毛蚶贝壳曲面承压力学特性及断裂机理

doi:10.13229/j.cnki.jdxbgxb20180926

吉林大学学报(工学版) ›› 2019, Vol. 49 ›› Issue (3): 897-902.doi: 10.13229/j.cnki.jdxbgxb20180926

毛蚶贝壳曲面承压力学特性及断裂机理

吴娜¹(),庄健²,张克松¹,王慧鑫²,马云海²()

1. 山东交通学院汽车工程学院, 济南 250023
2. 吉林大学工程仿生教育部重点试验室, 长春 130022

收稿日期:2018-09-12 出版日期:2019-05-01 发布日期:2019-07-12
通讯作者: 马云海 E-mail:wuna1978@163.com;myh@jlu.edu.cn
作者简介:吴娜（1977?），女，副教授，博士.研究方向：仿生机械工程. E?mail：wuna1978@163.com
基金资助:
国家自然科学基金青年科学基金项目(51505259);山东省自然科学基金项目(ZR2015EL026)

Compression mechanical properties and fracture mechanism of Scapharca Subcrenata shell

Na WU¹(),Jian ZHUANG²,Ke⁃song ZHANG¹,Hui⁃xin WANG²,Yun⁃hai MA²()

1. College of Automotive Engineering, ShanDong Jiaotong University, Jinan 250023, China
2. Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China

Received:2018-09-12 Online:2019-05-01 Published:2019-07-12
Contact: Yun?hai MA E-mail:wuna1978@163.com;myh@jlu.edu.cn

摘要/Abstract

摘要：

以毛蚶贝壳为研究对象，采用力学试验机对鲜体、浸泡体和干体不同含水状态下的毛蚶贝壳进行了曲面承压试验。通过贝壳承压力学试验数据和贝壳裂痕特征及微观结构进行毛蚶贝壳曲面的整体承压特性和破坏规律分析。结果表明，毛蚶贝壳在鲜体状态时曲面承压性能最好，浸泡体由于有机质流失其曲面承压性能下降，干体状态时曲面承压性能最差，且3种状态下贝壳的裂纹扩展和裂痕变化不同。本研究可为贝壳曲面力学性能研究和仿生应用研究提供重要的参考价值。

关键词: 工程仿生学, 贝壳曲面, 承压载荷, 力学特性, 断裂机理

Abstract:

The clamshell was used as the research object, and three types of clamshells under different water conditions were carried out by mechanical testing machine,including of the fresh, soaked and dry shells.Based on the experimental data of bearing pressure and the crack characteristics and microstructure of shell, the whole bearing pressure characteristics and fracture law of clamshell surface were analyzed. The results showed that the pressure performance of the shell surface is the best in the fresh body. The mechanical properties in soaked bodies decreased because of the loss of the organic matter after the soaking. The compression capacity declined sharply when the shell was dry.The reason was that the water lost in the shell body and the organic matter dried up. the shell crack propagation and shell crack change were different in the three states. This study will provide important reference value for the study of mechanical properties and biomimetic application of shell surfaces.

Key words: engineering bionics, shell surface, load pressure, mechanical properties, fracture mechanism

中图分类号:

TB17

吴娜,庄健,张克松,王慧鑫,马云海. 毛蚶贝壳曲面承压力学特性及断裂机理[J]. 吉林大学学报(工学版), 2019, 49(3): 897-902.

Na WU,Jian ZHUANG,Ke⁃song ZHANG,Hui⁃xin WANG,Yun⁃hai MA. Compression mechanical properties and fracture mechanism of Scapharca Subcrenata shell[J]. Journal of Jilin University(Engineering and Technology Edition), 2019, 49(3): 897-902.

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方程参数	试验贝壳状态
方程参数	鲜体	浸泡体	干体
a	118.05	177.25	86.12
b ₁	22270.40	51037.31	25586.46
b ₂	1.97	-1.41	-1.87
b ₃	-3.83	3.09	4.98
b ₄	2.37	-1.76	3.12
R ₂	0.9997	0.9998	0.9957

承压载荷/N	贝壳承压形变量 /mm
承压载荷/N	鲜体	浸泡体	干体
200	0.045	0.014	0.178
300	0.085	0.098	0.223
500	0.179	0.184	None

毛蚶贝壳曲面承压力学特性及断裂机理

Compression mechanical properties and fracture mechanism of Scapharca Subcrenata shell

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