摘要
探索生物力学实验数据加载到滑板模型的有效途径,计算足部结构的力学响应。使用CT与3D扫描仪获取足、滑板鞋和滑板数据并建立有限元模型,使用压力平板与压力鞋垫在自然站立状态时验证模型的有效性。所建立模型包括足骨(包括跗骨、跖骨、趾骨以及胫骨腓骨远端)、软组织、滑板鞋面、滑板鞋底、板面、连接桥、轮子以及地面,共408043个节点,260400个网格单元,网格质量为0.79。足底压力峰值实测为80 kPa,仿真所得为82.2 kPa,误差为2.75%。实测板底后轮处最大压力为2.314 MPa,前轮处最大压力为1.427 MPa,仿真所得后轮处应力峰值为2.392 MPa,前轮处的应力峰值为1.479 MPa,误差分别为3.37%与3.64%。本研究构建的滑板鞋-板-足耦合模型具有较好的几何和力学相似性,经验证有效可靠。
This study explored an effective way to load biomechanical data into the model,simulate the moment of skateboard,and calculate the mechanical characteristics of foot structures.A male skateboarder was recruited to select a shoe and skateboard.CT and 3D scan were used to obtain the feet of healthy skateboarder,skateboard shoes and skateboard model,and use Ansys 2020 for modeling and calculations.Sensor Medica pressure plate and Pedar pressure insole were used to obtain the mechanical characteristics of the skateboard and foot when the subjects stood on the skateboard to verify the model.The model consisted of foot bones(including tarsal,metatarsal,phalangeal,and distal tibial fibula),soft tissue,skateboard shoes upper and outsole,board,bridges,wheels and ground.There were 408043 nodes and 260400 mesh cells,and the mesh element quality was 0.79.The measured peak foot pressure was 80 kPa,and the calculated peak foot stress was 82.2 kPa,with an error percentage of 2.75%.The measured peak pressure of the skateboard plate is 2.314 MPa at the rear wheel,the front wheel is 1.427 MPa,the simulated stress peak at the rear wheel is 2.392 MPa,the front wheel is 1.479 MPa,the error percentage is 3.37% and 3.64%.The constructed skateboard shoe-board-foot model has good geometric and mechanical similarity,proving it is effective and reliable.
作者
吴宇森
王海春
朱晓兰
WU Yusen;WANG Haichun;ZHU Xiaolan(Sport Science School,Beijing Sport University,100084 Beijing,China)
出处
《应用力学学报》
北大核心
2025年第1期236-242,共7页
Chinese Journal of Applied Mechanics
基金
国家自然科学基金资助项目(No.72071018)。
关键词
滑板运动
滑板鞋
有限元
多体耦合
生物力学
skateboarding
skateboard shoe
finite element
multibody coupling
biomechanics
