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Recoverable energy absorption structure and preparation method thereof

An energy-absorbing structure and duplex technology, applied in mechanical equipment, vibration suppression adjustment, additive processing, etc., can solve the problems of traditional energy-absorbing structures that cannot be reused and difficult to prepare by traditional processes, and achieve high forming accuracy and excellent mechanical properties. , the effect of high energy absorption efficiency

Inactive Publication Date: 2020-02-14
INST OF MACHINERY MFG TECH CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the objectives of the present invention is to provide a method for preparing a recoverable energy-absorbing structure, which is used to solve the problems that the traditional process is difficult to prepare and the traditional energy-absorbing structure cannot be reused

Method used

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  • Recoverable energy absorption structure and preparation method thereof
  • Recoverable energy absorption structure and preparation method thereof
  • Recoverable energy absorption structure and preparation method thereof

Examples

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Effect test

preparation example Construction

[0055] An embodiment of the present invention provides a preparation method based on the recoverable energy-absorbing structure, the method comprising:

[0056] Build an energy-absorbing structure model;

[0057] Input the energy-absorbing structure model into the 3D printer, and adjust the relevant parameters of the 3D printer;

[0058] Put NiTi alloy powder into the 3D printer box, and print the energy-absorbing structure after the 3D printer is preheated;

[0059] Heat treatment of the printed energy-absorbing structure to adjust the M→B of the NiTi alloy 2 phase transition temperature.

Embodiment example 1

[0061] Please refer to Figure 5-Figure 9 , built with UG software figure 2 In the two-ring structure model (10mm×10mm×10mm), the diameter of the ring rod is adjusted to 0.6mm, and the porosity is about 85%, and the model is imported into the host control system of the 3D printer. Adjust the printing parameters, using laser power of 50W, scanning speed of 800mm / s, layer thickness of 0.02mm, interlayer angle of 67°, and scanning distance of 0.10mm (this parameter is an optimized parameter found out according to the experiment, and the performance of the printed structural parts is stable. better formability). Select NiTi powder with an atomic percentage of Ni49% to 51%, Ti49% to 51% (this composition range has excellent formability, elasticity and recovery performance after heat treatment), and fill the powder into the powder box to carry out the pre-processing of the printer. Heat and chamber atmosphere regulation. After the preparatory work is completed, start to print th...

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Abstract

The invention discloses a recoverable energy absorption structure and a preparation method thereof. The recoverable energy absorption structure comprises a plurality of energy absorption layers whichare sequentially stacked from top to bottom, wherein each energy absorption layer comprises a plurality of energy absorption units; each energy absorption unit comprises a plurality of elastic connecting pieces; the upper ends of the elastic connecting pieces are connected with an upper connecting point; the lower ends of the elastic connecting pieces are connected with a lower connecting point; agap is formed between the parts, except the two ends, of every two adjacent elastic connecting pieces; and the elastic connecting pieces are made of NiTi alloy. According to the recoverable energy absorption structure, the problem that a traditional energy absorption structure cannot be repeatedly used is solved, and the mechanical property of the structure is improved; the preparation method canbe used for preparing the energy absorption structure which can be repeatedly used, and the prepared energy absorption structure has good mechanical property; and the preparation method can give consideration to the mechanical property and the preparation efficiency of the energy absorption structure.

Description

technical field [0001] The invention relates to the field of energy-absorbing structures and methods for preparing energy-absorbing structures, in particular to a recoverable energy-absorbing structure and a method for preparing the same. Background technique [0002] Landers in outer space, such as lunar rovers and Mars landers, require lightweight, vibration-absorbing, energy-absorbing, and reusable vibration-damping structures to buffer the vibrations generated during the landing process and detection movement, so as to ensure that the internal components of the probe are not damaged. Vibration and shock damage. [0003] The shortcomings of traditional materials (steel, aluminum alloy, copper alloy, etc.) that are not recoverable (non-reusable) after being plastically deformed by impact. Contents of the invention [0004] One of the objectives of the present invention is to provide a recoverable energy-absorbing structure, which is used to solve the disadvantage of non...

Claims

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Application Information

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IPC IPC(8): F16F15/00B33Y10/00B33Y40/00B33Y70/00B33Y80/00B22F3/105B22F3/24B22F3/11C22C19/03C22C14/00
CPCB33Y10/00B33Y40/00B33Y70/00B33Y80/00F16F15/00
Inventor 张圣旺杨琴陈捷葛继强王英英王国伟沈显峰黄姝珂
Owner INST OF MACHINERY MFG TECH CHINA ACAD OF ENG PHYSICS
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