GAMM2025

Session

Plenary Lecture

PL

7 Apr 2025, 15:00

Lecture and Conference Centre

Conveners

Plenary Lecture: PL 1

• Wojciech Sumelka

Plenary Lecture: PL 2

• Kerstin Weinberg

Plenary Lecture: PL 3

• Tadeusz Burczyński

Plenary Lecture: PL 4

• Teofil Jesionowski

Plenary Lecture: PL 5

• Jörg Schröder

Plenary Lecture: PL 6

• Jerzy Warmiński

Plenary Lecture: PL 7

• Andrea Walther

Plenary Lecture: PL 8

• Błażej Skoczeń

749. Computational microstructure design: harnessing the synergy of numerical and experimental investigations

Lukasz Madej

07/04/2025, 15:00

The topic presents a concept of full-field microstructure-based models that can be considered digital shadows of the metallic material's microstructure during numerical simulation of thermo-mechanical treatment. Recent progress in the area of full-field modelling is directly driven by the development of modern metallic materials, often of a multiphase nature. Such microstructure types lead to...

750. Physics-Based Model Order Reduction in Digital Twins: Challenges and Opportunities in the Multi-Scale Material Setting

Karen Veroy-Grepl

08/04/2025, 11:00

Physics-based model order reduction presents a great potential for digital twins, providing highly accurate yet efficient approximations to solutions of parametrized partial differential equations. However, embedding such physics-based reduced order models in digital twin frameworks presents significant challenges. In this talk, we consider some of these challenges (as well as opportunities),...

751. Optimization-Based Control for Large-Scale and Complex Systems: When and Why Does It Work?

Lars Grüne

08/04/2025, 12:00

Model Predictive Control (MPC) and Reinforcement Learning (RL) are two of the most prominent methods for computing control laws based on optimization. In both cases, the resulting controllers approximate infinite-horizon optimal controllers, where the objective of the optimization may range from stabilization of a set-point to energy efficiency to yield maximization. However, for both methods...

783. Ceremony: Doctor Honoris Causa of PUT to Prof. Leszek Demkowicz

09/04/2025, 14:00

753. DPG Method on a New Road to Nonlinear Problems

Leszek Demkowicz

09/04/2025, 15:00

2025 marks the 17th anniversary of our first foundational paper on the Discontinuous Petrov- Galerkin method, in short the DPG method. In the talk, I will attempt to present DPG fundamentals for linear problems [1] illustrated with a few numerical examples, and an outlook at the generalization of the DPG methodology to nonlinear problems represented by nonlinear elasticity [2].

[1] L....

754. Resonances as a computational tool

Katharina Schratz

10/04/2025, 11:00

A large toolbox of numerical schemes to approximate the time dynamics in nonlinear PDEs has been meanwhile established, based on different discretization techniques such as discretizing the variation-of-constants formula (e.g., exponential integrators) or splitting the full equation into a series of simpler subproblems (e.g., splitting methods). In many situations these classical schemes allow...

755. On Nonlinear Oscillations

Utz von Wagner

10/04/2025, 12:00

Oscillations of nonlinear systems contain, compared to linear oscillations, a broad variety of possible phenomena, like existence of multiple solutions, super- (and sub-) harmonics in case of harmonic excitation, period multiplication or chaos. While methods for identification and solution of the underlying equations of motion in linear cases still offer some challenges, the investigation of...

756. Large interacting particle systems in the social and data sciences

Marie-Therese Wolfram

11/04/2025, 11:00

Large interacting particle systems (LIPS) are not only an important modeling tool in the life and social sciences, but also the data sciences. In the former case, the particles may correspond to cells or pedestrians interacting with their respective environment and each other, while in the latter, these particles may explore high dimensional data landscapes in the context of global...

757. A multiscale perspective on electrical conductivity

Andreas Menzel

11/04/2025, 12:00

The importance of different length scales in materials science is well-recognised and subject of intense interdisciplinary research efforts. In these developments, multiscale modelling approaches take a key role as these enable the prediction of the effective material response based on detailed microstructure representations.

Motivated by the influence of microcracks and grain boundaries on...