Honeycomb buffering device capable of improving energy absorption efficiency and design method thereof

A technology of a honeycomb buffer device and a design method, which are applied in the directions of transportation and packaging, containers to prevent mechanical damage, and vehicle safety arrangements, can solve problems such as difficulty in effectively increasing the average stress and difficulty in effectively reducing the peak stress, and achieve effective energy absorption. The effect of improving efficiency, reducing initial peak stress, and improving energy absorption efficiency

Active Publication Date: 2016-11-09
CHINA ACADEMY OF SPACE TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the average stress of the honeycomb buffer device is closely related to the structural parameters, and it is difficult to effectively increase the average stress without changing the structural parameters, and it is also difficult to effectively reduce the peak stress of the traditional honeycomb buffer device.

Method used

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  • Honeycomb buffering device capable of improving energy absorption efficiency and design method thereof
  • Honeycomb buffering device capable of improving energy absorption efficiency and design method thereof
  • Honeycomb buffering device capable of improving energy absorption efficiency and design method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The side length l of the honeycomb cell is 6mm, the w is 6mm, the thickness t is 0.04mm, and the cell angle α is 30°. Establish coordinate system 1, take the hollow direction of the honeycomb cell in the non-folding area as the Z-axis direction of the coordinate system, and select the direction of any side length of the honeycomb cell on the plane perpendicular to the Z-axis and at the junction of the folding area and the non-folding area as the X-axis direction, Determine the Y-axis direction according to the right-hand rule; fold the honeycomb twice along different planes. After the first fold, the angle between the honeycomb structure in the folded area and the direction of the XZ plane is 18°, and the angle between the direction of the YZ plane is 24°. The height of a folded honeycomb is 0.81mm. The direction of the second folding is opposite to that of the first folding. After the same folding, the angle between the honeycomb structure in the folded area and the di...

Embodiment 2

[0045] The side length l of the honeycomb cell is 6mm, the w is 6mm, the thickness t is 0.04mm, and the cell angle α is 30°. Establish coordinate system 1, take the hollow direction of the honeycomb cell in the non-folding area as the Z-axis direction of the coordinate system, and select the direction of any side length of the honeycomb cell on the plane perpendicular to the Z-axis and at the junction of the folding area and the non-folding area as the X-axis direction, Determine the Y-axis direction according to the right-hand rule; fold the honeycomb twice along different planes. After the first fold, the angle between the honeycomb structure in the folded area and the direction of the XZ plane is 53°, and the angle between the direction of the YZ plane is 65°. The height of a folded honeycomb is 0.81mm. The direction of the second folding is opposite to that of the first folding. After the same folding, the angle between the honeycomb structure in the folded area and the di...

Embodiment 3

[0048] The side length l of the honeycomb cell is 6mm, the w is 6mm, the thickness t is 0.04mm, and the cell angle α is 30°. Establish coordinate system 1, take the hollow direction of the honeycomb cell in the non-folding area as the Z-axis direction of the coordinate system, and select the direction of any side length of the honeycomb cell on the plane perpendicular to the Z-axis and at the junction of the folding area and the non-folding area as the X-axis direction, Determine the Y-axis direction according to the right-hand rule; fold the honeycomb twice along different planes. After the first fold, the angle between the honeycomb structure in the folded area and the direction of the XZ plane is 69°, and the angle between the direction of the YZ plane is 76°. The height of a folded honeycomb is 0.81mm. The direction of the second folding is opposite to that of the first folding. After the same folding, the angle between the honeycomb structure in the folded area and the di...

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Abstract

The invention provides a honeycomb buffering device capable of improving energy absorption efficiency and a design method thereof. Honeycomb cell elements are divided into a folding area and a non-folding area; the honeycomb cell elements in the folding area are subjected to one-time or multiple folding treatment with the same angle or with different angles in the different face direction; in every folding, and the height of the honeycomb cell elements (please see the specifications for the formula) is used for conducting series connection of the honeycomb cell elements in the folding area and the honeycomb cell elements in the non-folding area; and after connection, the honeycomb cell elements are arrayed in the plane perpendicular to the different face direction. The peak stress of the honeycomb buffering device can be effectively lowered, and the energy absorption efficiency of the honeycomb buffering device can be improved.

Description

technical field [0001] The invention relates to a honeycomb buffer device and a design method for improving energy absorption efficiency, which are used in the fields of passive safety protection, planet detection and landing buffer, and the like. Background technique [0002] The honeycomb buffer device is widely used in the field of passive safety protection of rail vehicles and the field of planetary exploration and landing buffer energy absorption due to its strong buffer energy absorption capacity, controllable deformation and less influence by environmental factors. At present, the buffer performance of honeycomb buffer device is usually evaluated by the ratio of honeycomb average stress to peak stress, that is, the energy absorption efficiency of honeycomb buffer device. Improving the energy absorption efficiency of the honeycomb buffer is mainly achieved by increasing the average stress or reducing the peak stress of the honeycomb buffer. However, the average stress...

Claims

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Application Information

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IPC IPC(8): B65D81/03B60R19/18
CPCB60R19/18B60R2019/1866B65D81/03
Inventor 李萌姚娜宋琦崔方明贾海鹏
Owner CHINA ACADEMY OF SPACE TECHNOLOGY
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