Development of a Model Order Reduced Arbitrary Lagrangian Eulerian ( MORALE ) Formulation for Structures Subjected to Dynamic Moving Loads

International Journal for Numerical Methods in Engineering, vol. 126

Abstract

ABSTRACT Fast and efficient simulation strategies are a basic requirement of technologies such as digital twins. Particularly for roadway infrastructure, recent developments have demonstrated that the arbitrary Lagrangian Eulerian (ALE) formulation can be utilized to improve computational efficiency, when simulating the response of such pavement structures subjected to moving loads. It is also well‐established in literature, that model order reduction (MOR) techniques significantly enhance calculation speed. This contribution details the combination of both these tools into a novel model order reduced arbitrary Lagrangian Eulerian (MORALE) formulation. Both hyperelastic and viscoelastic material models are considered in this work. Transient simulations of pavement structures subjected to moving loads are then carried out with the developed framework, and these show a significant enhancement in computational speed and efficiency over conventional simulation techniques. Also in this work, a comprehensive breakdown of the computational costs involved in using the MORALE formulation is provided and analysed. Such an efficient and fast simulation framework is of vital importance in technologies such as digital twins of roadway infrastructure (like pavements), as it enables engineers to quickly run what‐if analyses and make informed decisions about the management of the structure under consideration.

Authors 6

1. Atul Anantheswar

   Technische Universität Dresden

   Affiliation as printed

   Institute for Structural Analysis, Technische Universität Dresden Dresden Germany

2. Jannick Kehls Aachen Institute of Applied Mechanics

   RWTH Aachen University

   Affiliation as printed

   Institute of Applied Mechanics, RWTH Aachen University Aachen Germany

3. Ines Wollny

   Technische Universität Dresden

   Affiliation as printed

   Institute for Structural Analysis, Technische Universität Dresden Dresden Germany

4. Tim Brepols Aachen Institute of Applied Mechanics

   RWTH Aachen University

   Affiliation as printed

   Institute of Applied Mechanics, RWTH Aachen University Aachen Germany

5. Stefanie Reese Aachen Institute of Applied Mechanics

   University of Siegen · RWTH Aachen University

   Affiliation as printed

   Institute of Applied Mechanics, RWTH Aachen University Aachen Germany

   University of Siegen Siegen Germany

6. Michael Kaliske

   Technische Universität Dresden

   Affiliation as printed

   Institute for Structural Analysis, Technische Universität Dresden Dresden Germany