Spatiotemporal Distribution of Deformation Processes in Reinforced Concrete Structure under Shock-Wave Exposure (Simulation &amp; Experiment)

Glot, I.; Матвеенко, В. П.; Tsvetkov, R. V.; Шардаков, И. Н.; Shestakov, A.

doi:10.3103/s0025654419020055

Cited by 2 publications

(2 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…В этих условиях распространение по элементам конструкции вибрационных процессов от места локализации импульсного воздействия имеет сложный пространственно-временной характер. Так, в работе [27] с помощью численного моделирования продемонстрировано, как при ударе по одной из колонн 4-этажной бетонной конструкции деформационная волна распространяется по межэтажному перекрытию, «перетекая» по колоннам с этажа на этаж. В значительной степени указанные обстоятельства обусловливают сложности решения задачи об определении места импульсного воздействия.…”

Section: Introductionunclassified

Identification of the Impact Position in a Reinforced Concrete Structure Based on the Analysis of the Response of Vibration Sensors

Tsvetkov¹,

Шардаков²,

Glot³

et al. 2022

PNRPU Mechanics Bulletin

View full text Add to dashboard Cite

The article presents the results of an experiment to study the vibration response of a large-scale reinforced concrete model structure to an impulse load. The load was a series of impacts along the normal to the surface of the element and was applied to all the main structural ele-ments (columns, crossbars and floor slabs). The vibration response was recorded by a system of sensors-accelerometers distributed over the structural elements and synchronized with the accelerometer mounted on the striker. The results of measurements of acceleration vibrograms were saved as digital files. An array of vibrograms recorded by the entire complex of sensors in response to test impacts on the main structural elements made up a vibration portrait of the structure. As a result of processing this information, an array of data was obtained on the propa-gation time of the vibration signal from each signal source to each of the sensors of the registra-tion system (basic array of responses).Key words: Impact localization, accelerometer, The data obtained were used to solve the problem of determining the location of an arbi-trary impact on a structure. To do this, the vibration response recorded by the sensor system during an arbitrary impact was compared with the base array of responses. The comparison was made on the basis of the calculation of the pair correlation coefficients. The resulting spatial distribution of the correlation coefficients made it possible to identify the position of the shock load application. It corresponds to the structural element that has the maximum value of the correlation coefficient. The proposed algorithm was demonstrated on an example where one of the test shocks that participated in the FORMATION of the basic vibration portrait was used as an unknown load. In a numerical experiment using the proposed algorithm, it was found that the accuracy of the impact site identification corresponds to the characteristic step of the structural elements. It is shown that the accuracy correlates with the number of sensors of the registration system and their distribution throughout the structure. The developed algorithm for identifying the place of impact load application can be effec-tively used in the development of automated systems for deformation monitoring.

show abstract

Section: Introductionunclassified

Identification of the Impact Position in a Reinforced Concrete Structure Based on the Analysis of the Response of Vibration Sensors

Tsvetkov¹,

Шардаков²,

Glot³

et al. 2022

PNRPU Mechanics Bulletin

View full text Add to dashboard Cite

show abstract

“…The movement rules of the mold have experienced synchronous oscillation, trapezoidal oscillation and sinusoidal oscillation. With the development of the oscillation technology, mold non-sinusoidal oscillation has been one of the key technologies for highly efficient continuous casting [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Conformation and Experiment on Non-sinusoidal Oscillation Waveform Function for Continuous Casting Mold

et al. 2021

View full text Add to dashboard Cite

A novel non-sinusoidal oscillation waveform function was proposed to control the maximum acceleration, which had the advantages of continuity, no rigid impact and flexible impact, and good dynamics characteristics. Because the maximum acceleration of non-sinusoidal oscillation is larger, which makes the inertial force bigger and affects the mold movement smoothness. Thus, during the waveform function constructed, the maximum acceleration was taken in to account to ensure the dynamic characteristics of the oscillation waveform. And the oscillation waveform function was verified by the mechanical oscillator. The rotating rules of servomotor to realize this waveform function was determined. The experiment results show that the waveform function can be obtained well, the inertia forces of different directions for oscillation table is smaller and the oscillator runs smoothly.

show abstract

Spatiotemporal Distribution of Deformation Processes in Reinforced Concrete Structure under Shock-Wave Exposure (Simulation & Experiment)

Cited by 2 publications

References 7 publications

Identification of the Impact Position in a Reinforced Concrete Structure Based on the Analysis of the Response of Vibration Sensors

Identification of the Impact Position in a Reinforced Concrete Structure Based on the Analysis of the Response of Vibration Sensors

Conformation and Experiment on Non-sinusoidal Oscillation Waveform Function for Continuous Casting Mold

Contact Info

Product

Resources

About