Jarkko Niiranen

  • Rakentajanaukio 4, 02150 Espoo Finland

20032020

Research output per year

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Personal profile

Artistic and research interests

I work as a tenured Associate Professor in Computational Structural Engineering at Department of Civil Engineering, Aalto University.

During 2013–2018, I worked as an Academy Research Fellow funded by Academy of Finland. I was appointed as August-Wilhelm Scheer Visiting Professor at Technische Universität München (TUM) for May–August 2018, and accordingly Honorary Fellow of TUM Institute for Advanced Study (TUM-IAS).

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.

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 physico-mathematical models and numerical methods for the mechanics of solids and structures — touching such classical fields as 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 classical and 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). Most recently, I have been focusing on modeling lattice structures and metamaterials as well as the microstructure of 3D-printed metals.

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.

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).

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

Education/Academic qualification

Doctor of Science (Technology)

Master of Science (Technology), Engineering Physics

External positions

August-Wilhelm Scheer Visiting Professor 2018 at TUM

1 May 201815 Aug 2018

Keywords

  • Theoretical and Applied Mechanics
  • Computational structural engineering
  • Computational mechanics
  • Finite element methods
  • Thin structures
  • Generalized continuum mechanics
  • Isogeometric analysis
  • Mechanics of materials
  • Adaptive methods

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Research Output

Anisotropic strain gradient thermoelasticity for cellular structures : plate models, homogenization and isogeometric analysis

Khakalo, S. & Niiranen, J., 1 Jan 2020, In : JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS. 134, 36 p., 103728.

Research output: Contribution to journalArticleScientificpeer-review

  • 4 Citations (Scopus)

    A second strain gradient damage model with a numerical implementation for quasi-brittle materials with micro-architectures

    Nguyen, T. H. A. & Niiranen, J., 1 Mar 2020, In : MATHEMATICS AND MECHANICS OF SOLIDS. 25, 3, p. 515-546 32 p., 1081286519884695.

    Research output: Contribution to journalArticleScientificpeer-review

    4 Citations (Scopus)

    Editorial

    Niiranen, J., 1 Jan 2020, In : Rakenteiden mekaniikka. 53, 1, p. II 1 p.

    Research output: Contribution to journalEditorialScientific

    Open Access

    A six-variable quasi-3D model for static analysis of laminated composite plates using isogeometric analysis

    Tran, L. V., Abdel Wahab, M. & Niiranen, J., 1 Jan 2019, Proceedings of the 1st International Conference on Numerical Modelling in Engineering - Volume 1 Numerical Modelling in Civil Engineering, NME 2018. Wahab, M. A. (ed.). p. 135-142 8 p. (Lecture Notes in Civil Engineering; vol. 20).

    Research output: Chapter in Book/Report/Conference proceedingChapterScientificpeer-review

  • 1 Citation (Scopus)

    Continuum damage modelling of quasi-brittle materials by using the material point method

    Tran, Q. A., Nguyen, T., Sołowski, W. T. & Niiranen, J., 2019, Proceedings of the 32nd Nordic Seminar on Computational Mechanics. Niemi, A. H. & Koivurova, H. (eds.). p. 160-161 (Raportti / Oulun yliopisto, Konetekniikka ; no. 9).

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientific

    Projects

    CERES FoldS/ Niiranen

    Niiranen, J. & Kankkunen, T.

    01/01/202031/12/2020

    Project: Academy of Finland: Other research funding

    SMP 2018: Mekaniikkapäivät 2018

    Niiranen, J.

    01/05/201831/12/2018

    Project: Conferences and seminars

    Prizes

    Academy of Finland Postdoctoral Researcher

    Jarkko Niiranen (Recipient), 2009

    Prize: Award or honor granted for academic career

  • Academy of Finland Research Fellow

    Jarkko Niiranen (Recipient), 2013

    Prize: Award or honor granted for academic career

  • August-Wilhelm Scheer Visiting Professor 2017 / TUM Excellence Initiative

    Jarkko Niiranen (Recipient), 12 Dec 2017

    Prize: Award or honor granted for academic career

    Honorary Fellow of TUM Institute for Advanced Studies

    Jarkko Niiranen (Recipient), 12 Dec 2017

    Prize: Award or honor granted for academic career

    Activities

    Rakenteiden Mekaniikka - Journal of Structural Mechanics (Journal)

    Jarkko Niiranen (Editor-in-chief)
    2019

    Activity: Publication peer-review and editorial work typesMembership of an editorial board

    International Conference on Nonlinear Solid Mechanics

    Jarkko Niiranen (Organiser)
    16 Jun 201919 Jun 2019

    Activity: Participating in or organising an event typesChair of conference, workshop, panel, session or tutorial

    Rakenteiden mekaniikan seura ry. (External organisation)

    Jarkko Niiranen (Member)
    2019

    Activity: Membership typesPosition of trust in a society or network

    Linear and geometrically nonlinear analysis of microstrustural beams within generalized continua

    Jarkko Niiranen (Speaker)
    18 Jun 2019

    Activity: Talk or presentation typesConference presentation

    Nordic Seminar in Computationl Mechanics

    Jarkko Niiranen (Organiser)
    23 Oct 201925 Oct 2019

    Activity: Participating in or organising an event typesMembership of a scientific or program committee of a conference or seminar