【摘要】：提出了廣義粒子動力學(xué)數(shù)值分析方法,該方法是一種無網(wǎng)格數(shù)值分析方法,可以考慮關(guān)聯(lián)塑性流動法則和非關(guān)聯(lián)塑性流動法則對巖石材料塑性變形的影響。將廣義粒子動力學(xué)數(shù)值分析方法應(yīng)用于巷道圍巖的彈塑性分析,確定了巷道圍巖的應(yīng)力場、位移場和塑性區(qū)。該數(shù)值模擬結(jié)果與有限元結(jié)果吻合較好,表明將考慮巖石材料剪脹特性的彈塑性本構(gòu)理論引入到廣義粒子動力學(xué)數(shù)值分析方法,不失為模擬巖石類材料彈塑性破壞的一種有效數(shù)值手段,研究結(jié)果為更好地理解巖石材料的屈服破壞過程提供重要的參考。
[Abstract]:A generalized particle dynamics numerical analysis method is proposed. This method is a meshless numerical analysis method, which can consider the influence of correlated plastic flow law and uncorrelated plastic flow rule on plastic deformation of rock materials. The generalized particle dynamics numerical analysis method is applied to the elastic-plastic analysis of roadway surrounding rock, and the stress field, displacement field and plastic zone of roadway surrounding rock are determined. The numerical simulation results are in good agreement with the finite element results, which indicates that the elastic-plastic constitutive theory considering the shear and expansion characteristics of rock materials is introduced into the generalized particle dynamics numerical analysis method. It is an effective numerical method to simulate the elastic-plastic failure of rock materials, and the research results provide an important reference for better understanding the yield failure process of rock materials.
【作者單位】： 重慶大學(xué)土木工程學(xué)院;解放軍理工大學(xué)國防工程學(xué)院;
【基金】：國家重點基礎(chǔ)研究發(fā)展計劃(“973”計劃)項目(2014CB046903) 國家自然科學(xué)基金項目(51325903,51279218) 重慶市自然科學(xué)基金院士專項項目(cstc2013jcyjys30002)
【分類號】：TD322
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本文編號：2493453