Geometric Parameters for Finite Element Model Updating of Joints and Constraints

Mottershead, John E.; Friswell, Michael I.; Ng, Gary H. T.; Brandon, J. A.

doi:10.1006/mssp.1996.0012

Cited by 92 publications

(41 citation statements)

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“…(6) to (8) in order to estimate the three parameters of the joint. The identified joint parameters are given in Table 12.…”

Section: A Three Parameter Modelmentioning

confidence: 99%

Joint Stiffness Identification: a Three-Parameter Joint Model of Cantilever Beam

Ingole¹,

Chatterjee²

2017

IJAV

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In engineering applications, almost all structures are composed of substructures and parts that are joined together with a multitude of different connections (e.g., bolted, riveted, welded, etc.). It is known that the added flexibility introduced by the joint to a structure significantly affects its dynamic behavior. The need for accurate prediction of the dynamic characteristics of complex structures has led to extensive research on the identification of joint dynamic characteristics. In the present work, a structural joint have been modeled as a pair of translational and rotational springs and the frequency equation of the overall system has been developed using sub-structure synthesis. It is shown that by using the first few natural frequencies of the system, one can estimate the unknown stiffness parameters. The estimation procedure has been developed first for a two parameter joint model and then for a three parameter model in which cross coupling terms are also included. The validity of the proposed method is demonstrated numerically and experimentally.

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“…(6) to (8) in order to estimate the three parameters of the joint. The identified joint parameters are given in Table 12.…”

Section: A Three Parameter Modelmentioning

confidence: 99%

Joint Stiffness Identification: a Three-Parameter Joint Model of Cantilever Beam

Ingole¹,

Chatterjee²

2017

IJAV

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show abstract

“…al. [24] developed an approach to joint modeling which used geometric offsets to parameterize multiple joints in a structure. Rigid elements were used to connect nodes displaced by a geometric offset.…”

Section: Joint Modelingmentioning

confidence: 99%

Finite Element Model Updating Using Antiresonant Frequencies

Jones

Turcotte

2002

Journal of Sound and Vibration

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“…Generic element matrices giving rise to a choice of parameters that allow for changes in the structure of the mass and stiffness matrices by modifying the eigenvalues and eigenvectors of individual finite elements are introduced in [17]. The generic element formulation is applied to the problem of joint identification in [18] while in [19] a strategy is proposed for the parameterisation of a welded joint and a clamped end. Chu and Trethewey [20] uses an experiment-based finite element model for evaluating the effects of design changes.…”

Section: Introductionmentioning

confidence: 99%