Fatigue life prediction method of composite material, apparatus and electronic equipment thereof

A technology of fatigue life prediction and fatigue life, which is applied in the direction of measuring devices, analysis materials, instruments, etc., can solve the problems that materials cannot be fully utilized in the prediction period, prediction is too conservative, and the cost is high

Active Publication Date: 2018-04-27
CHINA ACAD OF LAUNCH VEHICLE TECH
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  • Application Information

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Problems solved by technology

[0005] The problem to be solved by the technology of the present invention is: to overcome the deficiencies of the prior art, and provide a composite material fatigue life prediction method, device and

Method used

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  • Fatigue life prediction method of composite material, apparatus and electronic equipment thereof
  • Fatigue life prediction method of composite material, apparatus and electronic equipment thereof
  • Fatigue life prediction method of composite material, apparatus and electronic equipment thereof

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specific Embodiment

[0157] a) Tensile test pieces and compression test pieces for static tests and uniaxial fatigue tests of 0°, 45°, 90° laminated unidirectional plates made of composite material, the composite material is resin matrix with epoxy resin , with carbon fiber as reinforcement, the structure of the tensile test piece is as follows Figure 2a with 2b As shown, the structure of the compression test piece is as follows Figure 3a with 3b As shown, the two test pieces both include aluminum clamping pieces and composite material main structure, where the width of the tensile test piece and the compression test piece are both 25mm, the length of the tensile test piece is 230mm, and the length of the compression test piece is 135mm, the length of the holding piece of the tensile test piece is 50mm, the length of the holding piece of the compression test piece is 55mm, and the holding piece of the tensile test piece has a 15° inclination transition, and the thickness of the holding piece i...

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Abstract

The invention provides a fatigue life prediction method of composite material, an apparatus and electronic equipment thereof, which belong to the fields of material performance prediction and structural design. The method is characterized in that a performance database of a preset angle paving layer unidirectional plate is established, wherein the database comprises fatigue load and fatigue life corresponding to the preset angle paving layer unidirectional plate; a fatigue life curve corresponding to the preset angle paving layer unidirectional plate is constructed according to the performancedatabase; the fatigue life curve of a lamination plate is determined according to the fatigue life curve of the preset angle paving layer unidirectional plate, and the fatigue life of the composite material can be predicted according to the fatigue life curve. The fatigue life prediction method can solve the problems that prediction in the prior art is too conservative, so that the material cannot be fully used, a prediction period is long, and the cost is high.

Description

technical field [0001] The invention relates to a composite material fatigue life prediction method, device and electronic equipment, belonging to the field of material performance prediction and structural design. Background technique [0002] In view of the high specific strength, high specific modulus, good fatigue resistance and vibration damping effect of fiber reinforced composite materials, since the 1980s, it has been more and more favored by engineering designers and has been widely used In aerospace, shipbuilding, automobile and other engineering fields. Especially in the field of aerospace vehicles, its performance advantages and unique designability features are widely used in the structural design of aircraft. [0003] The fatigue life of composite materials directly reflects the service life of composite structures. Therefore, it is necessary to predict the fatigue life of composite materials to ensure that the composite materials are in a normal state during...

Claims

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Application Information

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IPC IPC(8): G01N3/00
CPCG01N3/00G01N2203/0073
Inventor 吴迪黄金钊王悦张莉王晓军邱志平果立成肖凯姚宇地苏玲
Owner CHINA ACAD OF LAUNCH VEHICLE TECH
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