CAE技术在运动鞋中底结构设计中的应用

运动鞋中底是运动鞋结构设计的重点。运用CAE分析技术,确定了脚部软组织和热塑性橡胶的材料模型,对人脚和中底建立了有限元分析模型,进行了静力接触分析,得到了脚和中底的应力和位移分布规律。通过分析结果可以检验结构设计方案的可行性,并且在保证功能的前提下,能够进一步优化结构参数,既保证中底产生一定的变形量,以增加脚底受力的均匀性和产生能量回归效应,又可以降低鞋底重量,从而实现运动鞋的轻量化和舒适性。通过改变载荷数值,可以考察中底在不同状态下的应力和位移分布规律,并且可以检验中底所能承受的极限载荷。结果表明,CAE分析技术的应用,对于缩短运动鞋开发周期,降低生产成本,保证产品质量具有重要意义。

Application of CAE Technology in the Structure Design of Athletic Shoes'''' Midsole

The midsole was very important in the structure design of the athletic shoes.The material models of the Foot Soft Tissue and Thermal Plastic Rubber(TPR) were defined,and the Finite Element Analysis Model of the foot and the midsole was set up by computer numerical simulation technology.The figures of stress distribution and displacement distribution were acquired by implementing the Static Contact Analysis.The feasibility of the midsole structure alternatives can be demonstrated by the analysis results.Moreover,the structure parameters can be optimized,on the one hand,it can result in appropriate midsole deformation to improve the uniformity of stress distribution on the heelpad and Energy Spring-back Effect;on the other hand,it can decrease the weight,so that the shoes become lighter and more comfortable.The discipline of stress distribution and displacement distribution can be demonstrated in different load conditions and the limit load can be quantified by changing the value of load.It was indicated that the application of CAE technology was very significant to shorten the development cycle and reduce the production cost and improve the quality in the structure design of athletic shoes.