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Ebermark, Sofia
Publications (3 of 3) Show all publications
Marjavaara, D., Ebermark, S. & Lundström, S. (2009). Compression moulding simulations of SMC using a multi-objective surrogate-based inverse modeling approach (ed.). Mechanics of composite materials, 45(5), 503-515
Open this publication in new window or tab >>Compression moulding simulations of SMC using a multi-objective surrogate-based inverse modeling approach
2009 (English)In: Mechanics of composite materials, ISSN 0191-5665, E-ISSN 1573-8922, Vol. 45, no 5, p. 503-515Article in journal (Refereed) Published
Abstract [en]

A multiobjective surrogate-based inverse modeling technique to predict the spatial and temporal pressure distribution numerically during the fabrication of sheet moulding compounds (SMCs) is introduced. Specifically, an isotropic temperature-dependent Newtonian viscosity model of a SMC charge is fitted to experimental measurements via numerical simulations in order to mimic the temporal pressure distribution at two spatial locations simultaneously. The simulations are performed by using the commercial computational fluid dynamics (CFD) code ANSYS CFX-10.0, and the multiobjective surrogate-based fitting procedure proposed is carried out with a hybrid formulation of the NSGA-IIa evolutionary algorithm and the response surface methodology in Matlab. The outcome of the analysis shows the ability of the optimization framework to efficiently reduce the total computational load of the problem. Furthermore, the viscosity model assumed seems to be able to re solve the temporal pressure distribution and the advancing flow front accurately, which can not be said of the spatial pressure distribution. Hence, it is recommended to improve the CFD model proposed in order to better capture the true behaviour of the mould flow.

National Category
Fluid Mechanics and Acoustics
Research subject
Fluid Mechanics
Identifiers
urn:nbn:se:ltu:diva-5852 (URN)10.1007/s11029-009-9109-2 (DOI)000272385000007 ()2-s2.0-75149120934 (Scopus ID)40a1e3f0-6bf3-11de-9f57-000ea68e967b (Local ID)40a1e3f0-6bf3-11de-9f57-000ea68e967b (Archive number)40a1e3f0-6bf3-11de-9f57-000ea68e967b (OAI)
Note

Validerad; 2009; 20090708 (stlu)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved
Marjavaara, D., Ebermark, S. & Lundström, S. (2008). Simulation of Compression moulding of SMC by using a multi-objective surrogate-based inverse modelling approach (ed.). In: (Ed.), (Ed.), Proceedings of the XV International Conference on Mechanics of Composites Material, MCM-2008: . Paper presented at International Conference on Mechanics of Composite Materials : 26/06/2008 - 30/06/2008.
Open this publication in new window or tab >>Simulation of Compression moulding of SMC by using a multi-objective surrogate-based inverse modelling approach
2008 (English)In: Proceedings of the XV International Conference on Mechanics of Composites Material, MCM-2008, 2008Conference paper, Meeting abstract (Other academic)
National Category
Fluid Mechanics and Acoustics
Research subject
Fluid Mechanics
Identifiers
urn:nbn:se:ltu:diva-40429 (URN)f91b6c70-cb27-11dd-9935-000ea68e967b (Local ID)f91b6c70-cb27-11dd-9935-000ea68e967b (Archive number)f91b6c70-cb27-11dd-9935-000ea68e967b (OAI)
Conference
International Conference on Mechanics of Composite Materials : 26/06/2008 - 30/06/2008
Note
Godkänd; 2008; 20081216 (stlu)Available from: 2016-10-03 Created: 2016-10-03 Last updated: 2017-11-25Bibliographically approved
Ebermark, S., Marjavaara, D. & Lundström, S. (2007). Pressning av SMC: numeriska tryckfältsberäkningar med hjälp av inversmodellering (ed.). In: (Ed.), Niklas Davidsson; Elianne Wassvik (Ed.), Svenska Mekanikdagar 2007: Program och abstracts. Paper presented at Svenska Mekanikdagar 2007 : 13/06/2007 - 15/06/2007 (pp. 74). Luleå: Luleå tekniska universitet
Open this publication in new window or tab >>Pressning av SMC: numeriska tryckfältsberäkningar med hjälp av inversmodellering
2007 (Swedish)In: Svenska Mekanikdagar 2007: Program och abstracts / [ed] Niklas Davidsson; Elianne Wassvik, Luleå: Luleå tekniska universitet, 2007, p. 74-Conference paper, Meeting abstract (Other academic)
Place, publisher, year, edition, pages
Luleå: Luleå tekniska universitet, 2007
Series
Research report / Luleå University of Technology, ISSN 1402-1528 ; 2007:10
National Category
Fluid Mechanics and Acoustics
Research subject
Fluid Mechanics
Identifiers
urn:nbn:se:ltu:diva-31084 (URN)5249c640-5bbf-11dc-a955-000ea68e967b (Local ID)5249c640-5bbf-11dc-a955-000ea68e967b (Archive number)5249c640-5bbf-11dc-a955-000ea68e967b (OAI)
Conference
Svenska Mekanikdagar 2007 : 13/06/2007 - 15/06/2007
Note
Godkänd; 2007; 20070905 (ysko)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved

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