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Jogging fatigue simulation experiment system of resonant internal combustion engine

A fretting fatigue, simulation experiment technology, applied in the direction of internal combustion engine testing, etc., can solve the problem of no resonance fretting fatigue experiment system and so on

Inactive Publication Date: 2014-07-02
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

(References Ruiz C, Boddington PHB, Chen KC.An investigation on fatigue and fretting in a dovetail joint. Exp Mech1984;24:208-17.) At this stage, there is no research on the resonance fretting of structural parts under typical characteristic loads of internal combustion engines Related Papers and Reports on Fatigue Experimental System

Method used

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  • Jogging fatigue simulation experiment system of resonant internal combustion engine
  • Jogging fatigue simulation experiment system of resonant internal combustion engine
  • Jogging fatigue simulation experiment system of resonant internal combustion engine

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Embodiment

[0033]A resonant internal combustion engine fretting fatigue simulation experiment system, the system includes a fretting fatigue device 1, an accelerometer 2, an electronic control component 3, an electric vibration exciter 4, a vibration exciter push rod 5 and two inertial vibration plates 6; The two inertial vibration plates 6 are suspended on the track by the wire rope; the fretting fatigue device 1 is fixed between the two inertial vibration plates 6 through the flange; one end of the exciter push rod 5 is fixed on the electric vibration exciter 4; The other end of the vibrator push rod 5 is fixed on an inertial vibration plate 6; the accelerometer 2 is adhered to another inertial vibration plate 6 by magnetic force, and its position is symmetrical with the exciter push rod 5; the electronic control part 3 is used for Control the electric vibrator 4;

[0034] Wherein, the fretting fatigue device 1 includes a test piece 7, a preload bolt 8, an indenter 9, a U-shaped connec...

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Abstract

The invention relates to a jogging fatigue simulation experiment system of a resonant internal combustion engine, belonging to the technical field of fatigue strength of an internal combustion engine. The jogging fatigue simulation experiment system comprises a jogging fatigue device, an accelerometer, an electronic control component, an electric vibration exciter, a vibration exciter push rod and two inertia vibration plates; and the jogging fatigue device comprises a testing assembly, a pre-tightening bolt, a pressing head, a U-shaped connector, a base, a loading push rod and a load applying shaft. The jogging fatigue simulation experiment system of the resonant internal combustion engine, disclosed by the invention, can be used for researching a problem of jogging fatigue of a structural assembly under the action of a topical characteristic load of an internal combustion engine, and can consider contact of a plane and a plane and carry out a research on a jogging fatigue problem of the testing assembly under the action of different load characteristics and load levels by changing the size of a total load and a proportion relation of a tangent load and a normal load compared with a traditional jogging fatigue simulation experiment.

Description

technical field [0001] The invention relates to a resonant internal combustion engine fretting fatigue simulation experiment system, which belongs to the technical field of internal combustion engine fatigue strength. Background technique [0002] In the working state of the internal combustion engine, the contact surface of the body diaphragm and the main bearing cap is subjected to the combined action of pre-tightening force and alternating normal and tangential loads, which is prone to fretting damage near the contact surface and accelerates the failure of components. Studies have shown that under the same alternating external load, the effect of fretting fatigue will reduce the fatigue life of the specimen by 30% to 50%. The study of fretting fatigue damage law has gradually become a research hotspot in related research fields in recent years. [0003] Experimental research is the most important research method in fretting fatigue damage research. There are several way...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M15/04
Inventor 左正兴李文廖日东孙德林
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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