Mechanical experiment method for judging compression fatigue of arenga engleri fiber mattress

Abstract

The invention provides a mechanical experiment method for judging compression fatigue of an arenga engleri fiber mattress. The mechanical experiment method comprises the following steps of S1, placing an arenga engleri fiber mattress test block on an MTS universal material testing machine, and adjusting the central position of the arenga engleri fiber mattress test block, S2, initializing the displacement and load of the initial position of the arenga engleri fiber mattress, and adjusting an upper clamping plate and a lower clamping plate to be pressed on the test arenga engleri fiber mattress; S3, applying a load to the test arenga engleri fiber mattress, setting loading time, automatically unloading after the loading time is ended, and carrying out a second experiment, S4, measuring and recording the thickness of the test arenga engleri fiber mattress before and after the experiment, repeating the experiment for a circle, and ending the experiment until the test arenga engleri fiber mattress rebounds to the thickness before the experiment after the experiment, and S5, converting the displacement load data obtained by the experiment into stress-strain data, and comparing the stress-strain data with the final deformation rate. According to the method, the compression fatigue performance of the arenga engleri mattress can be rapidly and effectively obtained, and the size, thickness and comfort of the mattress suitable for long-term use of people can be better found.

Description

technical field [0001] The invention relates to the technical field of mechanics, in particular to a mechanical experiment method for judging the compression fatigue of a mountain palm fiber mattress. Background technique [0002] With the continuous progress of social civilization and the innovation and development of science and technology, the ordinary mattresses of the old age are being abandoned by people and replaced by new natural mattresses. Among them, mountain palm fiber mattresses are more widely used. The mountain palm fiber mattress has good air permeability, is natural and harmless, and meets people's environmental protection standards. However, during the use of the mountain palm fiber mattress, the human body will have a squeezing effect on the mattress lying on the mattress for a long time. Repeatedly squeezing the mattress for a long time will cause irreversible deformation of the mattress, and even cause depressions. . [0003] When the human body lies f...

AI Technical Summary

Problems solved by technology

However, during the use of the mountain palm fiber mattress, the human body will have a squeezing effect on the mattress lying on the mattress for a long time. Repeatedly squeezing the mattress for a long time will cause irreversible deformation of the mattress, and even cause depressions.

[0003] When the human body lies flat, an external force will be generated on the mattress, causing the mattress to be repeatedly loaded by external forces for a long time, causing damage to the interior of the mattress, resulting in an unstable structure and causing the mattress to sag

This kind of external force when the human body lies flat will compress the mattress for a long time and cause fatigue damage. The long-term repeated compression of the mattress will cause permanent deformation of the mattress, which involves the life of the mattress and the problem of damage detection. However, at present, domestic and foreign No in-depth research has been done on this

Images