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- The damage of welded specimens is measured in the strain-controlled LCF experiment of titanium alloy (TC4) which is often used in aero-engine and the damage evolution model is verified. 用控制应变的疲劳试验,对航空发动机中常用的TC4钛合金焊接试件进行了疲劳损伤的测量,验证了损伤演变模型。
- damage evolution model 损伤演化模型
- AE accumulative relative energy is related to the damage evolution of C/SiC composites closely. 声发射累积相对能量和C/SiC复合材料的损伤演化有较好的相关性。
- Example analysis demonstrated that the evolution model possess bitemporal characteristic. 算例分析显示,相继故障演变模型具有双时态的特点。
- Taking the Modern Catchment Geomorphic Evolution Model (MCGEM) for example, the model complexity is evaluated by this method. 最后采用本文提出的定量统计方法,对小流域地貌演化模型的复杂性进行了评价。
- The evolution model was found to be different between F/10 and G/11 xylanase, this attributes to their different three-dimension structures. 而G/11家族木聚糖酶在进化时间则相对较近,多在真菌中出现,功能分化较为完全,很少含有糖苷酶的属性,分解产物中低聚寡糖成分较多。
- The creep damage evolution curve from SPCT with three stages is similar tothat of creep strain, being consist of decelerating, constant rate and accelerating stages. 同时证明了作者所建立的有限元模型的正确性。 (3)试样损伤曲线变化规律与蠕变应变的变化规律相类似,损伤曲线具有减速、恒速和加速的三阶段。
- The matrix damage evolution behavior and the effect of matrix micro-cracks on the dynamic characteristics of composite stiffened delaminated plates are studied. 由于该准则考虑了载荷作用周期数的影响,从而能够更合理地分析周期性动载荷作用下基体微裂纹损伤演化规律。
- In order to know the whole information on evolution of region, considering the nonlinear action in regional PREE system, evolution model of regional PREE system is set up. 摘要为了整体把握区域发展的演化特征,建立了区域PREE系统整体演化模型;
- The meso-scope damage dynamics and damage evolution had been applied to probe the evolution process induced catastrophe in the earthquake activity.It is a new method. 摘要从细观损伤力学及损伤演化的角度探索地震活动中的演化诱致发震是一种全新的方法。
- Acoustic emission (AE) characteristics of a sandstone sample in fatigue failure process were analyzed by AE testing and its fatigue damage evolution rule was studied. 摘要通过砂岩试件疲劳破坏的声发射实验,分析了砂岩疲劳破坏过程的声发射特性,研究了岩石的疲劳损伤演化规律。
- A series of uniaxial ratchet and creep experiments were performed for SS316L,a creep evolution model was established for this material to predict the creep deformation. 针对316L不锈钢进行了大量的单轴棘轮和蠕变试验,建立了描述该材料单轴短时蠕变演化模型。
- According to basic damage principle, the shear damage variable of rock and the pull damage variable of grout body are defined, and the damage evolution equation is suggested. 摘要根据损伤理论的基本原理,分别定义了岩体剪切损伤变量和受拉浆体材料的损伤变量,确定了各自相应的损伤演化方程;
- The failure mode of frozen silt with layered structures is mainly controlled by segregating ice.And the damage evolution is remarkably different with different loading directions. 层状构造冻土的破坏主要受控于分凝冰,不同加载方向下层状构造冻土的损伤演化过程存在显著差异。
- In the light of the dynamical analysis of microcrack coalescence, this paperpresents a statistical fractal modeI to describe the damage evolution of spailation. 摘要 通过对微裂纹连接的动力学分析,提出了描述层裂损伤演化的统计分形模型。
- Finally, the damage evolution rule of concrete due to triaxial compressive loading history is summarized, and the problems that should be solved in the future are presented. 然后,对混凝土经历各种三轴受压荷载历史后损伤的演化规律进行了深入研究,幷提出进一步研究应重点解决的问题。
- The damage evolution process is similar to percolation, and the unusual behavior of some properties at fracture or fragmentation is often related to certain scaling relations. 损伤演化过程与逾渗现象极为相似,临近断裂和破碎时,某些物理量所表现出来的异常行为往往满足一定的标度关系。
- We calculate and discuss the probability to detect FGS using the chemical evolution model of Galactic halo posed by Tsujimoto et al (TSY 99) under the assumption that the first generation star has Miller Scalo form of initial mass function. 为解释这一观察现象 ;将以Tsuiimoto等人提出的银晕的化学演化模型为基础 ;假设形成第一代恒星的初始质量函数具有Miller Scalo的形式 ;从理论上预言和讨论探测第一代恒星的可能性 .
- The damage zone development and damage evolution ahead of a crack tip in an dutile metal specimen are studied from the viewpoint of continuum damage mechanics. 从连续介质损伤力学的基本理论出发,研究了金属试件中裂纹尖端损伤区的发展和区内损伤的演变。
- This paper emphatically introduced the heteroeneous accumulation model for formation of the Earth by reviewing the solar nebula evolution models. 本文从太阳星云演变模式八手,着重介绍地球的非均一堆积起源模式。