Lightweight Sole Structure Design And 3D Printing

Lightweight sneakers are favored by consumers because of their many advantages such as light,comfortable,breathable and excellent shock-absorbing performance,which have a huge market prospect.However,the lightweight sneakers currently appear are difficult to enter the market on a large scale due to their weak pertinence,few products and high price.In this paper,starting from the light weight of sneakers,considering the differentiation and personalized customization of different areas of the sole,the mid-sole structure of sneakers was redesigned.In combination with 3D printing technology,lightweight midsole with low cost and excellent performance were successfully prepared,and the rationality and feasibility of the structure were verified by simulation and experiments.This paper firstly analyzes the market prospect of 3D printed lightweight sneakers,compares the advantages and disadvantages of 3D printed lightweight sneakers and traditional sneakers in detail,and comprehensively analyz es the development of 3D printing technology and the promotion effect of the future market size of sneakers on the future development of 3D printed lightweight sneakers.After that,through the research on the status quo of lightweight structure,the resea rch on the performance of 3D printed porous structure and the analysis of the current status of 3D printed sneakers,it is concluded that different areas of the sole of 3D printed lightweight sneakers need to be designed and customized.According to the di fference of different regions in different gait,the design requirements and indexes of different regions were developed.This paper explores the technology of 3D printing sports shoes,including printing methods,materials and printing parameters.In order to achieve light weight,the overall design of the middle sole of the shoe,including regional division,linking mode,regional internal structure design mode,etc.Through the establishment of BCC structure unit model,using the simulation the change of the structure parameters are drawn to the influence of compression deformation,including other conditions unchanged,the bottom side of L1 and L2 can increase compression deformation,the increase of height H will reduce the compression deformation,and different angles of the diameter ratio,and based on the simulated data made the design scope.The impact resistance,elastic recovery and tear resistance of BCC and tetrahedral structural units were investigated through experiments.First,according to the impact resistance,the structure is divided into different areas and the structural units that do not meet the design requirements are excluded.Secondly,the structural units of BCC and tetrahedral conforming to the shock resistance were compressed for 1000 times repeatedly.The compression deformation after compression was all within 5%,and the compression deformation after 0.5 h was all within 1%,which all met the design requirements.Then,the BCC structure and tetrahedral structure conforming to the metatarsal region were tested for tear resistance,and it was found that the BCC structure with the size of 5?5?5 mm and the diameter of 1.5 mm had the best tear resistance performance.Finally,in accordance with the design requirements of different areas of the structure,combined with porosity and the success of printing,determine the overall structure of the sole,to achieve the goal of lightweight sole.According to individual differences and their own needs,a lightweight sole with personal characteristics and a porosity of more than 60% was designed and printed out,finally realizing the combination of personalized customization and lightweight.