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Numerical prediction method and system for magnetomechanical behaviors of single crystal Ni-Mn-Ga alloy

A numerical prediction and magnetic mechanics technology, applied in CAD numerical modeling, electrical digital data processing, special data processing applications, etc., can solve the problems of cumbersome and complex finite element simulation, a large amount of storage and computing overhead, etc.

Pending Publication Date: 2020-09-29
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

Operating these units requires significant storage and computational overhead
In addition, along with the deformation of the sample (variant re-orientation), the mesh of the surrounding space needs to be adjusted, making the finite element simulation more cumbersome and complicated

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  • Numerical prediction method and system for magnetomechanical behaviors of single crystal Ni-Mn-Ga alloy
  • Numerical prediction method and system for magnetomechanical behaviors of single crystal Ni-Mn-Ga alloy
  • Numerical prediction method and system for magnetomechanical behaviors of single crystal Ni-Mn-Ga alloy

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Embodiment Construction

[0072] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0073] In the description of the present invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc. indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only In order to facilitate the description of the present invention and simplify the description, it does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific ...

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Abstract

The invention discloses a numerical prediction method and system for magnetomechanical behaviors of a single crystal Ni-Mn-Ga alloy. The method comprises the following steps: establishing a control equation set for describing the magnetomechanical behavior of a single crystal Ni-Mn-Ga sample, wherein the control equation set comprises a magnetic field equation, a stress balance equation, an internal variable development equation and a twin interface evolution criterion; designing a coupling finite element-boundary element numerical iteration method to solve the control equation set; and predicting the numerical value of the magnetomechanical behavior of the single crystal Ni-Mn-Ga alloy based on the solved control equation set. According to the method, a coupling finite element-boundary element numerical value method is adopted, nonlinear response of a sample area is simulated through a finite element method, distribution of magnetic flux on the surface of a sample is simulated througha boundary element method, the total number of units can be remarkably reduced, calculation efficiency is improved, and the method can be widely applied to the calculation simulation technology of novel intelligent metal material multi-field coupling mechanical behaviors.

Description

technical field [0001] The invention relates to the calculation and simulation technology of multi-field coupling mechanical behavior of novel intelligent metal materials, in particular to a numerical prediction method and system for the magnetic behavior of single crystal Ni-Mn-Ga alloy. Background technique [0002] Single crystal Ni-Mn-Ga alloy is a typical magnetic shape memory alloy. Under the action of external magnetic field or external force load, the strain of single crystal Ni-Mn-Ga alloy can reach 6%-10%. Under appropriate loading conditions, the strain occurring in the single crystal Ni-Mn-Ga alloy is also reversible, and the response frequency of the material can exceed 1kHz. Due to its unique material properties, single crystal Ni-Mn-Ga alloy has been widely regarded as an ideal material for manufacturing new-generation drivers and sensors, and has broad application prospects in machinery, medicine, aviation and other fields. [0003] In the past two decades,...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06F111/10G06F119/14G06F113/26
CPCG06F30/20G06F2111/10G06F2119/14G06F2113/26
Inventor 王炯黄庆洋
Owner SOUTH CHINA UNIV OF TECH
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