本文選題：武術(shù)跳躍動(dòng)作 + 落地速度�。� 參考：《計(jì)算機(jī)仿真》2017年08期

【摘要】：武術(shù)中跳躍動(dòng)作的落地速度會(huì)嚴(yán)重影響著地穩(wěn)定性。對(duì)武術(shù)中跳躍動(dòng)作落地穩(wěn)定性的校正,需要通過(guò)腿部肌肉收縮產(chǎn)生應(yīng)力的最大位移,得到落地瞬間的最大應(yīng)力,完成對(duì)落地穩(wěn)定性的分析。傳統(tǒng)方法通過(guò)跳躍過(guò)程中的應(yīng)力應(yīng)變大小及集中部位得到應(yīng)力分布,但不能得到最大應(yīng)力具體數(shù)值,導(dǎo)致對(duì)落地穩(wěn)定性的校正精度低。提出基于有限元分析的武術(shù)跳躍動(dòng)作落地速度對(duì)著地穩(wěn)定性校正模型。以髖、膝、踝關(guān)節(jié)中心為作用點(diǎn)加載200N的垂直荷載,改變起跳瞬間的垂直速度,得到人體轉(zhuǎn)動(dòng)角速度下,計(jì)算出垂直載荷下的膝關(guān)節(jié)和踝關(guān)節(jié)矩處的應(yīng)力值,得到腿部肌肉收縮產(chǎn)生的縱向應(yīng)力最大位移,得到落地瞬間的水平速度,由此完成對(duì)武術(shù)跳躍動(dòng)作落地速度對(duì)著地穩(wěn)定性的影響分析。仿真結(jié)果表明,所提模型對(duì)落地穩(wěn)定性的影響分析精度較高,且魯棒性較強(qiáng)。
[Abstract]:The landing speed of jumping in martial arts will seriously affect the stability of the ground. In order to correct the stability of jumping movement in Wushu, it is necessary to obtain the maximum stress at the moment of landing by the maximum displacement of the stress produced by the contraction of the leg muscle, and to complete the analysis of the stability of the landing. The traditional method can obtain the stress distribution by the magnitude and concentration of stress and strain in the jumping process, but it can not get the specific value of the maximum stress, which leads to the low accuracy of the correction of the stability of the landing. Based on finite element analysis (FEM), a correction model of landing velocity of Wushu jumping action to ground stability is proposed. The vertical load of 200 N is loaded on the center of hip, knee and ankle joint. The vertical velocity of the take-off moment is changed, and the stress value of knee joint and ankle joint moment under vertical load is calculated under the rotation angular velocity of human body. The maximum displacement of longitudinal stress caused by leg muscle contraction was obtained, and the horizontal velocity of the moment of landing was obtained, and the effect of landing speed on the stability of landing was analyzed. The simulation results show that the influence of the proposed model on the stability of the ground is highly accurate and robust.
【作者單位】： 鄭州工業(yè)應(yīng)用技術(shù)學(xué)院;
【分類號(hào)】：G852;TP391.9
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本文編號(hào)：1974335