以下为句子列表：
英文: A structured clay in this model is regarded as an assembly of lumps of different sizes, and it is assumed that the total deformation consists of 3 parts, i.e. elastic deformation of lumps, plastic deformation due to sliding between lumps and irrecoverable
中文: 这一模型把变形过程中的结构性土看作不同大小土块的集合体，总的变形将由土块的弹性变形、土块之间滑动引起的塑性变形和土块破碎引起的损伤变形三部分组成。
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英文: A void growth equation is derived for elastic-plastic deformation process by means of representative volume element (RVE).
中文: 摘要采用体胞模型的分析方法推导了材料在弹塑性变形阶段的孔洞增长方程。
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英文: As the material is deformed beyond the strain that elastic deformation persists, the stress is no longer proportional to strain, and permanent, nonrecoverable, or plastic deformation occurs.
中文: 当材料的形变超出弹性形变发生的范围，其应力将不再与应变成正比，永久的、不可回复的形变发生，即为塑性形变。
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英文: Based on the theoretical contact mechanics, the numerical simulations demonstrated that the axial stiffness during compression was sensitive to both the amount of plastic deformation and the interparticle friction occurring at the contacts within the asse
中文: 研究发现：弹塑性球颗粒系统在加载时其轴向刚度对颗粒间产生的塑性变形量及颗粒间的摩擦均很敏感。
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英文: Depending on different natures of materials to be conveyed, the pipe inner surface can be lined with a metal either the same as or other than the pipe base metal by means of the plastic deformation complex technique so as to meet the following requirement
中文: 根据输送物料的性质，采用塑性变形复合方法在管道内壁镶衬异种或同种金属管，可以实现以下目的：①增强管道内表面的耐腐蚀性和耐磨性；②降低摩擦系数，减小物料的输送阻力；③便于管道的加工、安装和维修。
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