Effect of particle on thermal residual stress in aluminum matrix composite 颗粒对铝基复合材料热残余应力的影响
Study on interfacial thermal residual stress of single-fiber resin matrix composite materials 单纤维树脂基复合材料界面热残余应力研究
An Approximated Method for Calculating Residual Mass Matrix and Residual Stiffness Matrix 剩余质量阵和剩余刚度阵的近似计算方法
The results show that the residual stress of Cu matrix and Fe article near interface is increased with the increase of the Fe particle density. 结果表明,颗粒密度越大则界面附近CU基体和铁颗粒的残余应力越大,并且在X方向FE颗粒处于压缩,CU基体主要处于拉伸状态;
It is found that residual stresses of Cu matrix and Fe particle near the interface are very large. 研究发现,Cu基体和Fe颗粒界面附近两相的残余应力值很大;
The results show that the dislocation density, residual tensile stress in the matrix and yield strength of the quenched composite are larger than those of the annealed composite. 结果表明:淬火后复合材料基体的位错密度、内应力、及材料的有效屈服强度较高;
Based on statistical power of detecting QTL, the model with GM2 for the mean vector and "Damped" exponential model for residual covariance matrix was determined as optimal one and two QTL were detected in linkage group 3, with greater statistical power than other combinations. 其结果GM2和衰减指数模型组合被确定为用来检测水稻第3个连锁群控制叶龄动态变化QTL的优化模型。
Super-frame structure with 2 base frames and 4 interpolate frames is used, the LPC coefficients of interpolate frames is quantized with 4 stages residual matrix quantization based on optimal 1-order linear prediction. 插值帧的线性预测(LPC)参数采用基于闭环最优一阶线性预测的4阶段残差矩阵量化;
In this paper an overview of the classification, formation and effect of residual stress of polymer matrix composite laminates is presented. 本文综述了聚合物基复合材料残余应力的分类、形成原因和层间残余应力对复合材料性能的影响。
We choose an optimal model for functional mapping via comparing various combinations of submodels for mean vectors of QTL genotypes and residual covariance matrix according to statistical power of detecting QTL. 根据QTL的统计检测效率,通过比较关于QTL基因型的期望均值向量和剩余误差的协方差矩阵的子模型的不同组合,来筛选优化的功能定位模型。
This paper presents the design scheme of fault detection filter ( FDF) considering parameters disturbance, which inducts residual weight matrix and realizes disturbance de-coupled with model uncertainty by using eigenstructure assignment. 该文给出一种考虑系统参数变化的观测器设计方法,它将故障残差引入加权矩阵。
The rank of the absorbance matrix can be calculated by comparing the Square sum of the residual matrix with the noise level. The study of samples of standard and synthetic gray system indicated that the principal component number calculated by this methed was consistent with the theoretical value. 吸光度矩阵的主成分数根据残余矩阵的残差平方和与噪声水平相比较而确定,对标准样品及模拟灰色体系样品的研究表明该法确定的主成分数与理论值一致。
The second one is the preconditioning subspace iteration method which uses a preconditioning matrix to impact the residual matrix obtained from the iteration procedure, so the distribution of eigenvalues is improved. 第二个改进算法是对每次迭代所得的残余矩阵直接进行预处理以改善矩阵特征值的分布。
The tangential residual stress near interface in matrix can restrain the crack propagation in matrix. 基体内近界面残余切向应力具有抑制裂纹在基体中扩展的趋势。
The subspace base vector matrix consists of the modified lower frequency mode matrix ( ineluding rigid body modes) and the modified residual flexibility matrix of neglected higher-frequency modes. 子空间基向量矩阵是由修正的低阶模态矩阵(包括刚体模态)和修正的被略去的高阶模态的剩余柔度矩阵组成的。
On the basis of elastic mechanics theory, the micro residual stress expression of matrix around fiber in metal matrix composites is deduced. 根据弹性力学理论建立了纤维增强金属基复合材料中纤维周围基体中的残余热应力模型。
In this paper, the additive mass technique is also proposed for correcting the truncation error of higher order modes without using the residual compliance matrix. 本文还提出了一种附加质量法来修正高阶模态的截尾误差而不采用剩余柔度矩阵,从而使本法能简易地获得高精度。
Variation of cure residual stress and curvature of resin matrix composite laminates 粘弹性基体复合材料层合板的固化残余应力和曲率变化
The TiN Vacuum Sputtering process of high speed steel tools was investigated by means of three electrodes reaction sputtering TiN instrument. The rules governing the variation of thickness of TiN Coating residual stress, matrix hardness with the coating time are studied. 本文借助三极反应溅射TiN炉,研究了高速钢刀具进行真空溅射TiN时,其TiN沉积层厚度、残余应力、基体硬度等特性随不同沉积时间的变化规律;
A modified eigenvalue algorithm using residual matrix with Lanczos method 利用余量矩阵修正近似特征值的Lanczos方法
Modeling time-dependent expected mean vectors of QTL genotypes and the structure of the within-subject residual covariance matrix are the essence for functional mapping QTL of dynamic traits. 拟合与时间相关的QTL基因型的期望均值向量和剩余误差的协方差矩阵是动态性状功能定位的核心内容。
The residual stresses in the alumina matrix and on the mullite particles as well as their effect on crack growth were analyzed by modelling. 通过模型分析了氧化铝基体和莫来石颗粒的应力状态及其对裂纹扩展的影响。
Thermal residual stress in metal matrix composites and its influence on the micro-mechanical behavior 金属基复合材料中的热残余应变场及其对材料细观行为的影响
The modified lower-frequency mode matrix is used to define the dynamic displacements, and the modified residual flexibility matrix is used to define the modified static displacement terms. 修正的低阶模态矩阵定义动态位移,修正的剩余柔度矩阵定义静态位移的修正项。
The purpose of pre-processing process was to get the set of feature point pair, least squares method was to estimate the parameters of the model, and the residual error matrix can be obtained through the estimated parameters. 在使用投影变换模型时,通过预处理提取特征点对集合,使用最小二乘法求解模型参数,并利用模型参数获得残差矩阵。
The result show that new diamond search algorithm can overcome the shortage of traditional three step search which make the motion estimation trapped into local optimism, can reduce the power of residual matrix and improve the peak of ratio signal and noisy. 2. 实验结果表明新菱形搜索算法即克服了传统的三步搜索算法陷入局部最优的缺陷,而且能够有效的降低残差矩阵的能量,提高峰值信噪比。
Partial parameters of the model and the residual error matrix all contain the intrinsic features of printer. Both the classification of the selected parameters and comparison of the residual error matrix can help us link a document to a printer. 模型的部分参数和模型的残差矩阵中均包含了打印机的固有特征,通过对所选模型参数的分类和对残差矩阵进行分析比对,最终实现文档的打印机来源认证。
The strengthening effects mainly took place in the matrix. The stress strengthening refers to the high level compressive residual stresses introduced to the matrix in the deformation layer. 喷丸强化作用主要发生在基体中,残余应力强化在于,喷丸在表层复合材料的基体中产生高水平残余压应力。
In composite, the thermal residual stress in the matrix is tensile stress, and that in the particle is contract stress. 在复合材料中,基体中存在拉应力,颗粒中存在压应力。
The residual matrix tensile stress increases while the fiber residual compressive stress decreases with the increase of fiber volume fraction. The changing level of stress is much bigger in matrix than in fiber. 随着纤维体积分数的增加,基体中的残余拉应力逐渐增加,纤维中的残余压应力逐渐下降,基体中应力变化程度小于纤维中应力变化程度。