Steel beam with web opening reinforced by induction heating

Liu, Yuan; Nishiyama, Minehiro; Tani, Masanori; Kurata, Masahiro; Iwata, Kaho

doi:10.1016/j.jcsr.2020.106399

Cited by 9 publications

(2 citation statements)

References 9 publications

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“…Previous earthquakes have shown that adjacent buildings are often damaged or collapsed due to collision under the action of earthquakes [1]. This phenomenon can be seen in many earthquake disasters at home and abroad [2][3][4]. The application of metal dampers in building structures can improve the energy dissipation capacity and seismic performance of buildings [5][6].…”

Section: Introductionmentioning

confidence: 99%

Study on Mechanical Properties of Honeycomb Regular Hexagon Damper

2024

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Traditional metal dampers have the advantages of easy processing, convenient production, and good mechanical properties. However, most of the traditional metal dampers are single design, and their application is limited by the size of the dampers. Based on the honeycomb metal damper, a honeycomb regular hexagon metal damper with a free connection is proposed in this paper. Firstly, the failure mechanism, hysteretic curve, skeleton curve, stiffness degradation curve, and energy dissipation curve of the single energy-dissipating supporting member and the triple two-row supporting member were obtained through the low-cycle reciprocating loading test. Then the R-O mechanical model was fitted to the skeleton curve obtained from the test. Then, three kinds of honeycomb regular hexagon dampers were modeled by ABAQUS finite element simulation software, and the finite element simulation results were compared with the test results. The results show that the energy dissipation support in this paper has a good bearing capacity and energy dissipation capacity, and the development trend of simulation results align with the experimental results. The energy dissipation capacity of the energy dissipation support can be improved, and the multi-section yield can be achieved by connecting multiple energy dissipation units.

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Section: Introductionmentioning

confidence: 99%

Study on Mechanical Properties of Honeycomb Regular Hexagon Damper

2024

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“…The induction heating equipments are being extensively used in many industrial and domestic fields [1][2][3]. The IH principles are useful in domestic cooking purposes as it has more advantages over the conventional methods [4][5]. Induction heating equipment also attenuates the injection of current harmonics with the help of interface filters [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Implementation of Boost PFC in the Induction Heating System for EMI–RFI Suppression

Raman

Baruah

Dey

et al. 2021

HighTech. Innov. J.

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The present work deals with the design and performance analysis of high frequency resonant inverter based Induction Heating (IH) System employing Boost Power Factor Correction (PFC) technique to overcome the problems due to EMI and RFI. Most of the existing techniques use passive filters for harmonics attenuation that fails to meet the present day requirement because of drawbacks like considerably high THD, poor dynamic performance, etc. This paper presents a new control approach for boost PFC based on inner and outer loops to eliminate the problems due to harmonics in the IH system. The equivalent circuit parameter model of the IH system has been used to analyze the presence of harmonics and the incorporation of boost PFC at the input of the system shows its elimination as per the stringent EMI-RFI regulations. Moreover, attention has been paid off to the design algorithm of the boost PFC and a detailed mathematical analysis has been done to outline an approach for its parameter selection. A comparative analysis of the IH system with and without the incorporation of the boost PFC has been done in terms of the THD in the input current waveform. The findings of the present work show that the incorporation of Boost PFC eliminates the harmonics in the IH system in a better manner than the existing techniques. Doi: 10.28991/HIJ-2021-02-02-05 Full Text: PDF

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Effects of openings on postbuckling behavior of large‐size composite C‐beam under bending‐shear coupling load

Wang,

Zhang,

et al. 2024

Polymer Composites

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Proper design and accurate mechanical assessment of composite C‐beam after opening are of great importance in structure engineering. This paper aims to experimentally and analytically investigate the postbuckling response of large‐size C‐beam with web opening under bending‐shear coupling load. New specimen with four different open shapes were designed and tested. Strain gauges and displacement measurements were applied to monitor its buckling behavior, strain field distribution and critical failure load. Four specimens with various openings were loaded until catastrophic failure occurred. Additionally, an analytical model was introduced to predict the residual strength of circular opening. The results indicate that while the presence of an opening significantly decreases the load carrying capacity, it has minimal effect on the bending stiffness. Compared with intact specimen, the initial delamination, buckling and ultimate strength of the circular opening decreases less than those of the rectangular opening. By altering the position of the rectangular opening, improvements can be made in terms of initial delamination resistance and buckling load; however, ultimate strength remains largely unaffected. Reinforcing the edge of an opening further reduces resistance to initial delamination but other two indicators are improved. Overall, from buckling to failure stages, post‐buckling bearing capacity after opening decreases by 40%. Moreover, the shear failure mode is observed during catastrophic failures. And the analysis method employed is relatively conservative.Highlights Ten large size composite C beams are conducted under coupling loads. Deformation, strain distribution and failure mode are presented. Influence of openings on postbuckling behavior of beam is analyzed. An analysis method is employed to predict the residual strength of beam. It could provide valuable insights for assisting in designing beam openings.

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Steel beam with web opening reinforced by induction heating

Cited by 9 publications

References 9 publications

Study on Mechanical Properties of Honeycomb Regular Hexagon Damper

Study on Mechanical Properties of Honeycomb Regular Hexagon Damper

Implementation of Boost PFC in the Induction Heating System for EMI–RFI Suppression

Effects of openings on postbuckling behavior of large‐size composite C‐beam under bending‐shear coupling load

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