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Recent Advances in Complex Mechanical System

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Mechanical Engineering".

Deadline for manuscript submissions: closed (20 February 2025) | Viewed by 4514

Special Issue Editor


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Guest Editor
School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou 221116, China
Interests: mechanical/hydraulic rock crushing theory and technology; mine intelligent mining technology and equipment; special robot technology and equipment

Special Issue Information

Dear Colleagues,

At present, a new round of scientific and technological advancements is emerging. The new generation of information technology represented by the Internet, big data, cloud computing, artificial intelligence, etc., is accelerating integration with industrial technology. The mechanical equipment system is facing new challenges and scientific conundrums, such as the integration of design and manufacturing, the integration of structure and function, the extreme service environment and working conditions, the high quality of equipment accuracy, the autonomy of operation decision-making and control, the equipment manufacturing and service greening, which put forward higher requirements for independent design and manufacturing of complex equipment systems. The deep integration of multi-source heterogeneous information and knowledge of mechanical equipment in the whole life cycle of creativity, design, processing, assembly, testing, service, maintenance and recovery, and the development of intelligent design methods for complex equipment are important directions for future equipment innovative design.

Prof. Dr. Songyong Liu
Guest Editor

Manuscript Submission Information

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Keywords

  • intelligent mechanical equipment
  • integrated design
  • modern design methods
  • equipment reliability analysis
  • system fault prediction
  • autonomous control and decision-making

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Published Papers (3 papers)

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Research

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12 pages, 2276 KiB  
Article
A Nonlinear Damper with Dynamic Load and an Elastic Slit Membrane: Modeling and Interaction Analysis
by Mostafa Sadeghian, Kestutis Pilkauskas, Paulius Palevicius, Jurate Ragulskiene, Giedrius Janusas, Viktoras Dorosevas and Arvydas Palevicius
Appl. Sci. 2024, 14(17), 7663; https://doi.org/10.3390/app14177663 - 30 Aug 2024
Cited by 1 | Viewed by 965
Abstract
This article presents research into the feasibility of applying a nonlinear damper of a new conceptual structure. The key component of the damper is a circular membrane with slits that can move in a cylinder filled with viscous fluid. When an external load [...] Read more.
This article presents research into the feasibility of applying a nonlinear damper of a new conceptual structure. The key component of the damper is a circular membrane with slits that can move in a cylinder filled with viscous fluid. When an external load is applied to the damper, the membrane deforms, opening the slits. The flow of viscous fluid through the slits generates a damping force. The phenomenological model of the damper is based on the notion that the slit membrane moves according to the fundamental axisymmetric vibration mode of a circular membrane. The slit membrane blocks the entire radius of the pipe in the state of equilibrium when all slits are closed. As the membrane moves, the opening area of the slits varies depending on its deformation. This gives a nonlinear damping characteristic. The damping constant depends on the input displacement and velocity, which is the reason for the nonlinearity of the damping characteristic. From the phenomenological model, the nonlinear characteristic of the drag force is obtained. The performance of the damper is simulated using a mass–spring–damper system. Two cases of harmonic excitation and impulse excitation are analyzed. The results show that, using the slit membrane damper, the suppression of dynamic loads is more effective compared to a conventional linear damper. Full article
(This article belongs to the Special Issue Recent Advances in Complex Mechanical System)
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14 pages, 5267 KiB  
Article
Reliability Evaluation and Reliability-Based Sensitivity for Transposition System in Power Servo Tool Holder
by Di Zhou, Yonglin Guo, Guojun Gu, Qixiang Man and Yimin Zhang
Appl. Sci. 2024, 14(16), 7117; https://doi.org/10.3390/app14167117 - 13 Aug 2024
Viewed by 945
Abstract
Tool holders are one of the most important structures in transferring machine tools and energy for manufacturing in CNC lathe. Power servo tool holders influence kinematic accuracy and machining accuracy and so are vital to the transposition system. Reliability evaluation is also critical [...] Read more.
Tool holders are one of the most important structures in transferring machine tools and energy for manufacturing in CNC lathe. Power servo tool holders influence kinematic accuracy and machining accuracy and so are vital to the transposition system. Reliability evaluation is also critical to guaranteeing and maintaining the accuracy of the transposition system. The first four statistical moments are derived to depict the transmission error and system characteristics. Considering the Edgeworth expansion with higher terms, reliability and reliability-based sensitivity evaluations using moments are proposed to assess system accuracy. Compared with different methods, the proposed method can represent higher statistical characteristics, helping to avoid underestimations of system reliability. Also, results calculated with the proposed method for the transposition system are in agreement with the results from the Monte Carlo simulation with 107 samples. The relative error of failure probability is 4.32%. Considering the plus–minus sign and values of results, reliability-based sensitivity represents the effects of the parameters’ dispersions on system reliability. The reliability-based sensitivity indices can be utilized to optimize the system structure and to improve system accuracy, which can increase the system reliability from 98.34% to 99.99% in the transposition system of the power servo tool holder. Full article
(This article belongs to the Special Issue Recent Advances in Complex Mechanical System)
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Review

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19 pages, 2307 KiB  
Review
From Biological Gene to Functional Gene: Revolutionizing Product Innovation Design
by Peng Zhang, Zeyuan Ren, Chuankai Zhang, Hongxiang Wang and Zifeng Nie
Appl. Sci. 2024, 14(1), 199; https://doi.org/10.3390/app14010199 - 25 Dec 2023
Cited by 1 | Viewed by 1887
Abstract
The functional gene is a product of functional information expression methods inspired by biological genes. Product innovation design is essentially a process of functional problem-solving, which has an intrinsic connection with biological gene expression. The analogy of biological genes, which standardize product function [...] Read more.
The functional gene is a product of functional information expression methods inspired by biological genes. Product innovation design is essentially a process of functional problem-solving, which has an intrinsic connection with biological gene expression. The analogy of biological genes, which standardize product function information into functional genes and apply them in product innovation design, holds enormous potential. This paper provides a comprehensive analysis of relevant literature. Firstly, it elaborates on the development of functional genes from the refinement of product genes, clarifying the relationship between functional genes and product genes. Then, it discusses the theoretical foundations of functional gene research, such as the concept, characteristics, and information transmission pathways of functional genes. Moreover, it analyzes key technologies for the application of functional genes, such as functional information encoding forms, and functional gene structure, while summarizing research case studies on functional gene applications. Finally, it explores three key challenges: determining functional gene information content, protecting intellectual property rights, and identifying defects. It also proposes research entry points, aiming to provide references for the field of product innovation design. Full article
(This article belongs to the Special Issue Recent Advances in Complex Mechanical System)
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