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嵌入式类蜂窝结构面外力学性能研究

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提出一种嵌入式类蜂窝结构,采用能量法推导其单(双)壁厚夹芯结构的面外等效力学参数公式,利用数值模拟方法验证其力学模型及公式的正确性;研究嵌入式类蜂窝芯层结构尺寸对其面外力学性能的影响,结果表明:在其他结构尺寸一定的情况下,当四边形壁厚与八边形壁厚之比a增大时,该结构的面外等效弹性模量和剪切模量随之增大,当八边形边长与其壁厚之比β增大时,该结构的面外等效弹性模量和剪切模量随之减小,并且β值到达50左右时,剪切模量趋于稳定,由此发现面外等效弹性模量受尺寸参数影响较剪切模量明显.此研究为后续嵌入式类蜂窝结构在工程中的应用提供了理论支撑.
Study on Out-of-Plane Mechanical Properties of Embedded Quasi-Honeycomb Structure
An embedded quasi-honeycomb structure is innovated and the formula of out-of-plane equivalent mechanical param-eters of it with single(double)wall thickness is derived by energy method,and the correctness of the mechanics model and formula is verified by numerical simulation.The influence of embedded quasi-honeycomb core structure size on its out-of-plane mechani-cal properties was studied.The results show that when other structure sizes are constant,when the ratio of quadrilateral wall thick-ness to octagonal wall thickness a increases,the out-of-plane equivalent elastic modulus and shear modulus of the structure in-crease.When the ratio of octagonal wall thickness to octagonal wall thickness β increases,the out-of-plane equivalent elastic modulus and shear modulus of the structure decrease.When β reaches about 50,the shear modulus tends to be stable.It is found that the out-of-plane equivalent elastic modulus is significantly affected by size parameters than the shear modulus.This study provides theoretical support for the subsequent application of embedded quasi-honeycomb structures in engineering.

Embedded Quasi-HoneycombOut-of-Plane Mechanical PropertiesMechanical ModelEnergy MethodNumerical SimulationStructural Size

李响、宋小俊、王艳苗、曹祥斌

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三峡大学水电机械设备设计与维护湖北省重点实验室,湖北 宜昌 443002

三峡大学机械与动力学院,湖北 宜昌 443002

嵌入式类蜂窝 面外力学性能 力学模型 能量法 数值模拟 结构尺寸

湖北省教育厅科学技术研究计划重点项目机器人与智能系统宜昌市重点实验室(三峡大学)开放基金项目国家自然科学基金青年科学基金项目

D20181206JXYC0001551305232

2024

机械设计与制造
辽宁省机械研究院

机械设计与制造

CSTPCD北大核心
影响因子：0.511
ISSN：1001-3997
年,卷(期)：2024.403(9)
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