家蚕前部丝腺准静态轴向拉伸力学特性  

Quasi-static axial tensile mechanical characteristics of silkworm's anterior silk gland

作　　者：田桂中[1] 刘之岭[1] 周宏根[1] 宋江超[2] 朱涛[1] 

机构地区：[1]江苏科技大学机械工程学院,江苏镇江212003 [2]中国农业科学院蚕业研究所,江苏镇江212018

出　　处：《吉林大学学报（工学版）》2015年第3期872-877,共6页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学青年基金项目(51005108)

摘　　要：为了研究仿生微通道的制作工艺和流动特性,提出了符合家蚕前部丝腺特征的生物软组织复合体准静态轴向拉伸力学性能测试方法。以五龄家蚕前部丝腺为试验对象,进行了准静态轴向拉伸试验,观测了拉伸试样断口形貌,测量了前部丝腺体和丝蛋白溶液纤维化过程(简称丝纤维)的准静态轴向拉伸力学性能。应用超弹性材料Ogden模型,构建了家蚕前部丝腺体和丝纤维的准静态轴向拉伸力学本构方程,利用ABAQUS软件进行了试验结果拟合,相关系数达98%以上。结果表明:家蚕前部丝腺体及其丝纤维具有优异的超弹性力学特征,且丝纤维力学性能优于丝腺体的。In order to study the fabrication method and fluidic flow characteristics of bio-micro-channel, a novel measuring method of quasi-static axial tension （QSAT） is proposed for the compound of biological soft tissue with the characteristics of silkworm＇s anterior silk gland （SASG）. The anterior silk gland of fifth instar silkworm is taken as the test material. The experiment of QSAT is conducted using electronic single fiber machine. The fracture morphology of the sample is observed by SEM. The QSAT performances of SASG and fibrosis process of silk protein solution, called as silk fibrosis, are measured. Using hyper-elastic Ogden model, the QSAT mechanical constitutive equations of SASG and silk fiber are established. Based on the model, the fitting curves of experiment data are obtained by ABAQUS with the correlation coefficient of above 98G. Results show that hyper-elastic mechanical property of both SASG and silk fiber is excellent, meanwhile silk fiber outperforms SASG.

关 键 词：工程仿生学 仿生微通道 准静态轴向拉伸 家蚕前部丝腺 微流体系统 生物力学 

分 类 号：TB17[生物学—生物工程] Q66