Experimental and numerical modal analysis of wall tubes in the coal‐fired boiler or radiant syngas cooler

Shao, Lintao; Guo, Wei; Yang, Weijuan; Xia, Zhihong; Jian-ping, Kuang; Zhou, Zhijun

doi:10.1002/cjce.24294

Cited by 3 publications

(4 citation statements)

References 19 publications

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“…Modal analysis of the mechanical system can obtain its inherent frequency and modal vibration pattern, and then avoid resonance of the mechanical structure [12], this section uses ABAQUS to perform modal analysis of the designed fixture, and the material parameters of each component are shown in Table 6. The positive tetrahedral structure C3D10 is selected to perform uniform meshing of the model, and Figure 19 shows the model after meshing.…”

Section: Modal Analysismentioning

confidence: 99%

Design and Simulation Analysis of Robot-Assisted Plate Internal Fixation Device for Lower Limb Fractures

Zhou

Chen

Sun

et al. 2023

Int. J. Robot. Autom. Technol.

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Internal fixation with steel plates is a common method for the therapy of lower limb fractures. Due to the disadvantages of traditional surgical methods such as high trauma and complications, the application of robots for minimally invasive surgery has become a popular research direction. In this article, we have designed and simulated the overall structure of a steel plate internal fixation device used in conjunction with a robotic arm. Firstly, a finite element model of cortical bone drilling was established based on ABAQUS to obtain the torque and axial force when drilling the cortical bone. Then a virtual prototype of the robot-assisted lower limb bone fracture plate internal fixation device was designed, and the outer shell, drilling mechanism, nail placement mechanism, nail supply mechanism, drive mechanism, and guide sleeve were refined based on the overall mechanical structure of the device, so that the device could continuously perform drilling and nail placement. Afterward, the device was simulated based on ADAMS, and the motion curves of each component were obtained to verify the feasibility of the device’s working principle and to validate the performance of the servo. Finally, the modal analysis of the device was carried out with the finite element software ABAQUS, and the modal parameters of the first six orders were obtained, which were compared with the operating frequencies of the motor and the servo to verify that the device is not easy to resonate during normal operation, and the static strength checks of the key components were carried out, and the stress and deformation clouds and upper limits of flexural values of the components were obtained, which proved that the structure has stability.

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Section: Modal Analysismentioning

confidence: 99%

Design and Simulation Analysis of Robot-Assisted Plate Internal Fixation Device for Lower Limb Fractures

Zhou

Chen

Sun

et al. 2023

Int. J. Robot. Autom. Technol.

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“…The IRA method was applied to investigate the vibration modal of water wall‐tubes by our team. [ 9 ] Modal parameters (the natural frequency, damping ratio, and mode shapes) of wall tubes composed of three tubes and fins were studied through the modal tests and numerical simulation based on the finite element method. The numerical result was similar to the experiment within 10% bias, which indicated that the numerical method was a reliable method to study the modal characteristics.…”

Section: Introductionmentioning

confidence: 99%

“…In this study, based on the preliminary work, [ 9 ] IRA was further developed using a real RSC as the object. Model establishment was conducted based on the finite element software ABAQUS, [ 28 ] and the natural vibration characteristics were revealed by modal analysis.…”

Section: Introductionmentioning

confidence: 99%

“…[5] Many efforts have been concentrated on the ash deposit shedding technologies, such as pneumatic soot-blowing, sonic sootblowing, impulse soot-blowing with high power, and rapping ash removal. [6][7][8][9][10] Among them, soot-blowing is an efficient solution for slag deposits shedding in most cases. However, for high viscosity ash in gasifier and RSC with high pressure conditions, soot-blowing is not relatively effective or economical.…”

Section: Introductionmentioning

confidence: 99%

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Simulation analysis of instantaneous impact on the radiant syngas cooler by rapping vibrators

et al. 2023

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Slag or ash removal from water wall tubes in a radiant syngas cooler (RSC) is a routine task in operation, which can effectively increase the overall thermal efficiency. Rapping ash removal is one of the valid methods for shedding off the ash deposits in the high‐pressure surroundings of the RSC. In this study, the model of a real RSC was established by a numerical simulation based on the finite element software ABAQUS, and modal analysis and instantaneous response analysis (IRA) were researched to reveal the natural vibration characteristics of the RSC and aid the design of rapping ash removal. On the basis of the results of natural vibration characteristics and a subsequent harmony response, 16 Hz was set as the impact frequency, balancing off the vibrator number and the water‐tube displacement effect. It was indicated that ash deposit in the area around 1/2 longitudinal position was easy to remove due to great response to rapping action. Moreover, rapping at ½ position generally obtained greater displacement response in the whole RSC. A rapping design was proposed with six vibrators at the ½ longitudinal position and 16 Hz frequency, and then two rapping intervals were investigated comparatively. The case with a half‐cycle interval had a slightly larger response than the one‐cycle case, with a larger displacement in more circumferential tubes as well as with a greater sound pressure response in the RSC.

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Study on the Deflagration Characteristics and Application of Portable Gas Pulse Ash Cleaning Devices

Zhao,

Wei,

Bin

et al. 2024

ACS Chem. Health Saf.

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Experimental and numerical modal analysis of wall tubes in the coal‐fired boiler or radiant syngas cooler

Cited by 3 publications

References 19 publications

Design and Simulation Analysis of Robot-Assisted Plate Internal Fixation Device for Lower Limb Fractures

Design and Simulation Analysis of Robot-Assisted Plate Internal Fixation Device for Lower Limb Fractures

Simulation analysis of instantaneous impact on the radiant syngas cooler by rapping vibrators

Study on the Deflagration Characteristics and Application of Portable Gas Pulse Ash Cleaning Devices

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