蹦床网面力学性能的实验和数值研究
发布时间：2019-01-05 18:07
【摘要】：对国际蹦床比赛所用的弹性网面进行了力学性能测试分析研究。首先对网面进行静态加载,得到网面不同网格处的荷载-垂直位移曲线,求得了不同网格处的垂直刚度系数和1/4网面的垂直刚度分布方程;再用ABAQUS软件对蹦床网面进行模拟,结合静载数据反分析得到网面的等效弹性模量。结果表明:对于整个网面,网格越到中间,垂直刚度系数越小,即网面中间区域最软,越到边上区域网面越硬;位移和应力从网面中央向四周逐渐减小,而在对角线上较大,并且网面边缘存在应力集中;根据等效弹性模量计算得到的网面中心的荷载-垂直位移曲线与实验数据吻合较好。研究结果可作为运动员提高技术水平和进行弹跳技术理论分析的数据支撑。
[Abstract]:The mechanical properties of elastic mesh used in international trampoline competition were studied. Firstly, the load-vertical displacement curve of different mesh is obtained by static loading, and the vertical stiffness coefficient of different mesh and the vertical stiffness distribution equation of 1 / 4 mesh are obtained. ABAQUS software is used to simulate the trampoline mesh surface, and the equivalent elastic modulus of the trampoline surface is obtained by back analysis of static load data. The results show that for the whole mesh, the more meshes to the middle, the smaller the vertical stiffness coefficient, that is, the softest in the middle area and the harder in the edge area. The displacement and stress decrease gradually from the center to the periphery of the mesh, but are larger in the diagonal line, and the stress concentration exists in the edge of the mesh, and the load-vertical displacement curve of the center of the mesh calculated according to the equivalent elastic modulus is in good agreement with the experimental data. The results can be used as data support for athletes to improve their technical level and to carry out theoretical analysis of jumping technology.
【作者单位】： 太原理工大学应用力学与生物医学工程研究所;太原理工大学力学学院;山西省体育科学研究所;
【基金】：国家体育总局重点研究领域攻关课题资助项目:蹦床运动员网上专项技术分析与专项力量训练的研究(2011B038)
【分类号】：G838;O39
，
本文编号：2402125
[Abstract]:The mechanical properties of elastic mesh used in international trampoline competition were studied. Firstly, the load-vertical displacement curve of different mesh is obtained by static loading, and the vertical stiffness coefficient of different mesh and the vertical stiffness distribution equation of 1 / 4 mesh are obtained. ABAQUS software is used to simulate the trampoline mesh surface, and the equivalent elastic modulus of the trampoline surface is obtained by back analysis of static load data. The results show that for the whole mesh, the more meshes to the middle, the smaller the vertical stiffness coefficient, that is, the softest in the middle area and the harder in the edge area. The displacement and stress decrease gradually from the center to the periphery of the mesh, but are larger in the diagonal line, and the stress concentration exists in the edge of the mesh, and the load-vertical displacement curve of the center of the mesh calculated according to the equivalent elastic modulus is in good agreement with the experimental data. The results can be used as data support for athletes to improve their technical level and to carry out theoretical analysis of jumping technology.
【作者单位】： 太原理工大学应用力学与生物医学工程研究所;太原理工大学力学学院;山西省体育科学研究所;
【基金】：国家体育总局重点研究领域攻关课题资助项目:蹦床运动员网上专项技术分析与专项力量训练的研究(2011B038)
【分类号】：G838;O39
，
本文编号：2402125
本文链接：https://www.wllwen.com/kejilunwen/lxlw/2402125.html
