标题:Research on Uniaxial Tension Test of Brain Tissue
作者:Zhao, Feng; Zhou, Jun; Sang, Di; Zhang, Xu-tao; Zhou, Min-fa; Wang, Ding
通讯作者:Zhou, J;Zhou, J
作者机构:[Zhao, Feng; Zhou, Jun; Sang, Di; Zhang, Xu-tao; Zhou, Min-fa; Wang, Ding] Shandong Univ, Sch Mech Engn, Jinan 250061, Shandong, Peoples R China.; [ 更多
会议名称:2017 3rd International Conference on Applied Mechanics and Mechanical Automation (AMMA)
会议日期:AUG 06-07, 2017
来源:3RD INTERNATIONAL CONFERENCE ON APPLIED MECHANICS AND MECHANICAL AUTOMATION (3RD AMMA 2017)
出版年:2017
页码:114-118
关键词:LS-DYNA; Stretch ratio; Failure criterion
摘要:Corresponding to low targeting accuracy due to tissue deformation during the process of electrode insertion in sub-thalamic nucleus deep brain stimulation (DBS), biomechanical properties of brain tissue are essential to investigate. In this paper the isolated porcine brain tissue is used in the uniaxial tensile test. Moreover, cylindrical samples of diameter (10 mm) and height (10 mm) are used to measure tensile length by single degree of axis at 5mm/s, until specimen was broken. The stretch ratio of brain tissue has been explored. The material failure criterion parameters, K, Gamma(1), Gamma(2), of MAT-QUASILINEAR-VISCOELASTIC biological material model in LS-DYNA are fitting calculated according to the experimental results. Six uniaxial failure data obtained from uniaxial tests are 4.81, 5.00, 4.07, 4.62, 4.28, 4.45 respectively. Three failure material constants Gamma(1), Gamma(2), K are -0.0084, -3.1944, -4.8095. The failure criterion is being implemented in LS-DYNA to simulate brain tissue.
收录类别:CPCI-S
资源类型:会议论文
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