基于广义粒子动力学的巷道围岩弹塑性分析
发布时间：2019-06-05 10:13
【摘要】：提出了广义粒子动力学数值分析方法,该方法是一种无网格数值分析方法,可以考虑关联塑性流动法则和非关联塑性流动法则对岩石材料塑性变形的影响。将广义粒子动力学数值分析方法应用于巷道围岩的弹塑性分析,确定了巷道围岩的应力场、位移场和塑性区。该数值模拟结果与有限元结果吻合较好,表明将考虑岩石材料剪胀特性的弹塑性本构理论引入到广义粒子动力学数值分析方法,不失为模拟岩石类材料弹塑性破坏的一种有效数值手段,研究结果为更好地理解岩石材料的屈服破坏过程提供重要的参考。
[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.
【作者单位】： 重庆大学土木工程学院;解放军理工大学国防工程学院;
【基金】：国家重点基础研究发展计划(“973”计划)项目(2014CB046903) 国家自然科学基金项目(51325903,51279218) 重庆市自然科学基金院士专项项目(cstc2013jcyjys30002)
【分类号】：TD322
，
本文编号：2493453
[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.
【作者单位】： 重庆大学土木工程学院;解放军理工大学国防工程学院;
【基金】：国家重点基础研究发展计划(“973”计划)项目(2014CB046903) 国家自然科学基金项目(51325903,51279218) 重庆市自然科学基金院士专项项目(cstc2013jcyjys30002)
【分类号】：TD322
，
本文编号：2493453
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