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Cao Zhitong
Cai Jiongjiong
Chen Hongping
He Guoguang
Institute of Applied Physics,
Zhejiang University,
Hangzhou 310027, China |
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FEM COUPLING FIELD ITERATION AND ITS
CONVERGENCE FOR A
GMM ACTURATOR
Abstract:
The coupling iteration (CI) of the finite element method(FEM) is used to simulate the magnetic and mechanical characteristics for a GMM actuator. The convergent ability under different prestress and different load types is investigated. Then the calculated deformations are compared with the experimental values. The results convince that the CI of FEM is suitable for the simulation of energy coupling and transformation mechanism of the GMM. At last, the output deformation properties are studied under different input currents, showing that there is a good compromise between good linearity and large strain under the prestress 6 MPa.
Key words:
Giant magnetostrictive materials(GMM) Energy coupling and transformation
Coupling iteration (CI) Finite element method (FEM) Actuator
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