailmalle union of foundations), 2011
Postdoctoral Researcher’s grant for working abroad and hosting a visitor (Finnish Academy of Science and Letters), 2011
Nomination for the Best Paper of the Year Award (Journal of Structural Mechanics), 2009
Postdoctoral Researcher’s grant for working abroad (Finnish Academy of Science and Letters), 2009
Postdoctoral Researcher’s project (Helsinki University of Technology, refused), 2009–2011
Postdoctoral Researcher’s project (Academy of Finland), 2009–2012

POSITIONS OF TRUST

Member of IUTAM's General Assembly (2019–)
Member of the Finnish National Committee on Theoretical and Applied Mechanics (2019–2021)Editorial Board Member and Associate Editor of Mathematics and Mechanics of Solids (2019–)
Executive Committee Member of NoACM/ECCOMAS (2018–)
Chairman, XIII Finnish Mechanics Days (2018, 150 participants)
Editor-in-Chief, Journal for Structural Mechanics (2018–, founded in 1968)
Member of Scientific Board, ICCCBE Conference of International Society for Computing in Civil and Building Engineering (2018)
Editorial Board Member, Journal for Structural Mechanics (2015–)
Member of Scientific Board, XI Finnish Mechanics Days (2012)

MEMBERSHIPS

German Association for Computational Mechanics (2017–2019)
European Mechanics Society (2016–)
The Finnish Mathematical Society (2016–)
Society of Industrial and Applied Mathematics (2008–2011)
International Association for Computational Mechanics (2005–, by NoACM)
European Community on Computational Methods in Applied Sciences (2005–, by NoACM)
Nordic Association for Computational Mechanics (2005–)
Finnish Association for Structural Mechanics (2005–)

LEADERSHIP IN EDUCATION

Member of Academic Affairs Committee of School of Engineering (2018–)
Responsible Professor of BSc Major in Mechanical and Civil Engineering (yearly intake 150 students; 2017–)

SUPERVISION

From 2016 on, I have supervised several post-doctoral researchers.
For the supervision of Doctoral Dissertations, Master's Theses and Bachelor's Theses, please see my Teaching Page.

TEACHING

For the list of courses as responsible teacher, lecturer, coordinator or teaching assistant, please see my Teaching Page.

OTHER ACADEMIC ACTIVITIES

Peer-reviewer for tens of articles in several top or leading journals of of applied mathematics, theoretical and applied mechanics and engineering.
Organizer for several minisymposia in international conferences on applied mathematics, theoretical and applied mechanics and engineering.
Several invited talks in many universities and research institutes.

CV

Beside my professional background, field of research and research focuses desribed above, I briefly summarize my academic activities below. For more information on research, please see my personal Research Page or the information in Aalto Research Portal.

EDUCATION

Pedagogical studies (25 cr), Aalto University, 2016–2019
Doctor of Science (Tech.), Helsinki University of Technology, 2007
Master of Science (Tech.), Helsinki University of Technology, 2000
Matriculation Examination, Sveitsinrinteen lukio, 1991

AWARDS AND GRANTS

Editor’s Choice Selection, Journal of Constructions Management (2019)
August-Wilhelm Scheer Visiting Professor, Honorary Fellow of Institute for Advanced Study (Tehnische Universität München), 2018
Academy Research Fellowship (Academy of Finland), 2013–2018
Postdoctoral Researcher’s grant for working abroad (Tutkijat Maailmalle union of foundations), 2011
Postdoctoral Researcher’s grant for working abroad and hosting a visitor (Finnish Academy of Science and Letters), 2011
Nomination for the Best Paper of the Year Award (Journal of Structural Mechanics), 2009
Postdoctoral Researcher’s grant for working abroad (Finnish Academy of Science and Letters), 2009
Postdoctoral Researcher’s project (Helsinki University of Technology, refused), 2009–2011
Postdoctoral Researcher’s project (Academy of Finland), 2009–2012

POSITIONS

Member of IUTAM's General Assembly (2019–)
Member of the Finnish National Committee on Theoretical and Applied Mechanics (2019–2021)
Editorial Board Member and Associate Editor of Mathematics and Mechanics of Solids (2019–)
Executive Committee Member of NoACM/ECCOMAS (2018–)
Chairman, XIII Finnish Mechanics Days (2018, 150 participants)
Editor-in-Chief, Journal for Structural Mechanics (2018–, founded in 1968)
Member of Scientific Board, ICCCBE Conference of International Society for Computing in Civil and Building Engineering (2018)
Editorial Board Member, Journal for Structural Mechanics (2015–)
Member of Scientific Board, XI Finnish Mechanics Days (2012)

MEMBERSHIPS

German Association for Computational Mechanics (2017–2019)
European Mechanics Society (2016–)
The Finnish Mathematical Society (2016–)
Society of Industrial and Applied Mathematics (2008–2011)
International Association for Computational Mechanics (2005–, by NoACM)
European Community on Computational Methods in Applied Sciences (2005–, by NoACM)
Nordic Association for Computational Mechanics (2005–)
Finnish Association for Structural Mechanics (2005–)
From 2016 on, I have supervised several post-doctoral researchers.

LEADERSHIP IN EDUCATION

Member of Academic Affairs Committee of School of Engineering (2018–)
Responsible Professor of BSc Major in Mechanical and Civil Engineering (yearly intake 150 students; 2017–)

SUPERVISION

From 2016 on, I have supervised several post-doctoral researchers.
For the supervision of Doctoral Dissertations, Master's Theses and Bachelor's Theses, please see my Teaching Page.

TEACHING

For the list of courses as responsible teacher, lecturer, coordinator or teaching assistant, please see my Teaching Page.

OTHER ACADEMIC ACTIVITIES

Peer-reviewer for tens of articles in several top or leading journals of of applied mathematics, theoretical and applied mechanics and engineering.
Organizer for several minisymposia in international conferences on applied mathematics, theoretical and applied mechanics and engineering.
Several invited talks in many universities and research institutes

Publications

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