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Abstract

This study focused on the damage of permanent magnets(NdFeB) in the electromagnetic buffer under the intensive impact load. According to the constitutive characteristics of the permanent magnets, a constitutive model suitable for NdFeB called damage-modified ZWT was determined. Furthermore, the specific parameters in the constitutive model were determined by fitting the constitutive curve. Then the incremental expression was established for the constitutive model and the model was embedded into ABAQUS via the VUMAT subroutine interface. A dynamic model of the electromagnetic buffer was established and calculated. After that the evolution and distribution law of damage in permanent magnets under the intensive impact load were clarified by analyzing the finite element results. Finally the damage of the device is reduced by optimizing the geometric parameters. The results show that the permanent magnets near the inner ring are damaged more from the radial distribution of the damage and the permanent magnets on both sides are damaged more from the lateral distribution of the damage, which provides a reference for the design of electromagnetic buffers.

Keywords

Intensive impact load the damage in permanent magnets damage-modified ZWT constitutive model VUMAT subroutine

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References

Kou

B.Q.

Jin

Y.X.

Zhang

and Zhang

H.L.

, Development and application prospects of the electromagnetic damper, Proceedings of the CSEE 35(12) (2015), 3132–3143.

Ebrahimi

Khamesee

M.B.

and Golnaraghi

, A novel eddy current damper: Theory and experiment, Journal of Physics D-Applied Physics 42(7) (2009), 6.

Canova

and Vusini

, Analytical modeling of rotating eddy-current couplers, IEEE Transactions on Magnetics 41(1) (2005), 24–35.

Chen

Z.Q.

Tian

J.Y.

Huang

Z.W.

and Wang

J.H.

, Calculation and test correction method of plane type eddy current damping coefficient, China Journal of Highway and Transport 29(10) (2016), 46–53.

L.Z.

Liu

Y.P.

and Li

D.S.

, Optimization design and test of dual air-gaps and liquid-cooled eddy current retarder, International Journal of Applied Electromagnetics and Mechanics 61(2) (2019), 157–170.

A.H.

Dong

S.Z.

and Li

, Mechanical properties of RE permanent magnetic materials, Metallic Functional Materials (04) (2002), 7–10.

Wang

H.R.

Wan

Chen

D.N.

Lei

G.H.

and Ren

C.Y.

, Dynamic fracture of sintered Nd-Fe-B magnet under uniaxial compression, Journal of Magnetism and Magnetic Materials 456 (2018), 358–367.

Tao

Ahmad

Zhang

P.Y.

Zheng

X.M.

and Zhang

S.Y.

, Structural, magnetic and mechanical properties of Nd6.8Fe63.3Nb4.0Co1.3Cr1.1Zr0.9B22.6 nanocrystalline hard magnet, Aip Advances 8(7) (2018), 8.

Rojek

Nosewicz

and Chmielewski

, Micro-macro relationships from discrete element simulations of sintering, International Journal for Multiscale Computational Engineering 15(4) (2017), 323–342.

10.

Song

Chen

J.K.

Qian

Y.F.

and Cao

Y.H.

, Rate-dependent characteristic of relaxation time of concrete, Acta Mechanica Solida Sinica 32(1) (2019), 69–80.

11.

L.L.Wang

X.L.Dong

and Sun

Z.J.

, Dynamic constitutive behavior of materials at high strain rate taking account of damage evolution, Explosion and Shock Waves (03) (2006), 193–198.

12.

Zhang

X.Q.

Y.X.

Ning

J.G.

Zhao

L.M.

and Yang

G.T.

, A study on the strain-rate dependent dynamic constitutive equation of Al2O3 ceramics, Explosion and Shock Waves (03) (2004), 226–232.

13.

Ahmed

Wang

and Zhang

, High-speed bird impact analysis of aircraft windshield by using a nonlinear viscoelastic model, Applied Mechanics and Materials 290 (2013), 85–90.

14.

Chang

B.N.

Wang

X.Y.

Long

Z.Q.

J.F.

Ruan

S.L.

and Shen

C.Y.

, Constitutive modeling for the accurate characterization of the tension behavior of PEEK under small strain, Polymer Testing 69 (2018), 514–521.

15.

Wang

Y.J.

and Zhang

W.H.

, Finite element simulation of PMMA aircraft windshield against bird strike by using a rate and temperature dependent nonlinear viscoelastic constitutive model, Composite Structures 108 (2014), 21–30.

16.

Lei

G.H.

Wan

and Wang

H.R.

, Study on fracture behavior of sintered Nd-Fe-B magnet under dynamic compression, Chinese Rare Earths 39(06) (2018), 63–68.

17.

Lili

Xinlong

Dong

and Zijian

, Dynamic constitutive behavior of materials at high strain rate taking account of damage evolution, Explos Shock Waves (03) (2006), 193–198.

18.

Liu

W.S.

Z.P.

and Qing

G.H.

, A progressive damage model introducing temperature field for bolted composite joint with preload, Modelling and Simulation in Materials Science and Engineering 27(6) (2019), 19.

19.

Zheng

and Qingying

, Development of a practical uniaxial cyclic constitutive model for concrete, IOP Conference Series: Earth and Environmental Science 295 (2019), 042057 (10 pp.).

20.

Alexandrino

P.D.L.

Gomes

G.F.

and Cunha

S.S.

, A robust optimization for damage detection using multiobjective genetic algorithm, neural network and fuzzy decision making, Inverse Problems in Science and Engineering 28(1) (2020), 21–46.

21.

Y.H.

Chen

Bai

J.T.

and Zuo

W.J.

, Shape optimization of thin-walled cross section for automobile body considering stamping cost, manufacturability and structural stiffness, International Journal of Automotive Technology 21(2) (2020), 503–512.

Damage of permanent magnets in the electromagnetic buffer under intensive impact load

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