Multi-scale analysis method for composite-metal hybrid truss nodes using the MPC-submodel approach

Lu, Huadong; Li, Fei; Zhao, Qilin; Hu, Hao; Zhou, Lijun; Zhou, Kuangyu

doi:10.1016/j.istruc.2023.105419

Cited by 4 publications

(1 citation statement)

References 21 publications

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“…Welded structures are widely used in all walks of life, especially in machinery, civil engineering, transportation and other industries, such as: cranes, excavators, Bridges, buildings and so on. Due to the large size and complex structure of large structures, multi-scale models, that is, multiple element coupling models, are often used in mechanical analysis by finite element method [1]. Andrzej [2] carried out finite element analysis of the bridge by using different types of elements.…”

Section: Introductionmentioning

confidence: 99%

A method: multi-scale calculation life of welded beams with residual stress

Shining,

Wang,

Gao

et al. 2024

Eng. Res. Express

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To improve the accuracy of the probability of life value calculation while ensuring computational efficiency, a study was conducted on the finite element probability of life calculation method for beam-shell coupling. On the basis of the finite element heat and stress coupling model of Type I welded beam, a fatigue fracture model of residual stress and cyclic load coupling was established. The probability of life calculation of beam-shell elements was theoretically derived, and the expression of the probability of life model was unified. The probability of life of Type I welded beam was calculated, and it was compared with the model of beam assumption and the full life test result. The results show that the computational efficiency of the beam-shell coupling model is higher than that of the shell element model. In addition, the probability of life calculation result obtained by the beam-shell coupling model is highly consistent with the experimental result in statistical terms, and it has higher accuracy at low stress levels than the calculation result of the beam element, with the relative error between the median of the calculation result and the experimental result being less than 10%.

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Section: Introductionmentioning

confidence: 99%

A method: multi-scale calculation life of welded beams with residual stress

Shining,

Wang,

Gao

et al. 2024

Eng. Res. Express

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Design Method of a Novel Interface Connection Device for Multiscale Test Model Considering Multiparametric Similarity of Internal Forces

Li,

Wang,

Dong

et al. 2024

Structural Design Tall Build

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The multiscale model of building structures, as a balanced solution between accuracy and cost, has been widely used in the analysis of structural seismic performance. A reasonable interface connection method can accurately ensure load transfer and motion coordination between models of different scales. In this paper, a novel interface connection device and the corresponding design method for a multiscale test model of building structures were proposed, in which the upper structure with smaller sized components was replaced by a simplified story‐scale model, and the lower structure was adopted as a component‐scale model. The overall and local equations of motion for this multiscale model were established. For the interface connection between different scale models, a design method considering multiparametric similarity of shear force, axial force, and bending moment was proposed. In this method, the internal nodes at the interface of the component scale model were decomposed, and the coupling relationship of internal force between two adjacent nodes was established. The axial force of each node was decoupled into the interstory shear force and bending moment provided together. Additionally, the overturning moment is provided by adding the overlapping domain. According to the equilibrium relationships of the nodes at the interface, the corresponding transfer matrix was provided, and the design method of the interface connection device was proposed. The accuracy and feasibility of the method were validated by static and shaking table tests on a frame structure.

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Hexahedral Solid Element with Rotational Degrees of Freedom Based on a Novel Trail-Correction Displacement Interpolation Scheme

Huang,

Li,

et al. 2024

Iran J Sci Technol Trans Mech Eng

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Multi-scale analysis method for composite-metal hybrid truss nodes using the MPC-submodel approach

Cited by 4 publications

References 21 publications

A method: multi-scale calculation life of welded beams with residual stress

A method: multi-scale calculation life of welded beams with residual stress

Design Method of a Novel Interface Connection Device for Multiscale Test Model Considering Multiparametric Similarity of Internal Forces

Hexahedral Solid Element with Rotational Degrees of Freedom Based on a Novel Trail-Correction Displacement Interpolation Scheme

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