Efficient generation of geodesic random fields in finite elements with application to shell buckling

Autor: Sander van den Broek, Eelco Jansen, Raimund Rolfes

Publikováno v: Thin-Walled Structures 179 (2022)

Structures contain inherent deviations from idealized geometry and material properties. Quantifying the effects of such random variations is of interest when determining the reliability and robustness of a structure. Generating fields that follow co

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::986fbd7821281e85844a123d1cecb35a
https://www.repo.uni-hannover.de/handle/123456789/13662

Displacement-based multi-modal formulation of Koiters method applied to cylindrical shells

Autor: Saullo G. P. Castro, Eelco Jansen

The multi-modal formulation of Koiter's asymptotic method provides a systematic and efficient procedure to evaluate the initial post-buckling behaviour and to assess the nonlinear behavior of structures. This manuscript presents a displacement-based

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::935a940c5f85a491087288e1de5bb909
https://engrxiv.org/92xvf

Design optimization of multistable variable-stiffness laminates

Autor: Ayan Haldar, Eelco Jansen, P. M. Anilkumar, B. N. Rao, Raimund Rolfes

Publikováno v: Mechanics of Advanced Materials and Structures. 26:48-55

Exploiting the anisotropic nature of composite laminates is a driving factor to improve the design regime of multistable structures. The concept of laminate tailoring is being taken a step ahead by allowing variation in fiber angle orientation within

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::465bd298868ae165ec6147b0bd8c1e61
https://doi.org/10.1080/15376494.2018.1512022

An efficient semi-analytical framework to tailor snap-through loads in bistable variable stiffness laminates

Autor: Eelco Jansen, Paul M. Weaver, Raimund Rolfes, Rainer Groh, Ayan Haldar

Publikováno v: Haldar, A, Groh, R, Jansen, E, Weaver, P M & Rolfes, R 2020, ' An efficient semi-analytical framework to tailor snap-through loads in bistable variable stiffness laminates ', International Journal of Solids and Structures . https://doi.org/10.1016/j.ijsolstr.2020.02.018

Multistable laminates are potential candidates for adaptive structures due to the existence of multiple stable states. Commonly, such bistable shapes are generated from the cool-down process of the unsymmetric laminates from the curing temperature. I

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8c3bfa8a8b56e3577f9f25e9e4525f89
https://publica.fraunhofer.de/handle/publica/267100

Fracture Probability, Crack Patterns, and Crack Widths of Multicrystalline Silicon Solar Cells in PV Modules During Mechanical Loading

Autor: Raimund Rolfes, Felix Haase, Marc Köntges, Seyed Roozbeh Nabavi, Eelco Jansen, Jörg Käsewieter

Publikováno v: IEEE Journal of Photovoltaics. 8:1510-1524

We experimentally analyze the position and opening behavior of cracks in multicrystalline silicon solar cells laminated in standard-sized frameless modules during mechanical loading in a 4-line-bending setup. The results of the experiment are reprodu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1a81eeb74e5151d4ee7d0e0d3f14115d
https://doi.org/10.1109/jphotov.2018.2871338