考虑强健爪外骨骼三维形状和内部特性的椰子蟹挤压模拟

IF 7.9 Q1 ENGINEERING, MULTIDISCIPLINARY
Tadanobu Inoue , Michinori Iwai
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引用次数: 0

摘要

对椰子蟹(Birgus latro)进行了挤压模拟,以量化当施加如此大的力时施加在爪指上的应力。椰子蟹的挤压力是其体重的80倍。采用微聚焦x射线计算机断层扫描技术获得爪外骨骼的三维(3D)形状和内部信息(硬外皮层和软外皮层)。根据这些数据,利用图像分析软件重建了爪的三维模型,并利用有限元分析进行了夹紧仿真。夹紧力(Rf)计算为活动手指在爪内旋转时与不锈钢棒接触区域的节点反力之和,并给出了固定手指和活动手指在旋转过程中的von Mises应力σmises。结果表明,应力随旋转角度增大而增大,当旋转角度为2.8°,反作用力为957 N时,固定指处应力为1.8 GPa,活动指处应力为588 MPa,杆处应力为674 MPa。这种科学的挤压模拟证实了椰子蟹爪的非凡力量。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Pinching simulation of the coconut crab considering the 3D shape and internal characteristics of the robust claw exoskeleton
A pinching simulation of the coconut crab, Birgus latro, which has a pinching force 80 times its body mass, was performed to quantify the stress imposed on the claw fingers when such a large force is applied. Data on the three-dimensional (3D) shape and internal information (hard exocuticle layer and soft endocuticle layer) in the claw exoskeleton were obtained using microfocus X-ray computed tomography. From these data, a 3D model of the claw was reconstructed using image analysis software, and a pinching simulation was performed using finite element analysis. The pinching force (Rf) was calculated as the sum of the node reaction forces in the area that came into contact with the stainless rod while the movable finger rotated within the claw, and the von Mises stress, σmises, in the fixed and movable fingers during the rotation were shown. The results showed that the stress increased with the angle of rotation, and at an angle of rotation of 2.8° and a reaction force of 957 N, stresses of 1.8 GPa were generated in the fixed finger, 588 MPa in the movable finger, and 674 MPa in the rod. This scientific pinching simulation confirmed the exceptional strength of the coconut crab's claw.
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来源期刊
Results in Engineering
Results in Engineering Engineering-Engineering (all)
CiteScore
5.80
自引率
34.00%
发文量
441
审稿时长
47 days
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