Application of macro-element and finite element coupling for the behavior analysis of magnetoforming systems

Azzouz, Fadoua Ben; Bendjima, B.; Féliachi, Mouloud; Latreche, Mohamed E. H.

doi:10.1109/20.767392

Cited by 16 publications

(6 citation statements)

References 3 publications

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“…Rather, the effects of velocity are treated by a special technique that consists in creating a geometric band subdivided into sub-regions designating the tube as a part of air, to which appropriate physical properties are assigned at each displacement step. A macro-element of time-dependent width has been used to model the expanding gap between the coil and tube (Mohellebi et al, 1998;Azzouz et al., 1999). The simulation of deforming process is obtained by the modification of the macro-element size through the modification of its matrix while retaining the same mesh topology.…”

Section: Introductionmentioning

confidence: 99%

Sequential coupling simulation for electromagnetic–mechanical tube compression by finite element analysis

Yuan

Jiang-hua

2009

Journal of Materials Processing Technology

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Section: Introductionmentioning

confidence: 99%

Sequential coupling simulation for electromagnetic–mechanical tube compression by finite element analysis

Yuan

Jiang-hua

2009

Journal of Materials Processing Technology

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“…This equation is coupled with the magnetic field equation through the magnetic force which is computed by Maxwell stress tensor method and the modified flux distribution due to the moving part displacement. The high accuracy required for taking into account the moving parts in the linear stepping motors has led us to adopt the Macro-Element (ME) technique [11,12] compared to the movement techniques used in [2,3,[13][14][15][16]] to simulate the movement in linear devices. The ME technique is based on the analytical solution of Laplace equation in the unmeshed air-gap region which separates the meshed fixed and mobile regions.…”

Section: Introductionmentioning

confidence: 99%

“…are the numbers of the meshed region nodes and Macro-Elements boundary nodes respectively. The contribution of the Macro-Element to the global stiffness matrix is considered by the term of the matrix ME ij M and is given by [11,12] as:…”

mentioning

confidence: 99%

Numerical Modeling of the Coupled Electromagnetic and Mechanical Phenomena of Linear Stepping Motors

Zaouia¹,

Benamrouche²,

Rachek³

2012

JEMAA

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In this paper, we propose an electromagnetic-mechanical model based on the finite element and Macro-Element (ME) technique to analyse and study the dynamic characteristics of a Tubular Linear Switched Reluctance Stepping Motor (LSRSM). After the resolution of the non-linear electromagnetic equation governing the behaviour of the different materials of the motor using the nodal-based finite element method, this equation is then coupled to the mechanical equation firstly through the magnetic force computed by Maxwell stress tensor, and secondly by the modified flux distribution due to the moving part. Because of the precision required in the mobile part displacement and the very small air gap of stepping motors, the simulation of the movement is assured by the Macro-Element (ME) technique compared to other movement techniques that present many disadvantages. The validity of the developed model is verified through the comparison of the computed displacement of the LSRSM moving part with those given experimentally [2]. The Results shows satisfactory agreement. The obtained dynamic characteristics, particularly the starting magnetic force, are obtained by considering two values of the supplying currents

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“…They reduced the analysis time by differentiating the size of mesh of the coil part and forming material part, and expanding the mesh size of the unnecessary parts to be analyzed. In addition, they improved accuracy by controlling the size of mesh of the parts that are required to be accurate [2]. In 2005, Yu et al conducted an analysis using circular tubes and the ANSYS commercial analysis program.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Forming Process Analysis Based on Coupled Simulations of Electromagnetic Analysis and Structural Analysis

Lee¹,

Lee²,

Kim³

et al. 2016

Journal of Magnetics

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We conducted a phased electromagnetic forming process analysis (EFPA) over time through a coupling of electromagnetic analysis and structural analysis. The analysis is conducted through a direct linkage between electromagnetic analysis and structural analysis. The analysis process is repeated until the electric current is completely discharged by a formed coil. We calculate the forming force that affects the workpiece using MAXWELL, a commercial electromagnetic finite element analysis program. Then, we simulate plastic behavior by using the calculated forming force data as the forming force input to ANSYS, a commercial structure finite element analysis program. We calculate the forming force data by using the model shape in MAXWELL, a commercial electromagnetic finite element analysis program. We repeat the process until the current is fully discharged by the formed coil. Our results can be used to reduce the error in data transformation with a reduced number of data transformations, because the proposed approach directly links the electromagnetic analysis and the structural analysis after removing the step of the numerical analysis of a graph describing the forming force, unlike the existing electromagnetic forming process. Second, it is possible to simulate a more realistic forming force by keeping a certain distance between nodes using the re-mesh function during the repeated analysis until the current is completely discharged by the formed coil, based on the MAXWELL results. We compare and review the results of the EFPA using the peak value of the forming force that acts on the workpiece (which is the existing analysis method), and the proposed phased EFPA over time approach.

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Application of macro-element and finite element coupling for the behavior analysis of magnetoforming systems

Cited by 16 publications

References 3 publications

Sequential coupling simulation for electromagnetic–mechanical tube compression by finite element analysis

Sequential coupling simulation for electromagnetic–mechanical tube compression by finite element analysis

Numerical Modeling of the Coupled Electromagnetic and Mechanical Phenomena of Linear Stepping Motors

Electromagnetic Forming Process Analysis Based on Coupled Simulations of Electromagnetic Analysis and Structural Analysis

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