Cushion Mechanism of Goat Hoof Bulb Tissues
Cushion Mechanism of Goat Hoof Bulb Tissues
复制标题
山羊蹄球组织的缓冲机制
DOI：
10.1155/2019/3021576
复制
发表时间：
2019-11-06
影响因子：
2.2
通讯作者：
Cong, Qian
中科院分区：
文献类型：
--
作者：
Tian, Weijun;Liu, Hai;Cong, Qian
为探讨有蹄动物蹄球组织显微结构中的缓冲机制，采用体视显微镜和扫描电镜对白色山羊蹄球切片进行了观察。蹄球由表皮层、真皮层和皮下组织组成。以正常动物模型为对照，建立了基于蹄球组织复合结构的仿生模型。采用有限元法对鳞茎组织进行了微观力学分析。仿真结果表明，当顶板以1-10 m/s的速度撞击仿生模型时，应力集中在表皮层，均匀分布在真皮层和真皮乳头，有效地减小了对地面的冲击。真皮层中的真皮乳头具有储存、释放和耗散冲击能量的功能，三者协同作用形成缓冲垫。
The hoof bulb sections of white goats were observed via scanning electron microscopy and stereomicroscopy in order to explore the cushion mechanism in the bulb tissue microstructures of hoofed animals. The hoof bulbs consisted of multilayer tissues, including an epidermal layer, a dermal layer, and subcutaneous tissues from outside to inside. A bionic model based on hoof bulb tissue composite structures was built with a normal model as the control. The microcosmic mechanics of the bulb tissues was analyzed via the finite element method. Simulations showed that when the bionic model was impacted by the top plates at the speed of 1-10 m/s, stress was concentrated in the epidermal layer and uniformly distributed in the dermal layer and dermal papillae, which effectively reduced the impact onto the ground. The cornified epidermal layer can resist the instant impact onto the ground, while the dermal papillae embedded in the dermal layer can store, release, and dissipate the impulsive energy, and the three parts synergically act in the cushion.