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Publications (6 of 6) Show all publications
Du-Bar, C., Mann, A., Wallmark, O. & Werke, M. (2018). Comparison of Performance and Manufacturing Aspects of an Insert Winding and a Hairpin Winding for an Automotive Machine Application. In: 2018 8th International Electric Drives Production Conference, EDPC 2018 - Proceedings: . Paper presented at 8th International Electric Drives Production Conference, EDPC 2018, 4 December 2018 through 5 December 2018. Institute of Electrical and Electronics Engineers Inc.
Open this publication in new window or tab >>Comparison of Performance and Manufacturing Aspects of an Insert Winding and a Hairpin Winding for an Automotive Machine Application
2018 (English)In: 2018 8th International Electric Drives Production Conference, EDPC 2018 - Proceedings, Institute of Electrical and Electronics Engineers Inc. , 2018Conference paper, Published paper (Refereed)
Abstract [en]

In this paper, two stators with different winding concepts but with the same rotor of an interior permanent magnet synchronous machine (IPMSM) type are presented. Both concepts are investigated based on their performance and their respectively stator cost and stator manufacturing aspects for a yearly production rate of 1 million units.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers Inc., 2018
Keywords
Automotive, Costs, Eddy current, Flat wire, Hairpin winding, Mass production, Production planning, Proximity effect, Skin effect, Eddy currents, Electric drives, Manufacture, Permanent magnets, Production control, Rotors (windings), Stators, Winding, Hairpin windings, Proximity effects, Electric windings
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-38538 (URN)10.1109/EDPC.2018.8658331 (DOI)2-s2.0-85063505311 (Scopus ID)9781728101477 (ISBN)
Conference
8th International Electric Drives Production Conference, EDPC 2018, 4 December 2018 through 5 December 2018
Note

Funding text 1: ACKNOWLEDGEMENT The authors would like to thank the Swedish Energy Agency for financial support.

Available from: 2019-05-10 Created: 2019-05-10 Last updated: 2019-06-18Bibliographically approved
Werke, M., Wretland, A., Ottosson, P., Holmberg, J., Machens, M. & Semere, D. (2018). Geometric distortion analysis using a combination of the contour method and machining simulation. In: Procedia CIRP: . Paper presented at 51st CIRP Conference on Manufacturing Systems, CIRP CMS 2018, 16 May 2018 through 18 May 2018 (pp. 1481-1486).
Open this publication in new window or tab >>Geometric distortion analysis using a combination of the contour method and machining simulation
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2018 (English)In: Procedia CIRP, 2018, p. 1481-1486Conference paper, Published paper (Refereed)
Abstract [en]

During machining the material removal releases residual stresses introduced by previous process steps. This causes geometric machining distortions and thereby high rejection rates and costs. By simulating the process chain it is possible to predict this type of distortions. However, this requires advanced material models and accurate process- and material data for the individual processes. In order to simplify the modelling efforts a methodology that combines the contour method with machining simulation is proposed. The methodology is validated for an aerospace component using deep layer removal X-ray diffraction and CMM measurements. The methodology will improve possibilities to reduce machining distortions. © 2018 The Authors.

Keywords
Contour method, Finite Element Analysis, GOM measurements, Machining distortions, Modelling methodology, residual stresses, XRD measurements, Coordinate measuring machines, Finite element method, Advanced materials, Aerospace components, Geometric distortion, Machining distortion, Machining simulation, Manufacture
National Category
Other Natural Sciences
Identifiers
urn:nbn:se:ri:diva-34545 (URN)10.1016/j.procir.2018.03.213 (DOI)2-s2.0-85049577513 (Scopus ID)
Conference
51st CIRP Conference on Manufacturing Systems, CIRP CMS 2018, 16 May 2018 through 18 May 2018
Available from: 2018-08-09 Created: 2018-08-09 Last updated: 2020-01-30Bibliographically approved
Werke, M., Bagge, M., Nicolescu, M. & Lindberg, B. (2015). Process modelling using upstream analysis of manufacturing sequences (ed.). The International Journal of Advanced Manufacturing Technology, 81(9-12), 1999-2006
Open this publication in new window or tab >>Process modelling using upstream analysis of manufacturing sequences
2015 (English)In: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 81, no 9-12, p. 1999-2006Article in journal (Refereed) Published
Abstract [en]

The manufacturing of components requires several manufacturing process steps that are performed in a sequence, during which the raw material is progressively converted into finished parts. The aim with simulation of manufacturing sequences is to replicate the aggregate effects of the process steps on key features of the finished product and manufacturing features. With the support of a successful simulation methodology, it will thereby be possible for process planners to evaluate virtually and select process steps to be included in the manufacturing sequence and to optimize process parameters. The motivation to implement sequential simulation in industry is therefore strong and will reduce time and cost in process planning. The modelling and simulation of complete manufacturing sequences is, however, a challenge which may lead to unrealistic and time-consuming modelling efforts and extensive computational requirements. This is due to the often complex material transformations through several consecutive process steps. In order to adapt sequential simulation into an industrial environment, simplifications are therefore necessary. This paper proposes a method for simplified metamodelling of manufacturing sequences, using upstream selection of process steps and definition of interconnected models. The method is presented as an algorithm and will improve the efficiency in the modelling of manufacturing sequences. The usability of the algorithm is demonstrated with two industrial cases: a bevel gear pinion and a steering arm.

Place, publisher, year, edition, pages
Springer-Verlag London Ltd, 2015
Keywords
Breadth first search, Finite element method, Manufacturing sequence, Metamodel builder, Process modelling, Process planning, Process simulation
National Category
Materials Engineering
Identifiers
urn:nbn:se:ri:diva-13295 (URN)10.1007/s00170-015-7076-4 (DOI)2-s2.0-84930342285 (Scopus ID)
Available from: 2016-09-22 Created: 2016-09-22 Last updated: 2019-07-08Bibliographically approved
Werke, M., Hedlind, M. & Nicolescu, M. (2014). Geometric Distortion Analysis Using CAD/CAM Based Manufacturing Simulation. In: Proceedings of the 6th International Swedish Production Symposium: . Paper presented at SPS14, Gothenburg, September 16-18.. Chalmers university
Open this publication in new window or tab >>Geometric Distortion Analysis Using CAD/CAM Based Manufacturing Simulation
2014 (English)In: Proceedings of the 6th International Swedish Production Symposium, Chalmers university , 2014Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

Machining of components may cause geometric distortions and thereby quality issues and increased costs. This paper presents an engineering approach of CAD/CAM based manufacturing simulation in order to be in control of geometric distortions after machining. The method utilises STEP AP209 for communication of CAD/CAM simulation data. The method improves the ability to optimise process parameters, geometry, and material, in order to fulfil the design requirements. The method supports concurrent design and process planning using 3D models in CAD/CAM and FEM.

Place, publisher, year, edition, pages
Chalmers university, 2014
Keywords
Process planning, manufacturing simulation, fixture design, CAD/CAM, FEM
National Category
Materials Engineering
Identifiers
urn:nbn:se:ri:diva-31301 (URN)
Conference
SPS14, Gothenburg, September 16-18.
Available from: 2017-09-26 Created: 2017-09-26 Last updated: 2019-06-18Bibliographically approved
Wärmefjord, K., Söderberg, R., Ottosson, P., Werke, M., Lorin, S., Lindkvist, L. & Wandebäck, F. (2013). Prediction of geometrical variation of forged and stamped parts for assembly variation simulation.. In: : . Paper presented at International Deep Drawing Research Group Conference 2013, IDDRG2013, Zurich, Switzerland, June 2-5..
Open this publication in new window or tab >>Prediction of geometrical variation of forged and stamped parts for assembly variation simulation.
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2013 (English)Conference paper, Oral presentation with published abstract (Other academic)
National Category
Materials Engineering
Identifiers
urn:nbn:se:ri:diva-31873 (URN)
Conference
International Deep Drawing Research Group Conference 2013, IDDRG2013, Zurich, Switzerland, June 2-5.
Available from: 2017-10-17 Created: 2017-10-17 Last updated: 2019-06-18Bibliographically approved
Werke, M., Kristoffersen, H., Haglund, S., Svensson, L. & Nord, A. (2008). Predicting residual stresses and hardness of a critical component using a combination of numerical and empirical methods (ed.). In: Steel Research International: . Paper presented at 12th International Conference on Metal Forming, METAL FORMING 2008 (pp. 812-819). Wiley-VCH Verlag, 79(2)
Open this publication in new window or tab >>Predicting residual stresses and hardness of a critical component using a combination of numerical and empirical methods
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2008 (English)In: Steel Research International, Wiley-VCH Verlag , 2008, Vol. 79, no 2, p. 812-819Conference paper, Published paper (Refereed)
Abstract [en]

This paper describes the experiences gained when using numerical and empirical methods in order to predict the accumulated surface characteristics for a safety component after several forging steps, controlled cooling and blasting. The forging steps were simulated in a sequence using one Finite Element (FE) code. The output forging mesh was used as input to the cooling simulation but was too coarse in order to reflect surface characteristics. The decarburisation effect during cooling that may influence the surface characteristics was not included in the cooling model. An attempt to create a parametric model of the blasting machine with output residual stresses and hardness as a function of input residual stresses, hardness and process parameters indicated the need of further investigation concerning the physical phenomena during blasting in the machine. A new method was developed for analysing the influence of the blasted surface texture on the stress intensity. The measured residual stresses and hardness span caused by variations in the blasting process were successfully used together with the stress intensity factor as input to a fatigue strength analysis. In order to establish a seamless chain of models through the manufacturing sequence further development concerning cooling and blasting models is required. © 2008 Verlag Stahleisen GmbH, Düsseldorf.

Place, publisher, year, edition, pages
Wiley-VCH Verlag, 2008
Series
Steel Research International, ISSN 1611-3683
Keywords
Fatigue properties, Manufacturing chain, Sequential simulation
National Category
Materials Engineering
Identifiers
urn:nbn:se:ri:diva-13440 (URN)2-s2.0-84886545897 (Scopus ID)
Conference
12th International Conference on Metal Forming, METAL FORMING 2008
Available from: 2016-09-22 Created: 2016-09-22 Last updated: 2019-06-18Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0001-8200-1370

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