Stankiewicz, Gabriel, M. Sc.
Gabriel Stankiewicz, M. Sc.
-
Configurational Mechanics of Soft Materials: Revolutionising Geometrically Nonlinear Fracture
(Drittmittelfinanzierte Einzelförderung)
Laufzeit: 1. Januar 2023 - 31. Dezember 2027
Mittelgeber: Europäische Union (EU)SoftFrac will revolutionise geometrically nonlinear fracture mechanics of soft materials (in short soft fracture) by capitalising on configurational mechanics, an unconventional continuum formulation that I helped shaping over the past decades. Mastering soft fracture will result in disruptive progress in designing the failure resilience of soft devices, i.e. soft robotics, stretchable electronics and tissue engineering applications. Soft materials are challenging since they can display moduli as low as only a few kPa, thus allowing for extremely large deformations. Geometrically linear fracture mechanics is well established, nevertheless not applicable for soft fracture given the over-restrictive assumptions of infinitesimal deformations. The appropriate geometrically nonlinear, finite deformation counterpart is, however, still in its infancy. By combining innovative data-driven/data-adaptive constitutive modelling with novel configurational-force-driven fracture onset and crack propagation, I will overcome the fundamental obstacles to date preventing significant progress in soft fracture. I propose three interwoven research Threads jointly addressing challenging theoretical, computational and experimental problems in soft fracture. The theoretical Thread establishes a new constitutive modelling ansatz for soft in/elastic materials, and develops the transformational configurational fracture approach. The computational Thread provides the associated novel algorithmic setting and delivers high-fidelity discretisation schemes to numerically follow crack propagation driven by accurately determined configurational forces. The experimental Thread generates and analyses comprehensive experimental data of soft materials and their geometrically nonlinear fracture for properly calibrating and validating the theoretical and computational developments. Ultimately, SoftFrac, for the first time, opens up new horizons for holistically exploring the nascent field soft fracture.
2024
Towards advanced piezoelectric metamaterial design via combined topology and shape optimization
In: Structural and Multidisciplinary Optimization 67 (2024), Art.Nr.: 26
ISSN: 1615-147X
DOI: 10.1007/s00158-024-03742-w
, , , , :
2023
On the influence of free space in topology optimization of electro-active polymers
In: Structural and Multidisciplinary Optimization 66 (2023), Art.Nr.: 187
ISSN: 1615-147X
DOI: 10.1007/s00158-023-03634-5
, , :
2022
Sequential topology and shape optimization framework to design compliant mechanisms with boundary stress constraints
In: Structural and Multidisciplinary Optimization 65 (2022)
ISSN: 1615-147X
DOI: 10.1007/s00158-022-03271-4
, , :
Geometrically nonlinear design of compliant mechanisms: Topology and shape optimization with stress and curvature constraints
In: Computer Methods in Applied Mechanics and Engineering 397 (2022)
ISSN: 0045-7825
DOI: 10.1016/j.cma.2022.115161
, , :
2021
Coupled topology and shape optimization using an embedding domain discretization method
In: Structural and Multidisciplinary Optimization (2021)
ISSN: 1615-147X
DOI: 10.1007/s00158-021-03024-9
, , :