本文選題：彎道行走 + 地面支反力�。� 參考：《生物醫(yī)學(xué)工程學(xué)雜志》2017年01期

【摘要】：通過地面支反力(GRF)求得的利用摩擦系數(shù)(UCOF)是預(yù)測(cè)行走滑跌可能性的一個(gè)有效方法。為了研究不同轉(zhuǎn)彎策略下的利用摩擦系數(shù),進(jìn)而預(yù)測(cè)其滑跌可能性,本研究選取了10名健康男性青年進(jìn)行直道行走與兩種轉(zhuǎn)彎策略(外側(cè)腳轉(zhuǎn)彎與內(nèi)側(cè)腳轉(zhuǎn)彎)下的60°、90°轉(zhuǎn)彎行走試驗(yàn),使用ATMI測(cè)力臺(tái)采集地面支反力數(shù)據(jù),進(jìn)而求出各行走條件下的利用摩擦系數(shù)。結(jié)果表明,各行走條件下的足-地間內(nèi)外剪切力差異較大;彎道行走的滑跌可能性顯著大于直道行走。對(duì)于內(nèi)側(cè)腳轉(zhuǎn)彎,轉(zhuǎn)彎角度對(duì)利用摩擦系數(shù)峰值沒有顯著影響。對(duì)于外側(cè)腳轉(zhuǎn)彎,推進(jìn)力隨轉(zhuǎn)彎角度的增大而減小,這使得60°轉(zhuǎn)彎時(shí)的利用摩擦系數(shù)峰值相較于90°轉(zhuǎn)彎明顯增大。這表明,彎道角度對(duì)內(nèi)側(cè)腳轉(zhuǎn)彎時(shí)的滑跌概率影響較小,而對(duì)外側(cè)腳轉(zhuǎn)彎影響較大,角度越大滑跌概率越小。
[Abstract]:The coefficient of friction (UCOF) obtained by the ground branch reaction force (GRF) is an effective method to predict the possibility of strike-slip. In order to study the use of friction coefficient under different turning strategies, and then predict the possibility of sliding, In this study, 10 healthy young men were selected to carry out 60 擄/ 90 擄turn walking test under straight walk and two turning strategies (lateral foot turn and inner foot turn), and ATMI force table was used to collect the data of ground branch reaction force. Then, the friction coefficient of each walking condition is obtained. The results show that there are great differences in the shear forces between the foot and the ground under different walking conditions, and the slip and fall probability of curve walking is significantly higher than that of straight track walking. For the inner foot turn, the turning angle has no significant effect on the peak value of the coefficient of friction. For the lateral foot turn, the propelling force decreases with the increase of the turning angle, which makes the peak value of the coefficient of friction at 60 擄turn significantly larger than that of the 90 擄turn. The results show that the angle of curve has little effect on the slip probability of the inner foot, but the bigger the angle is, the smaller the slip probability is.
【作者單位】： 天津科技大學(xué)機(jī)械工程學(xué)院;天津科技大學(xué)天津市輕工與食品工程機(jī)械裝備集成設(shè)計(jì)與在線監(jiān)控重點(diǎn)實(shí)驗(yàn)室;西北工業(yè)大學(xué)工業(yè)設(shè)計(jì)研究所;
【基金】：高等學(xué)校博士學(xué)科點(diǎn)專項(xiàng)科研基金資助項(xiàng)目(20131208110005)
【分類號(hào)】：O313.5;R318
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本文編號(hào)：2083126