Dynamic Parameter Identification of Secondary Mass Dampers Based on Full‐Scale Tests

Cho, Bong-Ho; Jo, Ji-Seong; Joo, Seok-Jun; Kim, Hong-Jin

doi:10.1111/j.1467-8667.2011.00740.x

Cited by 30 publications

(33 citation statements)

References 58 publications

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“…The TLCD not only reduces the deflections and accelerations at the top floors and provides better structural stability but the water in the tanks of the TLCD can also be used in fire fighting and as chilled water storage (Ghaemmaghami et al 2013). The TLCD system uses water in place of additional concrete or steel used in traditional tuned mass damper (TMD) systems (Cho et al 2012;Amini et al 2013). This substitution provides three different economic benefits: first, TLCD is less costly than traditional TMD; second, it reduces the structural maintenance requirements; third the effectiveness of the TLCD increases when the building become less stiff as a result of the concrete cracking during a dynamic event (seismic or wind) or wear and tear of non-structural elements over time.…”

Section: Structural Systemsmentioning

confidence: 99%

Sustainable Building Design

Wang

Adeli

2014

Journal of Civil Engineering and Management

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Abstract. Sustainable building design has become a wide and multidisciplinary research endeavor including mechanical, electrical, electronic, communication, acoustic, architectural, and structural engineering. It involves the participation of owners, contractors, suppliers and building users. There has been a lot of talk about sustainable buildings in the past few years. Most of the published research is concerned with saving energy and water and making the buildings more environmentally friendly by, say, reducing the carbon emissions. In this article, sustainable building design is reviewed from the viewpoint of structural engineering. Different strategies presented in the literature are summarized. Finally, the authors argue that the next big leap in sustainable building design should come from the integration of the smart structure technology including the use of hybrid and semi-active vibration controllers that can result in substantially lighter and more efficient structures.

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Section: Structural Systemsmentioning

confidence: 99%

Sustainable Building Design

Wang

Adeli

2014

Journal of Civil Engineering and Management

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“…The SSI method yields estimates of modal parameters obtained from singular value decomposition of the block Hankel matrix, which is composed of correlation matrices of responses (Peeters and Roeck, 1999). Because the recorded data are not transformed into one frequency domain and because the dynamic parameters are extracted from the state space equation obtained directly from the time series of the data, this method is often used in system identification when the input force is not known (Cho et al, 2012).…”

Section: Modal Characteristics Identification Results For Eight-vectomentioning

confidence: 99%

Evaluation of Ambient Vibration Test Method for Historic Wooden Buildings Based on the Rigid Diaphragm Assumption

Kim

Cho

2016

Journal of Asian Architecture and Building Engineering

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To retrofit historic wooden buildings to improve their seismic and wind resistance, the precise structural assessment to such loads is essential. However, little research has been done in Korea on the ambient vibration test (AVT) of historic wooden buildings for the collection of dynamic characteristics and the corresponding structural assessment. The reason for this is that, for wooden buildings, unlike reinforced concrete (RC) and steel buildings, a systematic in situ AVT method has not been established. In this paper, an in situ AVT method is presented for historic wooden buildings based on the assumption that rigid diaphragm action plays a role in the structural responses of wooden buildings. This assumption is reasonable when the roof and rafters restrain the rotation of columns, as do slabs in RC and steel buildings. The proposed method was employed in an evaluation of the dynamic characteristics of a small traditional wooden building to assess its applicability. The method was also applied to in situ AVT of eight historic wooden buildings that are designated as national treasures in Korea.

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“…x(t) and x(t) are the solutions of the differential equations in (5) and (6), respectively, with the initial condition…”

Section: Class Function If a Continuous Nonlinear System Is In The Formmentioning

confidence: 99%

A Gray-Box Neural Network-Based Model Identification and Fault Estimation Scheme for Nonlinear Dynamic Systems

Cen

Wei

Jiang

2013

Int. J. Neur. Syst.

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A novel gray-box neural network model (GBNNM), including multi-layer perception (MLP) neural network (NN) and integrators, is proposed for a model identification and fault estimation (MIFE) scheme. With the GBNNM, both the nonlinearity and dynamics of a class of nonlinear dynamic systems can be approximated. Unlike previous NN-based model identification methods, the GBNNM directly inherits system dynamics and separately models system nonlinearities. This model corresponds well with the object system and is easy to build. The GBNNM is embedded online as a normal model reference to obtain the quantitative residual between the object system output and the GBNNM output. This residual can accurately indicate the fault offset value, so it is suitable for differing fault severities. To further estimate the fault parameters (FPs), an improved extended state observer (ESO) using the same NNs (IESONN) from the GBNNM is proposed to avoid requiring the knowledge of ESO nonlinearity. Then, the proposed MIFE scheme is applied for reaction wheels (RW) in a satellite attitude control system (SACS). The scheme using the GBNNM is compared with other NNs in the same fault scenario, and several partial loss of effect (LOE) faults with different severities are considered to validate the effectiveness of the FP estimation and its superiority.

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Dynamic Parameter Identification of Secondary Mass Dampers Based on Full‐Scale Tests

Cited by 30 publications

References 58 publications

Sustainable Building Design

Sustainable Building Design

Evaluation of Ambient Vibration Test Method for Historic Wooden Buildings Based on the Rigid Diaphragm Assumption

A Gray-Box Neural Network-Based Model Identification and Fault Estimation Scheme for Nonlinear Dynamic Systems

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