Beräkningsbaserad modellering av elektrokemisk aktuation av en klass av kolfiber-kompositer
Forskningsprojekt, 2021
– 2024
The project concerns the computational modeling of a class of carbon fiber composites, known as shape-morphing composites. The actuation performance of such (smart) materials is achieved by the interplay between electrochemistry and mechanics, in particular the ability of carbon fibers to (de)intercalate Li-ions repeatedly without significant degradation. However, one concern is the experiementally observed long actuation response, which must be better understood and manipulated. Due to the expected large deflections of a plate-shaped actuating structure, the finite deformation setting (material description) is chosen in conjunction with the appropriate "through-the-thickness" kinematics. The following major tasks are then identified: (i) Microscale modeling of the relevant electrochemical-mechanical interactions in the fibers and in the structural electrolyte, (ii) modeling of the structural response with "exact" plate kinematics and based on computational homogenization, (iii) facilitating a full-fledged FE$^2$ strategy by applying Numerical Model Reduction for efficient solution of the RVE-problems associated with the plate midplane, (iv) carrying out a parameter study with sensitivity assessment with the purpose to improve the actuation performance.
Deltagare
Kenneth Runesson (kontakt)
Chalmers, Industri- och materialvetenskap, Material- och beräkningsmekanik
Leif Asp
Chalmers, Industri- och materialvetenskap, Material- och beräkningsmekanik
Ralf Jänicke
Chalmers, Industri- och materialvetenskap, Material- och beräkningsmekanik
Finansiering
Vetenskapsrådet (VR)
Projekt-id: 2020-05057
Finansierar Chalmers deltagande under 2021–2024