柔度
- flexibility
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一般地定义了分子柔度矩阵F;
The molecular flexibility matrix F is generally defined .
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海洋平台对称K型管节点的局部柔度及其参数公式
Local Joint Flexibility And Its Parametric Formulas for Symmetric Tubular K Joints of Offshore Platforms
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基于BP神经网络与柔度变化的结构破损诊断
A Method for Structural Damage Detection Based on Back Propagation Neural Network and Flexibility Changes
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单试样三点卸载柔度法测定金属材料JR阻力曲线
Determination of J_R Resistance Curve of Metallic Materials by Single-Sample Three-Point Unload Compliance Method
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柔度方程在COD法测量疲劳裂纹长度中的应用
Application of Compliance Expressions for Measuring Fatigue Crack Length By COD Techniques
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山形切口劈裂试样的柔度标定及测定陶瓷材料的K(IC)值
Compliance calibration of Chevron notched cleave specimen and determination of k_ ( ic ) values in ceramic materials
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引入用实验得到的柔度矩阵,建立强迫振动状态方程及确定系统的M,K、C。
A state equation for forced vibration system is established by introducing experimental compliance matrix , and then M , K , C are determined .
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卸载柔度单试样法测定焊接接头COD阻力曲线
Determination of the COD Resistance Curve for Wilded Joints by Unloading Compliance Method with a Single Specimen
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用无量纲柔度法测定了重轨钢动态几何因子f(a/W)值。
The dynamic geometrical factor f ( a / W ) for heavy rail steel was measured with the method of dimensionless flexibility .
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提出了基于裂纹集中柔度模型和p型有限元方法的裂纹梁结构动力学特性和响应分析方法。
Then a new methodology based on the lumped crack model and the p-version of finite element method ( p-FEM ) is developed to analyze the vibration characteristics and dynamic response of cracked structures .
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非亏损振系的Ritz减缩及其动柔度阵的新算法
Ritz-Reduction for Non-defective Vibrating Systems and A New Algorithm to Dynamic Flexibility Matrix
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在此基础上,用柔度法测量了裂纹尖端张开位移(CTOD)试验用大尺寸SE(B)试样预制疲劳裂纹的长度。
On the basis of above investigation , fatigue crack length of bigger three-point specimen for CTOD test with compliance method were preformed .
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山形切口三点弯曲试样的SIF柔度标定及应用
Compliance Calibration and Application of SIF of Three Point Bending Specimens with Chevron - Notched
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PAROS给出的柔性铰链绕z轴的转动刚度(柔度)计算公式相比,提出了更为简洁、精确的转动刚度计算公式,使其有利于柔性铰链的设计和分析。
This will be propitious to the design and analysis of flexure hinges .
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研究了以卸载柔度原理为基础的单试样COD阻力曲线试验技术。
A single specimen COD resistance curve test technique based on unloading compliance method using IBM-PC Computer for data acquisition and processing is studied in this paper .
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依据柔度变化率法确定起裂点,获得动态起裂韧度JⅠD。
The time of crack initiation is determined by the compliance changing method , and corresponding dynamic crack initiation toughness J_ (ⅰ D ) is obtained .
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研究结果表明,裂纹柔度法与逐层钻孔法及X射线衍射法相比,具有更好的敏感性和精确度,可用于测定板类构件内部残余应力。
Experimental results show that the method is more sensitive and accurate than the incremental hole-drilling method and X-ray diffraction method , and suited for measuring interior residual stresses in engineering rolled plates .
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该值是由成对的12英寸X3英寸试样的柔度得来的。
Values were derived from the duplicate 12 X 3-in . specimen compliances .
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实际应用和ANSYS软件分析的结果表明了所推导的双轴椭圆柔性铰链的柔度计算公式是正确的,是可以用于实际双轴椭圆柔性铰链的设计计算的。
The practical application and the analysis result of FE software ANSYS show that the compliance equations for double-axis elliptical flexure hinges are correct and can be used in practical design .
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本项研究根据岛津液压伺服材料试验机和CT试样的特点,首次提出了基于通过测量反映加载点位移的试验机活塞位移的卸载柔度法来测量裂纹长度。
According to the characters of SHIMADZU electro hydraulic servo controlled fatigue testing machine and CT specimen , put forward a method based on compliance of stroke displacement which reflects the displacement of loading point at first time .
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通过柔度标定实验,证明按上述理论解的形式,可得实验柔度的最佳回归方程。从而推算出脆性材料断裂韧性K(IC)的表达式。
It is proved by compliance calibration test that the optimum regression equation for compliance values can be obtained according to the above theoretical solution , The K_ ( Ic ) expression is then derived .
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当弹性基础的挠曲刚度较小时,随着挠曲刚度的减小,弹性基础的竖向振动将发生显著的变化,动力柔度系数Cv的实部和虚部的绝对值均变大。
When the flexible rigidity is small , with the decrease of the flexible rigidity , the absolute value of real and imaginary part of the dynamic complicance efficient increases .
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在此基础上,采用模态柔度曲率的改变构建一种新的指标,称为模态柔度曲率差(MFC)。
Rather than using the change in modal flexibility , the change in curvature of modal flexibility is adopted and called the modal flexibility curvature ( MFC ) .
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在Taylor模型的假设下,首先推导了单个任意取向币形微裂纹在复杂应力状态下引起的柔度张量增量,给出了考虑微裂纹闭合与摩擦的统一表达式。
Based on the Taylor model , compliance tensor increment induced by single penny-shaped microcrack is derived under complex loadings , both the closure and frictional sliding effects of microcrack are considered .
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证明了杂交元柔度矩阵H非奇异的充分必要条件是假设应力模式线性无关;以及等价应力模式形成相同的杂交元。
Following two theorems are proved in this paper : ( 1 ) The linear independence of assumed stress modes is the necessary and sufficient condition for the nonsingular flexibility matrix H. ( 2 ) The equivalent assumed stress modes construct the same hybrid element stiffness matrix .
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证明了分子柔度F(ij)是相应内坐标Ri和Rj的固有常数,它表示分子在沿Rj方向的单位外力作用下达平衡时沿Ri方向的位移;
It is proved that the molecular flexibility f_ ( ij ), which represents the displacement along R_i when the molecule balances under the unit external force along R_j , is the natural constant of the corresponding internal coordinates R_i and R_j .
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利用Mori-Tanaka方法和广义自洽方法,我们研究了滑动界面柔度系数和微裂纹密度的关系。
By means of Mori-Tanaka method and generalized self-consistent method , we study the relation between the interfacial compliance and the crack density .
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其次,研究了PID控制器的广义柔度随控制器参数变化和无惯性环节情况下PID控制系统的频率特性,给出了磁浮轴承的刚度、阻尼与控制系统参数之间的关系。
Secondly , the broad sense flexible degree of the PID controller changing with its parameters and the frequency characteristic of the PID control system under the no inertia item are studied . And the relation between rigidity and damping of magnetic bearing system and its control parameters is gotten .
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文中给出了直接计算刚度矩阵的公式,作为柔度矩阵的逆阵,它是非病态的。不可约分块Hessenberg矩阵的逆阵
As the reverse matrix of the flexibility matrix it is not in ill condition . INVERSES OF THE IRREDUCIBLE BLOCK HESSENBERG MATRICES
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利用Hill条件和扰动场理论,建立了平面应力状态下复合材料有效柔度的平移性质的普适微分方程,所得方程与复合材料微结构形状和分布无关。
Based on the Hill 's condition and field fluctuation approach , a set of universal differential equations are derived for the shift property of the effective compliances of planar composites in plane stress state . The derived equations are independent of the distribution and the shape of the microstructures .