STUDY ON QUASI-STATIC СОMPRESSIVE STRESS OF REINFORCED HONEYCOMBWITH THEORETICS, NUMERICAL SIMULATION AND EXPERIMENT

XU Peng; XIA DongWei; WANG ChengQiang; SONG Yang

doi:10.16579/j.issn.1001.9669.2024.01.012

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STUDY ON QUASI-STATIC СОMPRESSIVE STRESS OF REINFORCED HONEYCOMBWITH THEORETICS, NUMERICAL SIMULATION AND EXPERIMENT

更新时间：2024-04-18

- STUDY ON QUASI-STATIC СОMPRESSIVE STRESS OF REINFORCED HONEYCOMBWITH THEORETICS, NUMERICAL SIMULATION AND EXPERIMENT
- Journal of Mechanical Strength Vol. 46, Issue 1, Pages: 87-95(2024)
- 作者机构：
  
  1. 中车长春轨道客车股份有限公司
  2. 深圳市乾行达科技有限公司
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2024.01.012
  CLC： U270.34
- Published：15 February 2024，
- 稿件说明：
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XU Peng, XIA DongWei, WANG ChengQiang, et al. STUDY ON QUASI-STATIC СОMPRESSIVE STRESS OF REINFORCED HONEYCOMBWITH THEORETICS, NUMERICAL SIMULATION AND EXPERIMENT. [J]. Journal of Mechanical Strength 46(1):87-95(2024)
DOI：

XU Peng, XIA DongWei, WANG ChengQiang, et al. STUDY ON QUASI-STATIC СОMPRESSIVE STRESS OF REINFORCED HONEYCOMBWITH THEORETICS, NUMERICAL SIMULATION AND EXPERIMENT. [J]. Journal of Mechanical Strength 46(1):87-95(2024) DOI： 10.16579/j.issn.1001.9669.2024.01.012.

摘要

为拓宽加强型蜂窝应用，研究其力学性能与结构参数的关系。首先，分析加强型蜂窝的结构，提取Y型胞元，以此为基础分析塑性铰单元。然后，将简化超折叠理论应用到Y型胞元结构折叠变形吸能分析，并分别利用基于屈雷斯佳和米塞斯屈服准则，推导蜂窝异面方向准静态平台应力理论模型。再次，选用壁厚为0.15 mm、边长为2.5 mm的铝合金5052H18，通过Ls-Dyna 建立蜂窝仿真模型，获得平均应力，并将理论值与仿真值进行对比。结果表明，2种屈服准则下，理论值与仿真结果相关性为0.96，偏差在-12.16%~3.60%。最后，对普通型和“4+1”型蜂窝制样进行准静态压缩测试，结果表明，2种规格理论强度与实际测试强度偏差在-2.51%~1.56%。说明理论计算式正确，可为加强型蜂窝选型提供有效的设计依据，为工程应用提供一定的指导价值。

Abstract

The quasi-static compressive stress of reinforced honeycomb is studied. Firstly

the structure of the reinforeed honeycomb is analyzed

the Y-shaped cells are extracted

and the plastic hinge is analyzed based on this. Then

referring to the simplified superfolding theory

based on Tresca and Mises yield criterion

the theoretical formula of axial plateau stress is deduced. Thirdly

the aluminum alloy 5052H18 with a wall thickness of 0. 15 mm and a side length of 2. 5 mm is selected

and the honeycomb simulation model is established by Ls-Dyna to obtain the average stress. Comparing the theoretical value with the simulated value

the results show that: under the two yield criteria

the correlation between the theoretical value and the simulation result is 0.96

and the deviation is from -12.16% to 3.60%. Finally

the sample preparation and quasi-static test of ordinary and "4+1"honeycombs shows that the deviation between the theoretical strength and the actual strength of the two specifications is between -2.51% and 1.56%. It shows that the theoretical calculation formula given in this paper is correct

which can provide an effective design basis for the selection of reinforeed honeycombs

and provide a certain guiding value for engineering applications.

关键词

加强型蜂窝准静态压缩数值模拟试验对比

Keywords

Reinforced honeycombQuasi-static compressionNumerical simulationTest comparison

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