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joint parameter identification
相关语句
  结合面参数识别
     Joint parameter identification is a key problem in the modeling of complex structures.
     结合面参数识别是复杂结构动力学建模的关键问题。
短句来源
  相似匹配句对
     Impact of Reflow Parameter on Solder Joint Reliability
     再流区工艺参数对焊接可靠性的影响
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     ON FRACTURE TOUGHNESS PARAMETER OF WELDING JOINT AT LOW TEMPERATURE
     焊接接头低温断裂参量的研究
短句来源
     Research on Identification of Interface Parameter of Two Joint's Planes
     平面结合面参数识别的研究
短句来源
     Identification Dynamic Parameter of Machine Tool Joint Surface
     机床结合面结构动态参数识别
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     On Joint Mortgage
     论共同抵押
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The finite element model of the semi-rigid connection between members of frame structures is established in this paper, and it is applied to the model of joint parameters identification. A method for identifying joint properties of structures is presented by combining the experimentally obtained incomplete frequency response functions (FRFs) with the substructure mathematical model, which is normally a finite element idealization excluding undetermined joint properties. A general method for...

The finite element model of the semi-rigid connection between members of frame structures is established in this paper, and it is applied to the model of joint parameters identification. A method for identifying joint properties of structures is presented by combining the experimentally obtained incomplete frequency response functions (FRFs) with the substructure mathematical model, which is normally a finite element idealization excluding undetermined joint properties. A general method for separating variable coefficient matrix is proposed using the submatrix approach. In the process, the trust -region algorithm is employed to solve the nonlinear least square problem. The accuracy and feasibility of the proposed method is demonstrated by an example. The result indicates that the proposed method is robust in the identification of the joint physical parameters.

构造了半刚性结构连接单元,并应用于结构连接参数识别的模型中。利用子结构法建立的组合结构有限元模型和不完备的组合结构的测试频响函数,导出了连接子结构参数识别方法。提出了基于子矩阵因子法求解变量系数矩阵的通用方法。并将参数识别归结为求解非线性最小二乘问题,应用信赖域法克服了最小二乘求解初值选取范围过小的问题。最后利用仿真算例对上述方法进行了验证,结果表明该方法可行且具有一定的实用性。

Joint parameter identification is a key problem in the modeling of complex structures. The behavior of joint may be random due to the random properties of preload and joint geometries, contact surface and its finish, etc . A method is presented to simulate the joint parameters as probabilistic variables. In this method the response surface based model updating method and probabilistic approaches are employed to identify the parameters. The study implies that joint...

Joint parameter identification is a key problem in the modeling of complex structures. The behavior of joint may be random due to the random properties of preload and joint geometries, contact surface and its finish, etc . A method is presented to simulate the joint parameters as probabilistic variables. In this method the response surface based model updating method and probabilistic approaches are employed to identify the parameters. The study implies that joint parameters of some structures have normal or nearly normal distributions, and a linear FE model with probabilistic variables could illustrate dynamic characteristics of joints.

结合面参数识别是复杂结构动力学建模的关键问题。由于连接结构的接触面的大小、摩擦系数 ,以及安装预应力等相关参数存在不确定性 ,本文提出把连接结构的接触刚度及接触阻尼作为随机分布参数处理 ,并使用基于响应面法的模型修正方法和分布代数方法进行识别 ,方法可行 ,便于实际工程应用。研究表明 ,连接结构参数具有正态分布或近似正态分布的特点 ;用线性有限元模型加上具有正态分布的接触刚度、接触阻尼模型可以描述真实结构的动态特性

 
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