CN112131772B - Simulation method of non-magnetic conductive layer applied to static characteristic simulation of magnetic latching relay - Google Patents
Simulation method of non-magnetic conductive layer applied to static characteristic simulation of magnetic latching relay Download PDFInfo
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- CN112131772B CN112131772B CN202011050763.9A CN202011050763A CN112131772B CN 112131772 B CN112131772 B CN 112131772B CN 202011050763 A CN202011050763 A CN 202011050763A CN 112131772 B CN112131772 B CN 112131772B
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Abstract
The invention discloses a simulation method of a non-magnetic conductive layer applied to static characteristic simulation of a magnetic latching relay, which comprises the following steps: s1: establishing a magnetic latching relay CAD model containing a permanent magnet; s2: measuring a non-magnetic conductive coating in the working flux path; s3: introducing a CAD model into finite element software, modifying the sizes of the permanent magnet and the yoke iron, and removing the thickness of the plating layer on the outer surface; s4: establishing non-magnetic-conduction coating body clinging to surface of permanent magnetV dSetting the volume property as air; s5: setting material properties of other parts of the CAD model except the non-magnetic conductive coating body according to actual part materials, and setting simulation types and parameters; s6: selecting unit types, establishing a finite element model in a network, calculating the model, and extracting a simulation result. Compared with the traditional simulation method, the static characteristic simulation result is more accurate and has higher consistency with the characteristics of the actual product.
Description
Technical Field
The invention relates to an equivalent simulation analysis method applied to a non-magnetic conductive coating in a magnetic latching relay static characteristic simulation magnetic flux path.
Background
At present, the magnetic latching relay is an automatic switching element with an isolation function, and has wide application in the fields of aerospace, industrial automation and the like. In order to ensure long-term and reliable operation of the magnetic latching relay, the research on the influence of a permanent magnet coating in the magnetic latching relay on the performance of a product is very important. In order to improve the reliability of the magnetic latching relay, it is necessary to fully recognize the influence of the non-magnetic conductive coating in the magnetic circuit on the performance of the product in the design process. At present, the non-magnetic-conductive coating on the surfaces of parts such as a permanent magnet, a yoke, an armature and an iron core in a magnetic flux path has a great influence on a finite element simulation calculation result of static characteristics of a product, and the influence of the permanent magnet coating in a magnetic latching relay on the product performance is mainly verified by the following method: when a real object is modeled in simulation, the influence of a plating layer is not considered on parts such as a permanent magnet, a yoke, an armature, an iron core and the like involved in a magnetic circuit, namely the material property of the plating layer is set to be consistent with the material property of a plated object, and the thickness of the plating layer at part of a magnetic flux path influences the circulation of the magnetic flux, so that the generated magnetic flux leakage cannot be reflected in simulation calculation, and therefore, the real static characteristic of the magnetic latching relay cannot be simulated accurately in the conventional method.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a simulation method of a non-magnetic conductive layer applied to static characteristic simulation of a magnetic latching relay. The method aims at performing simulation verification by replacing a non-magnetic conductive coating in a magnetic flux path with an air layer, can calculate the characteristics of a target product more accurately, and has more accurate static characteristic simulation result and higher characteristic consistency with an actual product compared with the traditional simulation method.
The purpose of the invention is realized by the following technical scheme:
a simulation method of a non-magnetic conductive layer applied to static characteristic simulation of a magnetic latching relay comprises the following steps:
step S1: in three-dimensional modeling software, a CAD model which is completely consistent with an actual product is established for a magnetic latching relay containing a permanent magnet;
step S2: measuring the thickness of the non-magnetic-conductive coating in the working magnetic flux path, namely the thickness of the non-magnetic-conductive coating of the permanent magnet and the non-magnetic-conductive coating of the adjacent yoke iron;
step S3: importing the CAD model established in the step S1 into finite element software, modifying the sizes of parts such as the permanent magnet, the yoke iron and the like, and removing the thickness of the plating layer on the outer surface;
step S4: clinging to the surface of the permanent magnetSurface-establishing a non-magnetic-conductive plated layer body having a thickness equal to the sum of the thicknesses of the non-magnetic-conductive plated layer of the permanent magnet and the non-magnetic-conductive plated layer of the adjacent yoke in step S2V dSetting the volume property as air;
step S5: setting material properties of other parts of the CAD model except the non-magnetic conductive coating body according to actual part materials, and setting simulation types and parameters for simulation;
step S6: selecting unit types, establishing a finite element model in a network, calculating the model, and extracting a simulation result.
Compared with the prior art, the invention has the following advantages:
the invention provides a simulation method of a non-magnetic-conductive coating on a magnetic flux path in the static characteristic simulation of a magnetic latching relay, which can obtain a static characteristic simulation result closer to the actual performance of the magnetic latching relay and can measure the influence of the thickness of the non-magnetic-conductive coating on the static performance of the magnetic latching relay to a certain extent.
Drawings
Fig. 1 is a simulation flowchart.
Detailed Description
The technical solution of the present invention is further described below with reference to the accompanying drawings, but not limited thereto, and any modification or equivalent replacement of the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention shall be covered by the protection scope of the present invention.
The invention provides a simulation method of a non-magnetic conduction layer applied to static characteristic simulation of a magnetic latching relay, wherein a magnetizer related to a plating layer comprises an armature, a yoke, an iron core and a permanent magnet, and analysis and explanation are carried out only by replacing the non-magnetic conduction plating layer of the permanent magnet and the yoke part with an air layer in the specific implementation step. As shown in fig. 1, the method comprises the steps of:
step S1: in three-dimensional modeling software, a CAD model which is completely consistent with an actual product is established for the magnetic latching relay containing the permanent magnet.
Step S2: non-magnetic conductive coatings in the working flux path are measured (the method is explained with non-magnetic conductive coatings near the permanent magnets).
In this step, the thickness of the non-magnetic conductive coating of the permanent magnet, yoke and other parts in the magnetic flux path is measured, and the non-magnetic conductive coating body is established based on the effect of the non-magnetic conductive coating on the simulated coatingV d。
In this step, a professional plating thickness measuring instrument is used when the plating thickness of the permanent magnet and yoke parts is measured.
Step S3: the CAD model created in step S1 is introduced into the finite element software, and the dimensions of the permanent magnet, the yoke, and the like are modified to remove the thickness of the outer surface plating.
In this step, according to the thickness of the non-magnetic conductive coating of the permanent magnet, the yoke and other parts in the magnetic flux path measured in step S2, the volume of the original permanent magnet, the yoke and other parts with the non-magnetic conductive coating is subtracted by the volume of the corresponding coating thickness, and the remaining parts are the permanent magnet and the yoke parts in the finite element simulation of the static characteristic.
In the step, the non-magnetic-conductive coating layers of the permanent magnet and the yoke are combined into a building body in finite element software, and the non-magnetic-conductive coating layer body, the permanent magnet and the yoke are distinguished according to the building body.
Step S4: a non-magnetic conductive coating body with the thickness equal to the sum of the thickness of the non-magnetic conductive coating of the permanent magnet and the non-magnetic conductive coating of the adjacent yoke in the step S2 is established closely to the surface of the permanent magnetV dSetting the non-magnetic-conduction coating body property as air.
In this step, an air layer is used to replace the plating properties.
Step S5: setting material properties of other parts of the CAD model except the non-magnetic conductive coating body according to actual part materials, and setting simulation types and parameters for simulation;
step S6: selecting unit types, establishing a finite element model in a network, calculating the model, and extracting a simulation result, wherein the simulation result obtained by using the method is closer to the actual performance of a product compared with the traditional method.
Claims (4)
1. A simulation method of a non-magnetic conductive layer applied to static characteristic simulation of a magnetic latching relay is characterized by comprising the following steps:
step S1: in three-dimensional modeling software, a CAD model which is completely consistent with an actual product is established for a magnetic latching relay containing a permanent magnet;
step S2: measuring the thickness of the non-magnetic-conductive coating in the working magnetic flux path, namely the thickness of the non-magnetic-conductive coating of the permanent magnet and the non-magnetic-conductive coating of the adjacent yoke iron;
step S3: importing the CAD model established in the step S1 into finite element software, modifying the sizes of the permanent magnet and the yoke part, and removing the thickness of the plating layer on the outer surface;
step S4: a non-magnetic conductive coating body with the thickness equal to the sum of the thickness of the non-magnetic conductive coating of the permanent magnet and the non-magnetic conductive coating of the adjacent yoke in the step S2 is established closely to the surface of the permanent magnetV d；
Step S5: setting material properties of other parts of the CAD model except the non-magnetic conductive coating body according to actual part materials, and setting simulation types and parameters for simulation;
step S6: selecting unit types, establishing a finite element model in a network, calculating the model, and extracting a simulation result.
2. The simulation method of the non-magnetic conductive layer used in the static characteristic simulation of the magnetic latching relay according to claim 1, wherein in the step S2, a professional plating thickness measuring instrument is used when measuring the plating thickness of the permanent magnet and the yoke part.
3. The simulation method of non-magnetic conductive layer for use in static characteristic simulation of magnetic latching relay according to claim 1, wherein in step S3, the non-magnetic conductive coating layers of the permanent magnet and the yoke are combined into a building body in the finite element software, so as to distinguish the non-magnetic conductive coating layer from the permanent magnet and the yoke.
4. The simulation method of the non-magnetic conductive layer applied to the static characteristic simulation of the magnetic latching relay according to claim 1, wherein in the step S4, the non-magnetic conductive layer is set to be air.
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