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2nd International Conference of Mechanical system Dynamics, ICMSD 2023

作者： Qi, Luyao Wu, Genyang Yang, Fufeng Zhang, Lina National Key Laboratory of Complex Multibody System Dynamics Institute of Launch Dynamics Nanjing University of Science and Technology Nanjing210094 China

ISBN: (纸本)9789819980475

Truck-Mounted Howitzer has outstanding advantages such as a high level of information technology, good tactical mobility, and strong comprehensive combat capabilities, playing an important role in modern warfare. Different road surfaces and vehicle speeds seriously affect the off-road performance of Truck-Mounted Howitzer. To study the dynamic characteristics of the Truck-Mounted Howitzer under different working conditions, this paper establishes a three-dimensional model and a driving dynamic model of the Truck-Mounted Howitzer. Dynamic simulation analysis is carried out using SOLIDWORKS Motion software to obtain the dynamic characteristics of typical parts of the vehicle body under different road surfaces and vehicle speeds, and its ride comfort is evaluated. The accuracy of the simulation results is verified through comparison with experimental data. The research in this article will provide a reference for the optimization design of dynamic parameters of Truck-Mounted Howitzer. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Roads and streets

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simulation and Experimental Study on the Impact Force of the Elastic Belt and the Central Part 2nd

Simulation and Experimental Study on the Impact Force of the...

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2nd International Conference of Mechanical system Dynamics, ICMSD 2023

作者： Wei, Qiyong Yang, Fufeng National Key Laboratory of Complex Multibody System Dynamics Institute of Launch Dynamics of Nanjing University of Science and Technology Nanjing210094 China

ISBN: (纸本)9789819980475

The belt squeeze pressure and the impact force in the core part affect the motion attitude and velocity of the projectile in the bore, which are important factors affecting the initial disturbance, shooting accuracy and launching safety of the projectile. The movement of projectile in the chamber experiences the harsh environment of high temperature, high pressure and high overload, which makes it difficult to test the squeeze pressure of the projectile belt and the impact force of the central part. In this paper, a nonlinear finite element model of the movement of gun barrel and projectile bore is established, and the changes of the belt pressure and the impact force of the center part are simulated and analyzed. Based on PVDF piezoelectric film, the elastic belt pressure sensor and the collision force sensor of the center part were designed and developed. The sensitivity and other performance parameters of the sensor were obtained by dynamic calibration. The change process of the elastic belt pressure and the collision force of the center part was obtained by live firing test. The research in this paper has important reference value for the measurement of the motion in the bore of the projectile, the impact analysis of the launch safety and the shooting accuracy. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Projectiles

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Adaptive Elliptic Basis Function Model Construction Strategy Based on Particle Swarm Optimization 2nd

Adaptive Elliptic Basis Function Model Construction Strategy...

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2nd International Conference of Mechanical system Dynamics, ICMSD 2023

作者： Lin, Shengtan Rong, Bao Yang, Shuai Institute of Launch Dynamics National Key Laboratory of Complex Multibody System Dynamics Nanjing University of Science and Technology Nan Jing China

ISBN: (纸本)9789819980475

To address the problems of poor generality and difficulty in obtaining opti-mal parameter combinations for existing surrogate models, this paper pro-poses a construction strategy for an adaptive Elliptic Basis Function neural network model based on particle swarm optimization (PSO-EBF). The K-means clustering algorithm is introduced in the EBF model to improve the efficiency and diversity of model construction. On this basis, the PSO algorithm is introduced to take the EBF model parameters: width coefficient, number of kernel functions, smoothing coefficient, etc. as design variables, and take the model determination coefficient R2 as the optimization objective, and automatically search for the optimal parameter combination of the model. The numerical experimental results show that the PSO-EBF model constructed in this paper can effectively improve the efficiency of surrogate model construction. Compared with ISight commercial software, the accuracy of the PSO-EBF model is higher than that of the traditional EBF model, which proves that this adaptive model can effectively solve the complexity and blindness of surrogate model construction process and improve the efficiency of model construction. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Neural network models

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Definition of Standard Input Data in Launch Dynamics of Multibody systems 2nd

Definition of Standard Input Data in Launch Dynamics of Mult...

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2nd International Conference of Mechanical system Dynamics, ICMSD 2023

作者： Li, Geng Zhou, Qinbo Wang, Guoping Li, Tang National Key Laboratory of Complex Multibody System Dynamics Nanjing University of Science and Technology Nanjing China Institute of Launch Dynamics Nanjing University of Science and Technology Nanjing China

ISBN: (纸本)9789819980475

At present, each program for launch dynamics of multibody systems (LDMS) has its own data structure without a unified standard, which is not beneficial to the program development and maintenance. To improve the program's versatility, it is important to study the standardization of the data structure and input data for the LDMS code. Based on the launching subsystem proposed in (Zhou et al., Def Technol 17(6), 2011–2026 [4]), we design a general data structure and standard input data (SID) for the codes of the launching subsystem dynamics in this work. Based on object-oriented programming (OOP) technology, the unified modeling language (UML) is adopted to describe the geometry, kinematics, kinetics and subjected forces of the launching subsystem. The UML class diagram is used to describe the variable properties, such as definitions, types, and default units within each data structure. At the same time, the relationship among various classes is represented by straight or dashed line segments with a specialized convention. Further, the input data structure of the launching subsystem dynamics code is designed: the SID is defined for parameter initialization, which is stored in an extensible markup language (XML) document and read by the program. This work provides a theoretical basis and important guidance for the program design of LDMS. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： XML

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Research on High-Speed Camera Testing Method for Initial Disturbance of Large-Caliber Artillery Projectiles 2nd

Research on High-Speed Camera Testing Method for Initial Dis...

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2nd International Conference of Mechanical system Dynamics, ICMSD 2023

作者： Rao, Zixuan Zhang, Xu Yang, Fufeng Feng, Yu National Key Laboratory of Complex Multibody System Dynamics Institute of Launch Dynamics Nanjing University of Science and Technology Nanjing210094 China

ISBN: (纸本)9789819980475

The initial disturbance of the projectile has an important impact on the accuracy of artillery shooting, and in order to reduce the initial disturbance and improve the shooting accuracy of large-caliber artillery, a high-speed camera method is adopted to study the initial disturbance of the projectile. The velocity, attitude angle, and angular velocity of the projectile at the muzzle are used to characterize the initial disturbance of the projectile. A binocular camera calibration model is constructed to obtain the camera parameter matrix, and the three-dimensional reconstruction of the markers on the projectile and the gun barrel is performed to obtain the initial disturbance parameters of the projectile and the muzzle vibration parameters. This method has the characteristics of non-contact and strong flexibility, and the obtained experimental data truly reflects the state of the projectile at the muzzle and the muzzle vibration parameters during the period from launch to muzzle exit of the projectile. The obtained data can provide a basis for the structural design of artillery. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Projectiles

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Research on Fault Diagnosis and Related Control Software of Armored Vehicle Magnetorheological Suspension system 2nd

Research on Fault Diagnosis and Related Control Software of ...

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2nd International Conference of Mechanical system Dynamics, ICMSD 2023

作者： Liang, Jiahao Zhu, Hongtao Zhu, Wei National Key Laboratory of Complex Multibody System Dynamics Institute of Launch Dynamics Nanjing University of Science and Technology Nanjing210094 China

ISBN: (纸本)9789819980475

The damping force of armored vehicle magnetorheological (MR) dampers is controlled by changing the coil current, so whether the coil current can be effectively controlled and fault diagnosis has a significant impact on the working effect of MR dampers. To address this issue, the excitation coil is simplified as an inductance resistance model. By detecting the working current and voltage, the circuit operating state parameters of the MR damper are observed to determine system faults and achieve effective estimation;Based on the estimated results, control algorithms are used to control the working state of the coil circuit, improving the response speed of the system without affecting the stability of the MR damper. Based on heat transfer theory, a temperature rise model of a MR damper can be established. Combined with Bingham model, the relationship between the output force and temperature of the MR damper can be obtained. By using an improved genetic algorithm, the corresponding mechanical parameters can be identified. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Armored vehicles

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Track system Dynamic Analysis by the Riccati Multibody system Transfer Matrix Method 2nd

Track System Dynamic Analysis by the Riccati Multibody Syste...

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2nd International Conference of Mechanical system Dynamics, ICMSD 2023

作者： Miao, Yangyang Rui, Xiaoting Wang, Pingxin Zhang, Jianshu Institute of Launch Dynamics National Key Laboratory of Complex Multibody System Dynamics Nanjing University of Science and Technology Nanjing210094 China

ISBN: (纸本)9789819980475

The track systems are an important part of the tracked vehicle dynamics modeling. The Riccati Multibody system Transfer Matrix Method (RMSTMM) is adopted to model the dynamics of the tracked systems. During the process, the state variables at the connected ends of the elements within the track systems are transferred through low-order matrices that are independent of the system degrees of freedom, and there are no global dynamics equations with a system inertia matrix. Therefore, using the RMSTMM to analyze the track system has the advantage of facilitating access to the physical quantities associated with the state variables of the components. In conjunction with modeling process, the dynamic characteristics of the track system under different simulation conditions are analyzed, including the applied force of a track shoe running for one revolution and the dynamic tension distribution of the track system. Numerical investigations have shown that based on the RMSTMM, the analysis method of the track system can analyze the dynamic characteristics of tracks at a detailed level, while the method has strong designability and practical. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Transfer matrix method

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Mitigating overtrust towards robot in mixed reality interfaces 1

Mitigating overtrust towards robot in mixed reality interfac...

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1st International Conference on Artificial Intelligence and Human-Computer Interaction, ArtInHCI 2023

作者： He, Di Zhao, Changshun Zhang, Kaiyue Yang, Hongrong Liu, Ying University of Electronic Science and Technology of China Chengdu China National Key Laboratory for Complex Systems Simulation Beijing China Officers College of PAP Chengdu China

ISBN: (纸本)9781643685083

This research focuses on the role of trust in human-agent interaction, particularly in the context of home robot systems. The study found that participants were more likely to collaborate when they understood the agent's intentions. The research involved 36 participants working with an agent across three different interfaces to complete household tasks. The results showed that clear agent intentions can increase cooperation and calibrate trust to an appropriate level. © 2024 The Authors.

关键词： Human robot interaction

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Turbulent drag reduction by sector-shaped counter-flow dielectric barrier discharge plasma actuator

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Chinese Physics B 2025年第2期34卷 362-370页

作者： Borui Zheng Shaojie Qi Minghao Yu Jianbo Zhang Linwu Wang Dongliang Bian School of Automation and Information Engineering Xi’an University of TechnologyXi’an 710048China School of Mechanical and Precision Instrument Engineering Xi’an University of TechnologyXi’an 710048China Science and Technology on Plasma Dynamics Laboratory Air Force Engineering UniversityXi’an 710038China Shaanxi Key Laboratory of Complex System Control and Intelligent Information Processing Xi’an 710048China Shaanxi University Key Laboratory of Photonic Power Devices and Discharge Regulation Xi’an 710048China

The primary objective in aircraft transportation is to minimize turbulent drag, thereby conserving energy and reducing emissions. We propose a sector-shaped counter-flow dielectric barrier discharge plasma actuator, which leverages jet synthesis for drag reduction. A drag control experiment was conducted in a low-speed wind tunnel with a controlled flow velocity of 9.6 m/s(Re = 1.445 × 10^(4)). This study investigated the effects of varying pulse frequencies and actuation voltages on the turbulent boundary layer. Using a hot-wire measurement system, we analyzed the pulsating and time-averaged velocity distributions within the boundary layer to evaluate the streamwise turbulent drag reduction. The results show that the local TDR decreases as the pulse frequency increases, reaching a maximum reduction of approximately 20.97% at a pulse frequency of 50 Hz. In addition, as the actuation voltage increases, the friction coefficient decreases, increasing the drag reduction rate. The maximum drag reduction of approximately 33.34% is achieved at an actuation voltage of 10 kV.

关键词： plasma flow control turbulent boundary layer turbulent drag reduction

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simulation Experiment Factor Screening Method Based on Combinatorial Optimization 21st

Simulation Experiment Factor Screening Method Based on Combi...

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21st Asia simulation Conference, AsiaSim 2022

作者： Zhang, Peng Li, Wei Chen, Qingao Tong, Jiahui Control and Simulation Center Harbin Institute of Technology Harbin China Science and Technology on Complex System Control and Intelligent Agent Cooperation Laboratory Beijing China

ISBN: (纸本)9789811991974

When conducting complex simulation experiments, experimental factor screening is of great significance to improve the effectiveness and efficiency of the simulation. Aiming at the problems of unsatisfactory accuracy and efficiency of existing experimental factor screening methods, a simulation experiment factor screening method based on combinatorial optimization (EFS-CO) was designed. EFS-CO abstracts the experimental factor screening problem into a combinatorial optimization problem, designs the experimental factor evaluation criteria based on the support vector machine model, uses it as the fitness function of the genetic algorithm, and finally obtains the significant experimental factor. At the same time, to eliminate the influence of the randomness of the genetic algorithm on the screening results, the screening results of the experimental factors were determined based on the results of multiple experiments. Finally, the effectiveness of the method is verified by example analysis and comparing the results with the traditional experimental factor screening method. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Combinatorial optimization

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