Evaluation of Vibration Damping of Glass-Reinforced-Polymer-Reinforced Glulam Composite Beams

Naghipour, Morteza; Taheri‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬, Farid; Zou, Guang Ping

doi:10.1061/(asce)0733-9445(2005)131:7(1044)

Cited by 28 publications

(18 citation statements)

References 6 publications

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“…Therefore, it was decided to extract more information from the signals captured in the non-forced vibration tests, in order to evaluate other properties related to the damping characteristics of the plates. Using the Logarithmic Decrement Method [23,26], the damping ratio, z, was calculated through Equation (4) based on the decay, d, from the initial maximum amplitude to half of its value (Equation (3)). The results from this detailed dynamic analysis are summarized in Table 4, and plotted in Fig.…”

Section: Dynamic Propertiesmentioning

confidence: 99%

Detection of multiple low-energy impact damage in composite plates using Lamb wave techniques

Ochôa

Infante

Silva

et al. 2015

Composites Part B: Engineering

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Section: Dynamic Propertiesmentioning

confidence: 99%

Detection of multiple low-energy impact damage in composite plates using Lamb wave techniques

Ochôa

Infante

Silva

et al. 2015

Composites Part B: Engineering

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“…where is constant damping ratio, 0.02 for CSIPs and 0.05 for concrete, 27 is mass matrix multiplier, is stiffness matrix multiplier, and ! is structural frequency obtained from modal analysis.…”

Section: Time History Analysis Under Earthquakementioning

confidence: 99%

New thin shells made of composite structural insulated panels

Uddin

2014

Journal of Reinforced Plastics and Composites

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Thin shells made of a new material named composite structural insulated panels were presented in this paper. Traditional concrete thin shells have the advantages of beautiful geometrical appearances and efficient structural shapes, but many shortcomings including the labor intensive and time consuming limit their applications. Composite structural insulated panels, consisting of E-glass/polypropylene laminates as face sheets and expanded polystyrene foam as core, have the potential to remedy the drawbacks of traditional concrete thin shells because of their high strength-to-weight ratio, excellent thermomechanical properties, and superior corrosion resistance. The new composite structural insulated panels thin shells were investigated in this paper comparing with traditional concrete thin shells. The static analysis results show the maximum von-Mises stress of composite structural insulated panels thin shells is 31.67% smaller than that of concrete thin shells. And results of Eigen-value buckling analysis and geometrical nonlinear analysis demonstrate that the composite structural insulated panels thin shells can bear larger nonlinear buckling load excluding its self-weight than concrete thin shells. Moreover, by modal analysis and time history analysis it can be obtained that composite structural insulated panel thin shells have better dynamic performances as the maximum Von-Mises stress is 48.2% less than that of the concrete thin shell under earthquake load. In addition to the excellent bearing capacities the composite structural insulated panel thin shells have the advantages of light weight, easy construction, time saving, low cost, thermal insulation, corrosion resistance, and fire retardant. This research confirms that the composite structural insulated panel thin shells are applicable and competitive. Finally, the connection, supports, and construction steps of the composite structural insulated panel thin shell were studied.

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“…The damping ratio ε can be reasonably assumed as 2.5% (Naghipour et al 2005); The natural frequency ω is calculated as:…”

Section: Materials Properties Assumptionsmentioning

confidence: 99%

Applied Element Method Analysis of Porous GFRP Barrier Subjected to Blast

Asprone

Nanni

Salem³

et al. 2010

Advances in Structural Engineering

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Numerical analysis of highly dynamic phenomena represents a critical field of study and application for structural engineering as it addresses extreme loading conditions on buildings and the civil infrastructure. In fact, large deformations and material characteristics of elements and structures different from those exhibited under static loading conditions are important phenomena to be accounted for in numerical analysis. The present paper describes the results of detailed numerical analyses simulating blast tests conducted on a porous (i.e. discontinuous) glass fiber reinforced polymer (GFRP) barrier aimed at the conception, validation and deployment of a protection system for airport infrastructures against malicious disruptions. The numerical analyses herein presented were conducted employing the applied element method (AEM). This method adopts a discrete crack approach that allows auto cracking, separation and collision of different elements in a dynamic scheme, where fully nonlinear path-dependant constitutive material models are adopted. A comparison with experimental results is presented and the prediction capabilities of the software are demonstrated

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Evaluation of Vibration Damping of Glass-Reinforced-Polymer-Reinforced Glulam Composite Beams

Cited by 28 publications

References 6 publications

Detection of multiple low-energy impact damage in composite plates using Lamb wave techniques

Detection of multiple low-energy impact damage in composite plates using Lamb wave techniques

New thin shells made of composite structural insulated panels

Applied Element Method Analysis of Porous GFRP Barrier Subjected to Blast

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