The Bionic Studies On The Key Parts Of Sprint Shoes Based On The Tractive And Cushioning Characteristics Of Ostrich Foot

The paper aimed at the exellent traction and buffer characteristics, based on thestructures and movement performance, according to the function and structualcharacteristics of sprint shoes, using the engineering principle and method of bionics tostudy the sessile, acceleration and buffer performance of sprint shoes. The aim of thsresearch is to decrease the resistance, increase the thrust, improve the stable and bufferperformance. With analysing the contribution of ostrich toenail in the process of travelingon sand, in line with the mechanism of traveling on sand and the reverse engineeringtechnology, this paper design a new type of bionic sprint shoes. Furthermore, drawinglessons from the mature theory of arraying spikes, on the basis of distributing character ofhuman foot, this article optimized the distribution of spikes with the help of the experimentsand simulation. Comfirmed the structure and movement character of digital pad andmetatarsophalangeal joint. Based on the analysis result, this paper designed a bionic crashpad and bumper. At last, grouped the bionic spikes, crash pad and bumper into the bionicsprint shoes which has the fine acceleration and buffering performance.The means of macroscopic observation and measurement were used to study theinfluncing mechanism of ostrich foot`s structure and surface on excellent performancetraveling on sand. High-speed video analysis and numerical simulation were used to explorethe mechnism and influcing factors of toenail`s abilities in fixing sand and increasingtraction. And the link between the toenail`s structure and good perforce of traveking on sand.Moreover, buffering and endergonic characteristics were studied, in the line with knowledgeof histoembryology, observed the inner structure of footpad through the anatomyexperiment. According to the results of observing on the paraffin sections of foootpa,mocristructures and biotic components were understood. The tensile test on digital pad ofthe third toe was carried out. Based on the results of observation and experiments, thereason of digital pad`s excellent performence in buffering and absorbing energy wasexplained.According to the good performance in fixing sand and traction. The reconstructual model of toenail was gained with the help of reversing engineering technology. In the linewith the associated mechanism between structual and aractive ability, engineering bionicsmethods were used to disign the new spikes, and the spikes were optimized through FEM.The results of experiments and simulations show that the thrust of bionic spike is larger thannormal spike, stationarity ability and acceleration ability were better than the normal spike。Aimed at the configuration mode`s influcement on griping and acceleratingperformance, there deffierent kind of spikes were designed, and the stationarity abilities andacceleration abilities of these spikes were compared with the finite simulation. Based on thesimulating outcome, the optimal arrangement scheme were confirmed. Furthermore, thebionic spike, normal spike, bionic shoe sole and normal shoe sole were processed, and theresistence test and thrust test were conducted under three kinds of loads and two kinds ofvelocities respectively, after that, corresponding simulations were finished. The results ofexperiment and simulation showed that the configuration mode of spikes made a differencein the grip and horizontal thrust. The bionic shoe sole contains has the lower risistence thanthe normal one, while the thrust of the bionic shoe sole is larger than the normal shoe sole.Three-dimensional point cloud of the digital pad was obtained with the help of3Dlaser scanner. The relative position and shape of every digital pad were confirmed by theMRI. Based on the reversing engineering technology and three dimensional modelingtechnology, the structual units of bionic shoe sole wre gained. According to these bionicunits, and regarding the design principle of bufuring, bionic buffering shoe sole wasdesigned. Used ABAQUS to simulate the working process of the bionic shoe sole, and theresult showed that the bionic shoe sole has good performance of buffering and absorbingenergy. Based on the concequences from the observition and anatomy on the ostrichmetatarsophalangeal joint, the buffering and absorbing energy effects of.ostrichmetatarsophalangeal joints were studyed, and the mechanism was comprehended. In the linewith the reseach consequence, a new type of heel bumper. A heel bumper were designed.The ADMAS software was used to analyse the dynamic characteristics of bionic heelcushion. The working safety and stability was confirmed. Based on the reseach results ofbionic spikes, spikes configuration scheme, bionic cuhsion and heel bumper, and consideredthe designing standard of runnibg shoes, a new kind of bionic sprint shoes was designedthrough resonable assembling. This bionic sprint shoes take position of excellent grip,acceleration and buffering performance. The good stability and safety can be found in thistype of sprint shoes.