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Multi-axle fatigue analyzing method and application thereof

A fatigue analysis and spindle technology, which is applied in the direction of applying repetitive force/pulsation force to test the strength of materials, etc., can solve problems such as the inability to effectively deal with cooperative rain flow cycle counting, and achieve the effect of reducing the amount of calculation and increasing the accuracy

Active Publication Date: 2012-10-03
SHANGHAI BOLANDA INFORMATION TECH
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Problems solved by technology

The proportional load and non-proportional load cannot be judged before the rainflow cycle counting, and the cooperative rainflow cycle counting between the two load variables cannot be effectively handled

Method used

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  • Multi-axle fatigue analyzing method and application thereof
  • Multi-axle fatigue analyzing method and application thereof
  • Multi-axle fatigue analyzing method and application thereof

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Embodiment Construction

[0027] In the following description, many technical details are proposed in order to enable readers to better understand the application. However, those skilled in the art can understand that without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.

[0028] In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe the implementation of the present invention in detail in conjunction with the accompanying drawings.

[0029] The first embodiment of the present invention relates to a multiaxial fatigue analysis method. figure 1 is a flow diagram of the multiaxial fatigue analysis method. The multiaxial fatigue analysis method includes the following steps:

[0030] Read the pre-acquired N sets of load data sets, where N is a positive integer greater than 1, and...

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Abstract

The invention relates to the field of a fatigue strength property test of solid materials and discloses a multi-axle fatigue analyzing method and a system thereof. A main shaft direction and a load of a main shaft are more effectively and reasonably determined so as to rapidly carry out a multi-axle fatigue service life calculation process. According to the invention, the multi-axle fatigue analyzing method comprises the following steps of: reading N groups of load data groups which are pre-obtained; carrying out relevancy analysis on the N groups of load data groups; if an analyzing result is more than a pre-set threshold, carrying out equivalent single-axle load data treatment on the N groups of load data groups and carrying out fatigue analysis on the processing result according to single-axle fatigue service life calculation or a security coefficient algorithm so as to obtain damages or service life; and if the analyzing result is not more than the pre-set threshold, carrying out multi-axle rain flow counting treatment on the N groups of the load data groups; and obtaining the damages or the service life according to a multi-axle service life algorithm or the security coefficient algorithm.

Description

technical field [0001] The invention relates to the field of fatigue strength characteristic testing of solid materials, in particular to a multiaxial fatigue analysis technology. Background technique [0002] Multiaxial (including biaxial, hereinafter collectively referred to as multiaxial) fatigue refers to fatigue under the action of multiaxial stress or strain, also known as compound fatigue. Multiaxial fatigue damage occurs under multiaxial cyclic loading conditions, during which two or three stress (or strain) components independently change periodically with time. The changes of these stress (strain) components can be in-phase and proportional, or not in-phase and non-proportional. Usually, the problem of multiaxial fatigue is equivalent to the problem of uniaxial fatigue, and the calculation result is conservative. At the same time, the method equivalent to uniaxial does not take into account the directionality of the crack in fatigue failure. The processing method...

Claims

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Application Information

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IPC IPC(8): G01N3/32
Inventor 焦晓娟张湝渭
Owner SHANGHAI BOLANDA INFORMATION TECH
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