Zobrazeno 1 - 10
of 97
pro vyhledávání: '"Stefan Kollmannsberger"'
Autor:
Raffaele De Biasi, Oguz Oztoprak, Filippo Zanini, Simone Carmignato, Stefan Kollmannsberger, Matteo Benedetti
Publikováno v:
Materials & Design, Vol 246, Iss , Pp 113321- (2024)
A well-known Achilles' heel of laser powder bed fusion (L-PBF) additive manufactured lattice structures is the difficulty in predicting fatigue properties. The presence of manufacturing-induced defects significantly affects the fatigue resistance of
Externí odkaz:
https://doaj.org/article/24380aa30d414611b66f871ac5b2a190
Publikováno v:
Advanced Modeling and Simulation in Engineering Sciences, Vol 7, Iss 1, Pp 1-33 (2020)
Abstract This paper proposes an extension of the finite cell method (FCM) to V-rep models, a novel geometric framework for volumetric representations. This combination of an embedded domain approach (FCM) and a new modeling framework (V-rep) forms th
Externí odkaz:
https://doaj.org/article/ce3664e6fd774141b0ba0f6c77766247
Autor:
David Briels, Stefan Kollmannsberger, Felicitas Leithner, Carla Matthäus, Ahmad Saleem Nouman, Oguz Oztoprak, Ernst Rank
Publikováno v:
Buildings, Vol 12, Iss 7, p 1023 (2022)
Combining the additive manufacturing (AM) process of extrusion with lightweight concrete, mono-material but multi-functional elements with an internal cellular structure can be created to achieve good thermal performance of a wall at low resource con
Externí odkaz:
https://doaj.org/article/045e7069577b4a03972354195bab7f30
Publikováno v:
Engineering with Computers. 38:4879-4893
The direct numerical simulation of metal additive manufacturing processes such as laser powder bed fusion is challenging due to the vast differences in spatial and temporal scales. Classical approaches based on locally refined finite elements combine
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b1e067d7614961d1df6f90c4ca15d0c
https://doi.org/10.1007/s00366-022-01719-1
https://doi.org/10.1007/s00366-022-01719-1
Publikováno v:
Journal of Mechanics. 38:60-76
The finite element method is classically based on nodal Lagrange basis functions defined on conforming meshes. In this context, total reaction forces are commonly computed from the so-called “nodal forces”, yielding higher accuracy and convergenc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc1f8a8a761509a6665c99d4628d744b
https://doi.org/10.1093/jom/ufac006
https://doi.org/10.1093/jom/ufac006
Full Waveform Inversion (FWI) is a successful and well-established inverse method for reconstructing material models from measured wave signals. In the field of seismic exploration, FWI has proven particularly successful in the reconstruction of smoo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::712efc99e9dcce80766409eada05ad9c
http://arxiv.org/abs/2209.07826
http://arxiv.org/abs/2209.07826
Publikováno v:
Computer Methods in Applied Mechanics and Engineering. 410:116029
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7754a4f2b366762d01cb3d11d53fcc96
https://doi.org/10.1016/j.cma.2023.116029
https://doi.org/10.1016/j.cma.2023.116029
Autor:
Ho Yeung, Alessandro Reali, Stefan Kollmannsberger, Ferdinando Auricchio, Massimo Carraturo, Brandon M. Lane
Publikováno v:
Integrating Materials and Manufacturing Innovation. 9:435-445
Process-dependent residual stresses are one of the main burdens to a widespread adoption of laser powder bed fusion technology in industry. Residual stresses are directly influenced by process parameters, such as laser path, laser power, and speed. I
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63c08156d923c5246d6ab72aaaf32c82
https://doi.org/10.1007/s40192-020-00191-3
https://doi.org/10.1007/s40192-020-00191-3
Publikováno v:
Web of Science
In this contribution, a novel framework for simulating mixed-mode failure in rock is presented. Based on a hybrid phase-field model for mixed-mode fracture, separate phase-field variables are introduced for tensile (mode I) and shear (mode II) fractu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4279953a35db89be7f2fbd9a34a16284
http://arxiv.org/abs/2201.05358
http://arxiv.org/abs/2201.05358
Publikováno v:
SSRN Electronic Journal.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aebade1557d73361d271a3bfe1887019
https://doi.org/10.2139/ssrn.4265496
https://doi.org/10.2139/ssrn.4265496