A Damping Energy Dissipation Evaluation Method for Honeycomb Paperboard Mass System and Its Application
A technology of honeycomb paperboard and mass system, applied in the field of mechanics, can solve the problem of lack of quantitative evaluation of system damping energy consumption
Active Publication Date: 2021-08-20
SHENZHEN POLYTECHNIC
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Problems solved by technology
The quality of the cushioning performance and anti-vibration performance of packaging materials mainly depends on the amount of energy dissipated by damping during vibration. At present, the research on the vibration transmissibility and resonance frequency of the honeycomb paperboard-mass system is mainly based on qualitative analysis, and there is a lack of system damping energy consumption. Quantitative evaluation
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Embodiment 1
[0100] The mass of the product is 16kg, and the size of the bottom surface is 200×200mm 2 , the allowable impact brittleness value is 10g. It is known that the peak acceleration in the vertical direction generated by the vehicle is 0.3g, and its frequency range is 10-200Hz. The impact protection design adopts a comprehensive cushioning method, and a honeycomb paperboard liner with a cell side length of 10mm and a cardboard thickness of 30mm is selected, and the core paper is 110g / m2. 2 corrugated base paper, the thickness is 0.17mm; the surface paper is quantitative 230g / m 2 Kraft paper, the thickness is 0.3mm. Consider fatigue vibrations to determine if such pads provide adequate vibration protection.
[0101] (1) Considering fatigue vibration, the permissible brittleness value of vibration can be expressed as 0.25 times of the impact brittleness value, namely:
[0102]
[0103] (2) Considering the limit conditions, the vibration transmissibility of the product should ...
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Abstract
The invention provides a method for evaluating damping energy consumption of a honeycomb paperboard mass system and its application. The method for evaluating damping energy consumption includes the following steps: obtaining a typical vibration transfer characteristic vibration transfer rate-frequency curve of a honeycomb paperboard, and the curve includes a platform area , amplification area and attenuation area, the vibration transfer characteristic curve of the honeycomb paperboard is expressed as a function of frequency, as shown in formula (1); according to the basic theory of damping energy dissipation, the energy dissipated by the damping of the honeycomb paperboard-mass system in one cycle at any frequency is obtained As shown in formula (2); according to formula (2), the damping energy consumption of the honeycomb paperboard mass system at the time of resonance in the enlarged region is obtained. The technical scheme of the present invention is based on the basic principle of vibration mechanics, provides a calculation method for the energy consumption of the honeycomb paperboard-mass system during the vibration process, provides a basic method for the calculation of the energy consumption of the damping and the evaluation of the anti-vibration performance of the packaging system, and also provides a basis for the calculation of the energy consumption of the packaging system. The choice of honeycomb paperboard provides a basis.
Description
technical field [0001] The invention belongs to the technical field of mechanics, in particular to a method for evaluating damping energy consumption of a honeycomb paperboard mass system and its application. Background technique [0002] In the logistics process, the damage of products mainly comes from the shock and vibration in the logistics environment. Therefore, it is of great significance to study the cushioning and anti-vibration properties of packaging materials for packaging design. Honeycomb paperboard is an environmentally friendly cushioning packaging material. The porous structure of honeycomb makes it have the advantages of light weight, high specific stiffness and specific strength, and stable energy absorption characteristics. It is an effective way to replace foam plastic cushioning materials. The quality of the cushioning performance and anti-vibration performance of packaging materials mainly depends on the amount of energy dissipated by damping during v...
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IPC IPC(8): G01N29/04G01N29/44
CPCG01N29/04G01N29/44G01N2291/0237
Inventor 王冬梅
Owner SHENZHEN POLYTECHNIC