The central strain analytical modeling and analysis for the plate rolling process

Jiang, Lianyun; Wei, Yao-Yu; Ma, Lifeng

doi:10.1007/s00170-021-08148-2

Cited by 9 publications

(3 citation statements)

References 21 publications

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“…Big data is a product that emerged in the process of modern high-tech development and has strong market potential, and through relevant practical analysis, it is found that big data can play an important role in the process of urban planning. First, the government can use big data technology to understand and master the problems that arise in the process of urban spatial planning, make timely decisions, and deal with these problems [1]. Secondly, in the traditional model, the information channel is single, and the accuracy of the data obtained is limited, which can no longer match the requirements of modern urban planning; the application of big data technology can quickly expand the information and sources of urban and rural planning data.…”

Section: Introductionmentioning

confidence: 99%

Information Extraction and Data Planning of Smart City Based on Internet of Things

Farisi

2022

Journal of Sensors

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In order to solve the problem of slow resource scheduling in the process of smart city management, the author proposes a smart city information extraction and data planning system based on the Internet of Things. IoT requires different technologies for analysis for different data types. Managers use different IoT applications to analyze data from different devices and integrate relevant data for possible machine failure or emergency in smart home applications. Situation is predicted. The system includes a cloud platform intelligence center, uses the cloud management module to monitor various hardware devices, constructs the cloud computing resource scheduling objective function, uses the cultural particle swarm algorithm to solve the objective function, and obtains the cloud computing resource scheduling scheme. The experimental results show that the overall utilization rate of the system is the best, close to 100%. Conclusion. The system can realize the effective management of the smart city and monitor the city situation in real time. When implementing resource scheduling, the task completion time is short, the system utilization rate is high, and the resources can be maximized.

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Section: Introductionmentioning

confidence: 99%

Information Extraction and Data Planning of Smart City Based on Internet of Things

Farisi

2022

Journal of Sensors

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“…Ding et al [17] gained the velocity field of the fixed angle of the chamfered edge using the flow function method, derived the dog-bone shape coefficient from the volume invariant condition, and then obtained the plastic deformation power, shear force and friction force separately using the equal yield criterion. Jiang et al [18] modified the boundary conditions of the adjacent deformation region in order to establish the near-real kinematic allowable velocity field using the flow function method. Sezek et al [19] set up the three-dimensional deformation of the plate rolling process utilizing the upper bound theorem.…”

Section: Introductionmentioning

confidence: 99%

The curvature modeling for the double layered clad plate by asymmetric rolling with different diameters

Jiang,

Liang,

Chen

et al. 2024

Int J Adv Manuf Technol

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The plate curvature model plays an important role in the prediction and control of the double layered clad plate. However, there is currently no such a fast, precise and stable plate curvature model, and the actual shear stress on the cross section is uneven distributed actually which is conflicted with the uniform assumption of the traditional model. Based on the non-uniform distribution, this paper innovatively presents a theoretical plate curvature model using the flow function method and the upper bound method together without the complex stress analysis. The inlet boundary conditions of the model are more accurate modified and optimized as nonlinear functions. The velocity field and strain rate field were built depending on the flow function field. The plastic deformation, shear and friction power were developed by the five-node Gauss-Legendre quadrature method. The post-rolling strain model was obtained by integrating the positive strain rate and shear strain rate with time. The curvature model was constructed by calculating the curvature due to linear and shear strain differences. To demonstrate the validity of the theoretical model, the experiments and the simulation were conducted. The results showed that the relative deviation of the numerical values va and vb is less than 10.0%, accounting for 95.1% and 95.4%, compared with theoretical values. The shear power difference between layer a and b is the main reason for bending. The bending phenomenon appeared the outlet section of the plate, and the velocity difference provided the shear stress required for bending. The increase of the diameter ratios lead to the increase of the shear strain difference and shear power, and it leads to an increase in the total curvature. To certify the precision of the curvature model, the deviation of the theoretical peak curvature values is 12.05%, *

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“…The effects of roll offset, speed ratio, depression amount and roll radius on the curvature of the plate are studied by using the nite element model during the snake rolling process. Jiang et al [15] studied the modeling method of the equivalent strain of the synchronous rolling based on the upper bound principle and ow function method. Sun et al [16] used the ow function method to analyze the rheological properties of the cast-rolled deformation zone, and established the velocity eld of the cast-rolled zone.…”

Section: Introductionmentioning

confidence: 99%

The theoretical model of the effective strain establishment for the plate during the snake rolling

Jiang

Yang

Xue

et al. 2023

Int J Adv Manuf Technol

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The snake rolling for the heavy plate rolling has been veri ed that it can re ne the grain and solve the problem of insu cient deformation in the center of the plate to some extent. The effective strain along the thickness is mainly obtained by the nite element method and the experiments which cost a long time and great material resources. A theoretical model of the effective strain is required to solve the problem. The metal ow model including the shear deformation is established according to the actual asymmetric distribution of stress and strain in the deformation zone. The parabolic roll gap inlet boundary equation is proposed according to the kinematic characteristics of plate rolling. The plastic deformation power, shear power and friction power models are established according to the rst variational principle of the rigid plasticity and the principle of virtual velocity. The analytic model to calculate the effective strain of the snake rolling has been established by the principle of minimum energy and the theory of continuum mechanics. The model accuracy has also been veri ed by the nite element method and the experiments. The minimum and the maximum relative error is 1.33% and 13.44% which is acceptable for industrial applications. This research will provide an important guidance for the process and process parameters setup.

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The central strain analytical modeling and analysis for the plate rolling process

Cited by 9 publications

References 21 publications

Information Extraction and Data Planning of Smart City Based on Internet of Things

Information Extraction and Data Planning of Smart City Based on Internet of Things

The curvature modeling for the double layered clad plate by asymmetric rolling with different diameters

The theoretical model of the effective strain establishment for the plate during the snake rolling

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