本文關(guān)鍵詞：基于鴕鳥足墊優(yōu)異緩沖特性的運(yùn)動(dòng)鞋緩震中底仿生研究　出處：《吉林大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 鴕鳥足墊 緩震 運(yùn)動(dòng)鞋中底 沖擊試驗(yàn) 工程仿生學(xué)

【摘要】：基于鴕鳥足墊優(yōu)異的緩沖性能并受到這一性能的啟發(fā),以鴕鳥足墊為生物原型,基于三維激光掃描技術(shù)、核磁共振成像技術(shù)及逆向工程技術(shù),并結(jié)合工程仿生學(xué)原理,將鴕鳥足墊應(yīng)用于運(yùn)動(dòng)鞋中底的結(jié)構(gòu)和材料仿生設(shè)計(jì),得到了一種新型的具有優(yōu)良緩震性能的仿生運(yùn)動(dòng)鞋中底。利用有限元分析軟件,對鞋底進(jìn)行沖擊工況下的數(shù)值模擬,并進(jìn)行實(shí)物樣本加工,結(jié)合簡易沖擊試驗(yàn)臺的實(shí)物沖擊試驗(yàn),對仿生中底緩震性能進(jìn)行評估。通過鞋墊式足底壓力系統(tǒng)對“足-鞋”界面參數(shù)進(jìn)行提取,完成中底緩震性能評估,研制出一種具有優(yōu)良緩震特性的運(yùn)動(dòng)鞋中底。本研究可為緩震中底的設(shè)計(jì)提供全新的設(shè)計(jì)思路和理論依據(jù)。通過外場實(shí)驗(yàn),結(jié)合高速攝像系統(tǒng)和足底壓力測試系統(tǒng)對鴕鳥足運(yùn)動(dòng)學(xué)數(shù)據(jù)進(jìn)行捕捉,測試發(fā)現(xiàn)鴕鳥奔跑過程觸地期足部豎直方向最大速度約為1.339m/s,為后續(xù)鴕鳥足墊緩沖性能有限元分析提供輸入和對照參數(shù)。使用核磁共振成像技術(shù)對鴕鳥足墊進(jìn)行切片掃描,通過Mimics對組織結(jié)構(gòu)進(jìn)行提取,通過Geomagic Studio進(jìn)行三維模型細(xì)化和組裝,完成鴕鳥足墊三維模型重構(gòu)。通過大體解剖觀察及宏觀測量技術(shù),對鴕鳥足墊內(nèi)部三條趾緩沖墊分布情況及尺寸進(jìn)行測量分析;通過生物力學(xué)相關(guān)實(shí)驗(yàn),對鴕鳥足墊參數(shù)進(jìn)行提取,包括硬度、彈性模量及密度,為有限元分析及仿生設(shè)計(jì)提供參數(shù)基礎(chǔ)。采用Abaqus軟件進(jìn)行足墊有限元模型建立及分析。通過靜態(tài)承壓模擬,對承載特性進(jìn)行分析,研究發(fā)現(xiàn),鴕鳥足墊具有優(yōu)良的承載性能。通過模態(tài)分析,對動(dòng)剛度及穩(wěn)定性進(jìn)行分析,研究發(fā)現(xiàn),鴕鳥足墊具有較強(qiáng)的動(dòng)剛度,并且振型模態(tài)主要以旋轉(zhuǎn)為主。通過動(dòng)態(tài)著地?cái)?shù)值模擬,對鴕鳥足墊模型緩沖特性進(jìn)行分析,測試指標(biāo)包括負(fù)加速度峰值及沖擊力峰值等,研究表明,鴕鳥足墊具有優(yōu)良的緩沖性能,能夠有效削弱地面沖擊,對足部骨骼肌肉系統(tǒng)起到重要的保護(hù)作用。使用手持式三維激光掃描儀進(jìn)行運(yùn)動(dòng)鞋鞋底外輪廓三維點(diǎn)云數(shù)據(jù)獲取。根據(jù)鴕鳥足墊的材料和結(jié)構(gòu)以及相互組裝關(guān)系,以鴕鳥足墊為仿生原型,進(jìn)行仿生運(yùn)動(dòng)鞋中底結(jié)構(gòu)和材料的耦合仿生設(shè)計(jì)。進(jìn)行仿生運(yùn)動(dòng)鞋中底沖擊工況數(shù)值模擬,完成實(shí)物加工,利用實(shí)驗(yàn)室自行研制的沖擊試驗(yàn)臺對運(yùn)動(dòng)鞋仿生中底及普通中底進(jìn)行沖擊分析,驗(yàn)證其優(yōu)良緩震性能。通過試驗(yàn)與數(shù)值模擬相互結(jié)合的方法,對運(yùn)動(dòng)鞋中底緩震特性進(jìn)行分析。研究表明,仿生鞋底有效削減沖擊過程的負(fù)加速度峰值及沖擊力峰值,起到優(yōu)良的吸能緩震作用。通過F-scan鞋墊式足底壓力測試系統(tǒng)對運(yùn)動(dòng)鞋仿生中底和普通中底的緩震性能進(jìn)行分析,主要測試區(qū)域?yàn)檫\(yùn)動(dòng)鞋中底的前掌區(qū)及后跟區(qū)。研究發(fā)現(xiàn),相比具有普通中底的運(yùn)動(dòng)鞋,穿著具有仿生中底的運(yùn)動(dòng)鞋可有效減小足底峰值壓強(qiáng)、均值壓強(qiáng)、峰值壓力、壓力-時(shí)間積分以及壓強(qiáng)-時(shí)間積分,起到優(yōu)良的緩震效果。據(jù)此得出,仿生運(yùn)動(dòng)鞋中底能夠有效緩解足部負(fù)擔(dān),增強(qiáng)足部舒適感,并降低運(yùn)動(dòng)損傷幾率。本研究將為高質(zhì)量緩震運(yùn)動(dòng)鞋中底的研制提供新思路。
[Abstract]:The ostrich foot cushioning pad inspired and affected by this excellent performance based on the ostrich foot pad as biological prototype, 3D laser scanning technology based on magnetic resonance imaging technology and reverse engineering technology, and combined with the principle of bionics, the ostrich foot pad is applied to the structure and material of the bionic sports shoes at the end of the design, the a new type of bionic sports shoes excellent cushioning midsole. Using finite element analysis software, numerical simulation of the impact of working conditions on the sole, and sample processing, the real impact test with simple impact test, to evaluate the bionic bottom cushioning. Through the interface parameters of foot and shoes are the insole plantar pressure system extraction, complete bottom cushioning performance evaluation, developed a kind of sports shoes with excellent cushioning properties in the bottom. This study can provide for the design of bottom corrosion epicenter Design ideas and new theoretical basis. Through field experiments, combined with high speed camera system and plantar pressure test system to capture the kinematic data of the ostrich, ostrich run test showed that the maximum speed vertical foot touchdown period is about 1.339m/s, provide input and control parameters for the finite element analysis of cushioning pad. Subsequent ostrich foot of ostrich foot pad slice scanning using magnetic resonance imaging technology, based on the organization structure of Mimics extraction, 3D model refinement and assembled by Geomagic Studio, 3D model reconstruction of ostrich foot pad. The gross anatomy observation and macro measurement technology of ostrich foot pad inside the three toe pad distribution and size were measured by analysis; biomechanical experiment, parameters of the ostrich foot pad was extracted, including hardness, elastic modulus and density for finite element analysis and Provide parameters based bionic design. Establishment and analysis of foot finite element model by Abaqus software. Through the simulation of static pressure, bearing characteristics analysis, the study found that the ostrich foot pad bearing has excellent performance. Through modal analysis, the dynamic stiffness and stability analysis, the study found that the ostrich foot pad has strong dynamic stiffness and modal to rotation. Through a dynamic numerical simulation model of the ostrich foot pad cushioning properties were analyzed, including test index of negative peak acceleration and peak impact force. The research shows that the ostrich foot pad has excellent cushioning properties, can effectively reduce the ground impact, protective effect important on the foot of the musculoskeletal system. Using a hand-held 3D laser scanner point cloud data for sports shoes contour acquisition. According to the material and structure of ostrich foot pad to The assembly and mutual relations, with the ostrich foot pad as the bionic prototype, coupling bionic design of bionic sports shoes at the end of material and structure. Numerical simulation of bottom impact conditions for bionic sports shoes, to complete the material processing, impact test rig developed by using laboratory to analyze the impact of sports shoes in the bottom and bottom in common bionic. Verify the excellent cushioning performance. Through the combination of experiment and numerical simulation, the shoe bottom cushioning characteristics were analyzed. The results show that the negative peak acceleration and peak impact force for effectively reducing the impact process of bionic sole, has excellent energy absorption cushioning effect. And to analyze the cushioning performance of ordinary in the bottom of the shoe bottom bionic through F-scan insole plantar pressure test system, the main test area for the forefoot area and the heel area of sports shoes at the end of the study found that, compared with the ordinary in the bottom Sports shoes, wearing sports shoes with bionic midsole can effectively reduce plantar peak pressure, mean pressure, peak pressure, pressure time integral and pressure time integral, the cushioning effect is good. Concludes that the bionic sports shoes at the end of the foot can effectively alleviate the burden, enhance foot comfort and reduce movement the probability of injury. This study will provide new ideas for the development of high quality corrosion in the bottom of the shock of sports shoes.

【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TS943.74;Q811

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