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1)  cohesionless-frictional geomaterial
纯摩擦型岩土介质
1.
Integration algorithm of constitutive equation for cohesionless-frictional geomaterial and its application to ABAQUS;
纯摩擦型岩土介质本构积分算法及其在ABAQUS中开发应用
2)  Frictional ring
摩擦介质
3)  intrinsic friction medium
内摩擦介质
1.
Calculation of oblique penetration depth of projectiles into an intrinsic friction medium;
弹体在内摩擦介质中的斜侵彻深度计算
4)  geomaterials
岩土介质
1.
To simulate the strain localization in the failure process of geomaterials,a model with embedded localized softening bands incorporating into the idea of strong discontinuities is presented.
针对岩土介质结构在破坏过程中局部化变形的问题,结合位移不连续的思想,提出内嵌局部软化带模型来捕捉结构中的局部化带。
2.
Considering the Laplace operator of plastic strains in the double yield functionst,he control equations of the generalized gradient-dependent plasticity model are established to describe both the strain localization characteristics and the basic mechanical characteristics of geomaterials.
它有望在较全面地反映岩土介质基本力学性质的同时,也合理解释岩土介质的应变局部化现象。
5)  rock and soil media
岩土介质
1.
As a product of geological history, rock and soil media process their special compositions and fabric structures so that their engineering behavior is very complicated.
为研究岩土介质动、静力学参数与岩土介质物理组构参数三者的关系,文章结合工程岩土体勘察评价,对岩土介质进行了一系列物理力学测试和波动测试,取得了一定量的测试数据。
2.
The results show,in rock and soil media with thickness of dozens of meters and conductivity of some extent,the attenuation of peak values of NEMP can amount to more than an order an.
通过建立康普顿电流模型 ,采用 FDTD法 ,对地面核爆炸 SREMP数值分析的结果表明 ,厚度为几十米以上的具有一定导电性的岩土介质层 ,对于电磁脉冲峰值场强的衰减可达一个量级以上 ,且使脉冲上升沿变缓。
6)  geo-materials
岩土介质
1.
Recent development of strain localization of softening geo-materials;
软化岩土介质的应变局部化研究进展——意义·现状·应变梯度
2.
In order to explore the strength and deformation mechanism of the geo-materials, some researches on the deformation and failure process in meso-scope must be performed.
进一步探索岩土介质的强度与变形机理,就必然要深入分析其细观变形和破坏性态。
补充资料:摩擦学:滚动摩擦
滚动摩擦
两相互接触的物体有相对滚动或有相对滚动趋势时的摩擦。滚动摩擦的机理不同於滑动摩擦﹐它主要来源於滚动体在接触区域產生弹-塑性变形﹐在以接触点(或线)为中心的接触区内接触压力分布不对称﹐致使支承面的反力N 发生偏心﹐并產生摩擦力F (见图 滚动摩擦示意图 )。用表示法向反力N 到接触点的距离﹐根据力的平衡条件可得
        
        式中为滚动体半径﹔为滚动摩擦係数﹐它的量纲为长度﹐其值与接触面的材料﹑粗糙度﹑温度和湿度等因素有关。
  
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