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Evaluation method for critical stress and platform stress of honeycomb paper sheet

A honeycomb paperboard, critical stress technology, applied in special data processing applications, measuring devices, instruments, etc., can solve the problems of cumbersome numerical procedures, inaccurate numerical values, and no reliable basis for evaluating the critical stress and platform stress of honeycomb paperboard, etc. To achieve the effect of the evaluation method to reduce the stool and the relevant test data to be accurate

Inactive Publication Date: 2009-07-01
SHENZHEN POLYTECHNIC
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Problems solved by technology

[0005] In order to solve the problem that there is no reliable basis for evaluating the critical stress and platform stress of honeycomb paperboard in the prior art, it can only be obtained based on empirical estimation or after a large number of tests. A series of technical problems, the present invention provides a honeycomb cardboard critical stress and platform stress evaluation method

Method used

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  • Evaluation method for critical stress and platform stress of honeycomb paper sheet
  • Evaluation method for critical stress and platform stress of honeycomb paper sheet
  • Evaluation method for critical stress and platform stress of honeycomb paper sheet

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Embodiment Construction

[0015] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0016] see figure 1 .Schematic diagram of the quasi-static compressive stress-strain curve of honeycomb paperboard in the prior art. The quasi-static pressure bearing process of honeycomb paperboard can be divided into four stages: linear elastic stage, elastic-plastic stage, plastic collapse stage and densification stage. The compressive stress The strain law curve is as figure 1 shown. There is a key stress point-point B and a key stress plateau segment-line segment CD on its compressive stress-strain curve. The key stress point is the critical stress point within the effective compression range of the honeycomb paperboard, which can evaluate the maximum pressure-bearing performance of the honeycomb paperboard; the key stress platform section is the platform stress within the effective compression range of the honeycomb paperboard, and the stress value is...

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Abstract

The invention relates to an evaluation method for critical stress and plateau stress of honeycomb paperboard, belonging to the performance detection field of honeycomb paperboard. The detection method adopts a measurement device to measure the thickness t of a honeycomb fiberboard medium, the edge length I of honeycomb pores, the elastic modulus Es, the poisson ratio vs and the flexing stress of the honeycomb fiberboard medium and the like; utilizes critical stress detection method and plateau stress evaluation method to process detection and calculation. The invention adopts the evaluation method on the critical stress and plateau stress of honeycomb paperboard to test the data relative to honeycomb paperboard, therefore, obtained relative detection data is accurate and the evaluation method is simple and fast. The evaluation method provides basis for the manufacture, material selection and structure design of honeycomb paperboards.

Description

technical field [0001] The invention belongs to the field of performance detection of honeycomb paperboard, and relates to a method for evaluating critical stress and platform stress of honeycomb paperboard. Background technique [0002] With the development of my country's economy and the increase of trade, in order to alleviate the pressure of my country's timber shortage and reduce logistics costs, the demand for honeycomb cardboard boxes and honeycomb cardboard pallets has been increasing in recent years. Honeycomb paperboard is usually used as a partition or carrier board in transportation packaging. It can also be used to make paper pallets instead of wooden pallets, because wooden pallets need to be fumigated during transit transportation to kill Insect infestations in wooden pallets can affect the quality of goods stored in wooden pallets. [0003] Honeycomb paperboard is used for partitions or paper trays mainly because honeycomb paperboard has high static load-bea...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/00G06F19/00
Inventor 王冬梅
Owner SHENZHEN POLYTECHNIC
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