3D random packing algorithm of ellipsoidal particles based on the Monte Carlo method

Chen, Changhong; Bai, Songlin; Huang, Ying; Lam, L.; Yao, Yao; Keer, Leon M.

doi:10.1680/jmacr.20.00228

Cited by 12 publications

(2 citation statements)

References 26 publications

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“…At the same time, it also provides valuable experience for subsequent researchers, and the enterprise has greatly broadened the practical application scope of the whole life-cycle project cost management. Research institutions in relevant Asian countries [22][23][24] have optimized and localized the full lifecycle project cost management according to their own characteristics. Relevant research scholars in Chinese Mainland have introduced BIM Technology into the full lifecycle project cost management, thus establishing an efficient, scientific, and reasonable full life-cycle project cost management scheme for the construction industry production e whole process of construction and operation and maintenance has further improved the efficiency of project cost management in the whole life cycle; On this basis, relevant research institutions [25][26][27] further developed and put forward three key contents of full life-cycle project cost management, corresponding to the database of project management within the life cycle of the construction industry.…”

Section: Relevant Research and Analysis: Analysis On The Current Situ...mentioning

confidence: 99%

Research on Life-Cycle Project Cost Management Based on Random Matrix Weight Algorithm

Chen¹,

Wang²

2022

Mathematical Problems in Engineering

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The traditional project management in the construction industry has the uniqueness of exclusive customization, the irreversibility of the project, the immobility of the project address, the long-term nature of the project, and the dynamic nature of the project. Based on these characteristics, the complexity and difficulty of project management in the construction industry are determined. Modern engineering is no longer satisfied with the traditional basic needs, but develops in a green, environmental friendly and efficient way. On the one hand, the project is required to meet good use requirements and meet the most basic functional requirements. On the other hand, the project construction process is required to meet the requirements of green environmental protection and ecological harmony. Therefore, the maintenance cost and operation cost corresponding to modern projects have become the key to the sustainable and healthy development of the engineering construction industry. Based on this, this paper will take the construction industry as an example to fully analyze the current situation and existing problems faced by the current project cost management. Through the research on the full life-cycle project cost management mode of the construction industry, the random matrix weight algorithm is creatively introduced, and the adaptive full life-cycle project cost management extended target tracking algorithm is proposed, which cuts the corresponding full life-cycle project cost management model into multiple submodels, and the corresponding management subobjectives are constructed from the submodel, and the expansion status of the corresponding subobjectives is described and analyzed in detail using the inverse distribution description, so as to accurately estimate the effect and target weight coefficient required by the management subobjectives, and finally realize the efficient, reasonable and scientific operation of the construction industry’s whole life-cycle project cost management, so as to maximize economic benefits. An experimental verification is carried out for a specific construction company. The verification results show that the full life-cycle project cost management scheme based on random matrix weight algorithm proposed in this paper has obvious advantages in management efficiency, cost control, process control, and other aspects compared with the traditional management scheme.

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Section: Relevant Research and Analysis: Analysis On The Current Situ...mentioning

confidence: 99%

Research on Life-Cycle Project Cost Management Based on Random Matrix Weight Algorithm

Chen¹,

Wang²

2022

Mathematical Problems in Engineering

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“…Yong et al [1] established a three-dimensional random aggregate model and carried out numerical simulation research on concrete target penetration tests by using LS-DYNA software. Chen et al [2] developed a mesomechanical pretreatment algorithm to construct the random ellipsoidal aggregate model for the mesoscopic structure of fully graded concrete. Yuan et al [3] studied the dynamic strength characteristics of dam concrete using the random aggregate model.…”

Section: Instructionmentioning

confidence: 99%

Numerical Simulation of Dynamic Characteristics of Dam Concrete Based on Fuzzy Set

et al. 2021

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The dynamic characteristics of concrete are the key point of the dam seismic safety design. In order to study the dynamic characteristics of concrete, a CT scan test of concrete under dynamic load was carried out; CT scan images of the concrete loading process were obtained. Based on the definition of integrity, integrity area, and intercepted sections in the quantitative zoning theory, the concrete CT images were divided into the hole or crack area ( P 0 − λ 1 ), hardened cement stone area ( P λ 1 − λ 2 ), and aggregate area ( P λ 2 − 1 ). And the determination method of partition threshold is studied. Then, based on the CT resolution unit, a concrete numerical calculation model of structural random is established, and the numerical simulation experiment of concrete under uniaxial dynamic load is carried out. The results show that the concrete numerical calculation model of structural random is very close to the actual mesostructure of concrete, and the interface thickness between aggregate and hardened cement is very close to the actual interface thickness (which is 40~50 μm). Under the action of dynamic load, the damage of the sample is mainly concentrated in the upper part of the sample, and the damage is easy to occur at the initial defect place, and the damage occurs at multiple points at the same time. The damage crack is relatively straight, the phenomenon of the crack passing through the aggregate is obvious, and the crack expands along the fastest path of energy release.

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Asymptotic homogenization of effective thermal-elastic properties of concrete considering its three-dimensional mesostructure

Zhang

Quan

et al. 2023

Computers & Structures

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3D random packing algorithm of ellipsoidal particles based on the Monte Carlo method

Cited by 12 publications

References 26 publications

Research on Life-Cycle Project Cost Management Based on Random Matrix Weight Algorithm

Research on Life-Cycle Project Cost Management Based on Random Matrix Weight Algorithm

Numerical Simulation of Dynamic Characteristics of Dam Concrete Based on Fuzzy Set

Asymptotic homogenization of effective thermal-elastic properties of concrete considering its three-dimensional mesostructure

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