二維磁流變液的動力學特性
發(fā)布時間:2018-10-26 15:49
【摘要】:采用朗之萬分子動力學,數(shù)值模擬研究了二維磁流變液系統(tǒng)的動力學特性.模擬結果表明,磁場會使系統(tǒng)出現(xiàn)鏈狀結構,且隨著磁場強度的增加,短鏈增長,束鏈出現(xiàn),與實驗結果一致;最大靜摩擦力隨著磁場強度的增加而減小,但隨著無序點釘扎強度的增加而增大.此外,隨著外加驅動力的提高,運動系統(tǒng)的鏈狀結構更加明顯,束鏈增多,表明粒子之間的關聯(lián)會隨著外加驅動力的增加而增強.點釘扎無序會破鏈狀結構,破壞程度隨著點釘扎強度的增加而增強.
[Abstract]:The dynamic characteristics of two-dimensional magneto-rheological fluid system were studied numerically by Langevin molecular dynamics. The simulation results show that the magnetic field will make the system appear chain structure, and with the increase of magnetic field intensity, the short chain will increase and the beam chain will appear, which is consistent with the experimental results. The maximum static friction force decreases with the increase of magnetic field intensity, but increases with the increase of pinning strength of disordered points. In addition, with the increase of the external driving force, the chain structure of the motion system is more obvious, and the bundle chain increases, which indicates that the correlation between particles will increase with the increase of the external driving force. The chain structure will be broken by point pinning disorder, and the damage degree will increase with the increase of pinning strength.
【作者單位】: 鄭州大學物理工程學院;
【基金】:河南省科技廳自然科學基金資助項目(112300410151) 河南省教育廳自然科學基金資助項目(12A140012;13A140658)
【分類號】:O37
[Abstract]:The dynamic characteristics of two-dimensional magneto-rheological fluid system were studied numerically by Langevin molecular dynamics. The simulation results show that the magnetic field will make the system appear chain structure, and with the increase of magnetic field intensity, the short chain will increase and the beam chain will appear, which is consistent with the experimental results. The maximum static friction force decreases with the increase of magnetic field intensity, but increases with the increase of pinning strength of disordered points. In addition, with the increase of the external driving force, the chain structure of the motion system is more obvious, and the bundle chain increases, which indicates that the correlation between particles will increase with the increase of the external driving force. The chain structure will be broken by point pinning disorder, and the damage degree will increase with the increase of pinning strength.
【作者單位】: 鄭州大學物理工程學院;
【基金】:河南省科技廳自然科學基金資助項目(112300410151) 河南省教育廳自然科學基金資助項目(12A140012;13A140658)
【分類號】:O37
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