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损伤板
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  “损伤板”译为未确定词的双语例句
     The residual strength of damaged composite laminates and their repaired structures are calculated, and the influence of the repair parameters is discussed by the finite element and program stated above.
     3.用所建立的二维有限元模型和编写的有限元程序计算损伤板及其修补结构的剩余强度,并分析了修补参数对修补效果的影响;
短句来源
     For orthotropic damage condition, two new parameter kx and ky are introduced two represent the stiffness reduction of x and y direction of damaged FE element respectively.
     对于各向异性损伤板情况,采用Kachanov理论,引入了x和y两个方向的弹性损伤系数,并将由于损伤而成为的各向异性材料的力学参数通过损伤系数与原各向同性材料参数相关联。
短句来源
     Based on the Hypothesis modified,the symmetrical stiffness matrixs have been obtained both in the principal directions and in any arbitrary coordinate sys- tem when the anisotropie damage of plate is considered.
     根据修正的假设导出各向异性损伤板在主轴方向和任意笛卡尔坐标系统下具有对称性的弹性刚度矩阵。
短句来源
     The stress concentration factor (SCF) decreased with the increase of the width of plates when the hole diameter was definite.
     结果表明:在开孔尺寸一定的情况下,随着板宽的增大,开孔损伤板的应力集中因数减小;
短句来源
  相似匹配句对
     Damage Analysis of Aluminum Alloy Plate and Composite Laminate
     铝合金及复合材料开孔损伤分析
短句来源
     ADVANCE ON REPAIR OF GROWTH PLATE INJURY
     生长损伤修复的研究进展
短句来源
     Duodenal injuries
     十二指肠损伤
短句来源
     Severe lower limb injury
     严重的下肢损伤
短句来源
     Phosphate Treatment for EG Steel Sheet
     电镀锌的磷化
短句来源
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  damaged plate
Analytical expressions for effective stiffness of a damaged plate with distributed microcracks are derived for the first time.
      
After the damaged plate is removed, a portion of the soil will fall naturally, leaving a cavity behind the location of the removed plate.
      
Only after the grout between these complete liner rings and the existing pipe has set should an attempt be made to remove the damaged plate.
      
Some shipyards applied slot welds only on top of the stiffeners supporting the damaged plate.
      
The damaged plate exhibits highly inelastic behavior, and the stresses in some portions of shell plating exceed the material's yield stress.
      


A bending damage theory for concrete pavements is presented in this paper.The bending damage vaiables of concrete pavements β_(ij) aredefined as the ratios of the amounts of bending stiffness loss to the initial bending stiffness,and the nominal interior moment vector M_(ij) and a damage effeci ma- trix N(β_(ij)) are derived.In the paper,Sidoroff Hypothesis of elastic energy equivalence is modified and generalized to the bending damayeof thin plate. Based on the Hypothesis modified,the symmetrical stiffness...

A bending damage theory for concrete pavements is presented in this paper.The bending damage vaiables of concrete pavements β_(ij) aredefined as the ratios of the amounts of bending stiffness loss to the initial bending stiffness,and the nominal interior moment vector M_(ij) and a damage effeci ma- trix N(β_(ij)) are derived.In the paper,Sidoroff Hypothesis of elastic energy equivalence is modified and generalized to the bending damayeof thin plate. Based on the Hypothesis modified,the symmetrical stiffness matrixs have been obtained both in the principal directions and in any arbitrary coordinate sys- tem when the anisotropie damage of plate is considered.

本文针对混凝土道面板的弯曲特性提出弯曲损伤变量的概念,该损伤变量β_(11)定义为板的弯曲刚度总损失量与初弯曲刚度之比,由此导出名义内力矩和损伤影响量矩阵 Nβ(11)。并将 sidoroff 各向异性损伤理论的弹性余能密度等价假设修正推广到板的弯曲损伤问题。根据修正的假设导出各向异性损伤板在主轴方向和任意笛卡尔坐标系统下具有对称性的弹性刚度矩阵。

The paper has thoroughly studied on identifying damaged parameter problem of linear elastic plate. First, the damage identification problem is changed to identify resistant flexural stiffness.Then, an iterate process of identifying resistant flexural stiffness is formed. With the help of Green′s function and Fredholm integral, the relation between the increment of resistant flexural stiffness and the deflection of damaged plate has been found. The purpose of identifying the damaged parameter can be realized...

The paper has thoroughly studied on identifying damaged parameter problem of linear elastic plate. First, the damage identification problem is changed to identify resistant flexural stiffness.Then, an iterate process of identifying resistant flexural stiffness is formed. With the help of Green′s function and Fredholm integral, the relation between the increment of resistant flexural stiffness and the deflection of damaged plate has been found. The purpose of identifying the damaged parameter can be realized by using of the testing data of deflection at sensor buried area.

对线弹性含损伤板的损伤识别问题进行了较深入的理论研究。首先将损伤识别问题转化为对板的抗弯刚度的识别问题来考虑,在构造识别抗弯刚度的迭代过程中,采用格林函数法对抗弯刚度增量表示的近似偏微分方程进行变换,得到Fredholm 第一类积分,离散化后可建立抗弯刚度增量与板的挠度的关系,实现用传感器埋设点的挠度实测值对损伤物性参数识别的目的

We are the first in P. R. China to propose an intelligent system for detecting damage in composite structures. Our method takes into consideration recent developments in intelligent materials and structure and in wavelet analysis. In our method, we glue a pair of piezoelectric patches on composite laminated plate, one as actuator, and the other as sensor. By applying an electric field to the actuator piezoelectric patch, we excite mechanical vibrations and we collect the dynamic responses with the sensor piezoelectric...

We are the first in P. R. China to propose an intelligent system for detecting damage in composite structures. Our method takes into consideration recent developments in intelligent materials and structure and in wavelet analysis. In our method, we glue a pair of piezoelectric patches on composite laminated plate, one as actuator, and the other as sensor. By applying an electric field to the actuator piezoelectric patch, we excite mechanical vibrations and we collect the dynamic responses with the sensor piezoelectric patch. Section 2 discusses how to extract with the wavelet transform the feature of energy distribution of the plate with crack damage and it can be used to identify the very small difference in dynamic response signal between the damaged plate and the original undamaged plate. Numerical results in section 2 show that very small crack propagation can be detected by our method. The proposal of our method will be followed by systematic experiments.

对一含裂纹的复合材料层合板,通过粘贴在其表面一对压电片(一片作为传感器,一片作为激振器)构造了结构动力响应的激励和检测系统。通过完好板和损伤板的振动模态参数和时域响应信号比较,探讨了识别复合材料结构损伤的可行性。同时,利用小波包分析,基于动力响应信号各频率段的能量分布,提取结构损伤的特征量来表征结构损伤情况。结果表明,当用一个含有丰富频率成分的信号作为输入对系统进行激励时,可以较为准确地识别复合材料结构的裂纹损伤。

 
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