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A storage degradation analysis method for mechanical properties of relays

An analysis method and relay technology, applied in the direction of instruments, design optimization/simulation, electrical digital data processing, etc., can solve the problems that the change of the mechanical performance of the relay cannot be given, and achieve the effect of saving test cost and reducing test difficulty

Active Publication Date: 2018-09-25
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the change of the mechanical performance of the relay during the long-term storage process cannot be given in the design stage of the relay. By combining the storage degradation modeling of the contact spring system with the vibration simulation of the relay, a method is proposed. The Method of Analyzing the Storage Degradation of Mechanical Properties of Relays in Early Stage

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  • A storage degradation analysis method for mechanical properties of relays
  • A storage degradation analysis method for mechanical properties of relays
  • A storage degradation analysis method for mechanical properties of relays

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specific Embodiment approach 1

[0021] Specific implementation mode one: the following combination figure 1 Describe this embodiment, this embodiment discloses a kind of method for determining the characteristic parameter of storage degradation of the contact spring system of an electromagnetic relay, which includes the following steps:

[0022] Step 1: Establish a vibration simulation model of the relay contact spring system according to the design parameters of the relay;

[0023] Step 2: Conduct a storage degradation test on the contact spring system, and monitor the degree of stress relaxation at different moments during the test;

[0024] Step 3: Based on the test data obtained in Step 2, a storage degradation model of the contact spring system is established based on the stress relaxation theory;

[0025] Step 4: discretize the storage degradation model of the contact spring system obtained in step 3, and obtain the stress relaxation degree D(t) of the contact spring system corresponding to different ...

specific Embodiment approach 2

[0030] Specific implementation mode two: the following combination figure 1 This embodiment is described. This embodiment is a further description of the specific embodiment one. The relay design parameters in step one include the dimensions, tolerances, and material properties of the relay itself and its components;

[0031] The establishment of the vibration simulation model of the relay contact spring system according to the design parameters of the relay is realized by ANSYSWORKBENCH (a software name);

[0032] The stress relaxation degree of the contact spring system described in step 2 is the deformation amount of the elastic element;

[0033] The stress relaxation theory described in step three uses the Larson-Miller formula:

[0034]

[0035] In the formula, θ is the Larson-Miller parameter; T is the temperature in degrees Celsius; t is the storage time; C Usually taken as 20;

[0036] The discretization of the storage degradation model of the contact spring ...

specific Embodiment approach 3

[0041] Specific implementation mode three: the following combination figure 1 , figure 2 , image 3 This implementation mode is described, and this implementation mode is a further description of the specific implementation mode 1 and the second implementation mode. The application object of this embodiment is a certain type of electromagnetic relay.

[0042]Step 1: Establish a vibration simulation model of a certain type of relay contact spring system in ANSYS WORKBENCH according to the design parameters of the relay, such as figure 2 shown.

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Abstract

The invention discloses a relay endurance performance storage degradation analysis method and belongs to the technical field of relay product performance analysis. The method comprises the steps of building a contact spring system vibration simulation model of a relay according to design parameters of the relay; performing a storage degradation test on a contact spring system, and based on a stress relaxation theory, building a storage degradation model of the contact spring system; discretizing the storage degradation model, based on this, modifying the simulation model to realize storage degradation injection of the contact spring system, and performing calculation to obtain a degradation condition of a pre-pressure value between normally closed contacts; performing mode analysis and frequency response analysis on the contact spring system vibration simulation model realizing the degradation injection, and determining degradation conditions of a resonant frequency and a correspondingcontact force response value; and comparing pre-pressure values and contact force response values corresponding to different storage time, and judging whether the endurance performance of the relay meets a requirement or not, thereby realizing the storage degradation analysis of the endurance performance of the relay. According to the method, the problem of incapability of giving out a change condition of the endurance performance of the relay in a long storage process during a design stage can be solved.

Description

technical field [0001] The invention relates to a method for analyzing the mechanical performance of a relay, belonging to the technical field of performance analysis of relay products. Background technique [0002] With the continuous deepening of related research in the field of reliability, researchers have gradually realized that the storage reliability of products plays an important role in the entire life cycle. For single-use products used in fields such as aviation, aerospace, and weaponry, the combined effect of various environmental stresses during storage is the most important reason for their performance degradation and even failure. As an important index to measure the performance of electromagnetic relays, the mechanical resistance has received extensive attention in practical applications. In the long-term storage process, affected by the degradation of various components, the performance parameters of the relay will change to varying degrees. As one of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 叶雪荣陈昊郑博恺赵建立陈秋影翟国富
Owner HARBIN INST OF TECH
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