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 拉伸损伤
 tensile damage
 Acoustic Emission Character of Tensile Damage on Three-Dimensional Braided C/SiC Composite 三维编织C/SiC复合材料拉伸损伤演化 短句来源 FINITE ELEMENT NUMERICAL SIMULATION OF TENSILE DAMAGE PROPAGATION IN UHMWPE/HDPE LAMINATED COMPOSITES UHM WPE/HDPE层合板拉伸损伤扩展的有限元数值模拟 短句来源 In this paper, based on the assumptions of pure bending damage of beams, the elementary equations on bending damage are developed. Similar to the tensile damage variable defined as reduction of loading area by L.M. Kachanov,the bending damage variable is defined as reduction of moment of inertia. 在梁的纯弯曲损伤基本假设条件下，导出了弯曲损伤的基本方程，与Kachanov的材料刚度劣化（受载横截面积减小）定义拉伸损伤变虽类似，以梁的弯曲刚度劣化（惯性矩减小）定义弯曲损伤变量，从而建立了与Kachanov拉伸损伤模型相类似的梁的各向同性弯曲损伤模型。 短句来源 The model includes two parts: tensile damage described by TCK model and shear failure by RHT model. 模型分成两部分考虑:拉伸损伤用TCK模型描述,剪切部分则采用RHT模型。 短句来源 In this paper,based on the basic assumptions of pure bending damage of beams,the elementary equations are drived, in which the definition of bending damage variable is defined by reduction of moment of inertia similar to that of tensile damage variable defined by reduction of loading area,a simple bending damage model is proposed similar to kachanov's tensile damage model. 本文在梁的纯弯曲损伤基本假设条件下，导出了弯曲损伤的基本方程，与Kachanov的材料刚度劣化（受载横截面积减小）定义拉伸损伤变量类似，以梁的弯曲刚度劣化（惯性矩减小）定义弯曲损伤变量，从而建立了与Kachanov拉伸损伤模型相类似的梁的各向同性弯曲损伤模型。 短句来源 更多
 tension damage
 Study of the Relation Between the Simple Tension Damage Factor D1c and Pure Shear Damage Factor 单向拉伸损伤因子D_(1c)与纯剪切损伤因子D_(2c)之间关系的探讨 短句来源 Mesoscopic elements tension damage is the main reason of shaping macro-cracks. "Aggregate drawing phenomenon" and "crack surface bridge phenomenon" is observed. 认为混凝土细观单元的拉伸损伤是最后形成宏观裂纹的主要原因，观察到“骨料拔出现象”和“裂缝面桥现象”等实际混凝土实验中常发生的现象。 短句来源 An elastoplastic anisotropic damage numerical model for rock is established by adopting Mohr-Coulomb criterion as the shearing yield condition,ultimate strain as the shearing damage criterion,and maximal tensile stress as the tension damage criterion. 采用莫尔-库仑准则作为岩体的剪切屈服条件、极限应变作为剪切损伤判据、最大拉应力作为拉伸损伤判据,建立了适合岩体的弹塑性各向异性损伤数值模型。 短句来源 In this paper, the variations in Barkhausen Noise has been measured in the tension process of 09CuPTi steel. The relationship between the Barkhausen Noise intensity and tension damage (i.e residual plastic strain) of the material was obtained. 本文实验研究了 0 9CuPTi(耐候钢 )在拉伸过程中巴克豪森噪声的变化 ,得到了巴克豪森噪声强度与拉伸损伤 (即残余塑性应变 )之间的关系。 短句来源 Fatigue damage is separated into two parts-static tension damage and cyclic damage. With the help of above analysis, a fatigue life estimation model is presented. 文中把疲劳损伤分为静拉伸损伤与循环损伤两部分,给出了损伤累积模型。 短句来源 更多
 “拉伸损伤”译为未确定词的双语例句
 INHOMOGENEITY ANALYSIS OF DAMAGE UNDER UNIAXIAL TENSION (I)——BASIC THEORY 岩样单轴拉伸损伤不均匀性分析——第一部分:基本理论 短句来源 Metal Damage Calculation and Measurement in Static Tension 金属材料静拉伸损伤计算及测量 短句来源 Research on damage constitutive characteristic while tensioning steel fiber reinforced concrete 钢纤维增强混凝土拉伸损伤本构特性 短句来源 Characterizing Damage Evolution of Three-dimensional Braided C/SiC Composite with AE Technology 声发射技术在三维编织C/SiC复合材料拉伸损伤分析中的应用 短句来源 The mean load transfer ratios between human and rhesus monkey knee joints are 8.6 and 1.3 for torsional and tensional injuries respectively. 人和猕猴膝关节发生扭转和拉伸损伤时的平均载荷传递比分别为8．6和1．3。 短句来源 更多

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 tensile damage
 Characterization of tensile damage progress in stitched CFRP laminates This study experimentally and numerically investigated the tensile damage progress in stitched laminates. The primary objective of this work was an examination of the complimentary roles of tensile damage and confinement reduction (or stress relaxation) on excavation response of "hard" rockmasses. Tensile damage and relaxation are examined with respect to structurally controlled or gravity driven failure modes as well as to strength controlled or stress driven rockmass damage and yield. An Investigation of the Effects of Layer Architecture on Tensile Damage Mechanisms in a Silicon Carbide (SiC) Fiber-Reinforced T 更多
 The application of the anisotropic damage mechanics to composites is explored in this paper. The outline of the damage tests for laminated composites and some measurement methods are briefly presented. The experimental results of three kinds of laminates under uni-axial tension show the damage energy release rate under uniaxial tension,Y2, based on Le-maitre's hypothesis of strain equivalence can be used to describs the mechanical state of damaged laminates. The damage evolution law can be represented by the... The application of the anisotropic damage mechanics to composites is explored in this paper. The outline of the damage tests for laminated composites and some measurement methods are briefly presented. The experimental results of three kinds of laminates under uni-axial tension show the damage energy release rate under uniaxial tension,Y2, based on Le-maitre's hypothesis of strain equivalence can be used to describs the mechanical state of damaged laminates. The damage evolution law can be represented by the simple function form of Y2=α(σ/σc)β, where α and β are coefficients which are inedpendent of the shape and size of the initial defect in laminates and can be experimentally determined. The critical damage energy release rate under uniaxial tension , Y2c, represents the capacity against the damage evolution in the laminates and it is independent of the shape and size of initial defects in laminates. 鉴于传统的断裂力学无法用于受损复合材料层板,本文探索了损伤力学在复合材料层板中的应用。文内介绍了复合材料层板损伤试验的概况及损伤测试方法,文中三种层板单向拉伸损伤试验结果的分析表明在单向拉伸载荷下基于J.Lemaitre应变等效性假设的损伤能释放率Y_2可用于描述受损复合材料层板的力学状态,它的演变方程通常可用Y_2=α(σ/σ_c)β的简单函数形式来描述。对特定的层板,α、β是与初始缺陷无关的常数,可由层板损伤试验确定。试验数据表明在单向拉伸载荷下,临界损伤能释放率对特定的层板也是与初始缺陷无关的常数,反应了材料抗损伤扩展的能力。所有这些结论都为进一步建立完整损伤破坏判据奠定了基础。 In this paper,the mechanism of fluid removal from fabrics by squeezing was investigated dynamically.Various factors which affected the results of squeezing were analysed In an all-round way.It was also found that the dynamic pressure of fluid,which increased with the process velocity of fabrics,formed the resistant moment of the rollers of mangle,and that the gradient of the seepage velocity of stretching of the fabrics processed.The methods for calculating some important parameters of fabrics (such as permeability... In this paper,the mechanism of fluid removal from fabrics by squeezing was investigated dynamically.Various factors which affected the results of squeezing were analysed In an all-round way.It was also found that the dynamic pressure of fluid,which increased with the process velocity of fabrics,formed the resistant moment of the rollers of mangle,and that the gradient of the seepage velocity of stretching of the fabrics processed.The methods for calculating some important parameters of fabrics (such as permeability coefficients),and some proposals for lowering the take-up and lessening the fabric damage were prasented as well. 作者将织物的轧液过程作为一个动力学过程来考虑,研究了其轧液机理,分析了各种因素对轧液效果的影响。并且发现流体动压力是构成轧辊阻力矩的主要成分,它随织物运行速度增大而增大。还阐明前孔区内流体的渗透速度梯度是引起织物拉伸变形的原因。文章还给出了如织物渗透系数等重要参数的计算方法,并提出了降低轧余率以及减少织物拉伸损伤的设想。 This paper dealt with tensile damage of the reinforced PTFE through detecting by acoustic emission technique and fracture analysis with scanning electron microscope. It was shown that the reinforcing component materials for the PTFE matrix had an obvious effect on their tensile properties. The microporosities formed by detaching interface between glass fibres and the matrix had little or no effect on the damage, while that formed by detaching interface between bronze powders and the matrix could initiate and... This paper dealt with tensile damage of the reinforced PTFE through detecting by acoustic emission technique and fracture analysis with scanning electron microscope. It was shown that the reinforcing component materials for the PTFE matrix had an obvious effect on their tensile properties. The microporosities formed by detaching interface between glass fibres and the matrix had little or no effect on the damage, while that formed by detaching interface between bronze powders and the matrix could initiate and develop microcracks. The embrittlement of the reinforced PTFE would be resulted from cracking of polystyrene itself as one of the reinforcing component materials, during elastic deformation. The variations of acoustic emission signals were corresponding relatively to the different damage forms in tensile processes. So a further study on the damage of the reinforced PTFE can be done by means of acoustic emission technique. 采用声发射技术监测填充聚四氟乙烯的拉伸损伤过程,结合扫描电镜进行断口分析。结果表明:填充剂的成分配比对拉伸性能有明显影响,其本质是拉伸损伤的规律不同。玻璃纤维与基体界面分离形成的微孔对损伤影响不大;青铜粉与基体界面分离形成的微孔则易于诱发裂纹,并促进裂纹扩展;聚苯乙烯在弹性变形阶段就可能断裂,导致材料脆化。不同的拉仲损伤产生的声发射信号规律不同。因此,可利用声发射技术对复合材料的损伤作更深入的研究。 << 更多相关文摘
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