bluuebunny/crossref_metadata_2025_split huggingface dataset:
Simulation Design of Non-lethal Hollow Spherical Kinetic Energy Projectile Based on ANSYS LS-DYNA
Authors: Wang Song 
Published: January 2025

Abstract
In order to promote the intrinsically safe design of non-lethal kinetic energy projectile, an optimization design study was carried out for 38 mm hollow spherical non-lethal kinetic energy projectile. The impact rigid wall experiment of solid spherical projectile was used to complete the indirect verification of the projectile material parameters. The projectile wall thickness of 5, 7, 9, 11 and 13 mm was set respectively. Based on ANSYS LS-DYNA software, the changes of velocity, kinetic energy, radius, specific kinetic energy, VCmax value, energy transfer ratio and other data under five kinds of wall thickness were analyzed. The results showed that when the thickness, density, and impact velocity were separately set as 11 mm, 0.998 kg/m3, and 100 m/s, the wounding power of the projectile did not exceed the threshold of specific kinetic energy and VCmax value. Which provided the parameter support for the hollow spherical non-lethal kinetic energy projectile sample processing.
Research on the Structural Safety Performance of Front Fan-Shaped Energy-Saving Duct
Authors: Tang Xu , Zhao Chenyang , Wang Xing , Xia Haochao , Zhou Bin 
Published: January 2025

Abstract
Whether the structural design of an energy saving duct is reasonable is crucial to its own safety and that of the stern. Taking the front-mounted scalloped duct of a certain type of bulk carrier as the research object, load calculation and reasonable load combination design are carried out according to its actual working conditions, and the safety performance of the structure is evaluated through strength analysis, modal analysis and fatigue analysis. The results show that the structural design of the sector duct is reasonable and meets the requirements of strength and fatigue, and can avoid the occurrence of resonance phenomena, and that the bumping load on the duct from wave loads in rough sea conditions is an important factor to be considered in the structural design of the duct.
Design of Automatic Recycling and Conveying System for Unpacking Tobacco Cartons in Tobacco Shreds Production Line
Authors: Yu Zhipeng , Mao Lihui , Zhu Bin , Qian Jie , Ying Jianming , Shen Liwei , Zhang Yuhai , Wang Junhui 
Published: January 2025

Abstract
In order to solve the problems of long manual intervention time and low automation level of the unpacking process, a set of carton automatic recovery conveyor system is designed for the carton recovery section of the unpacking process. The system mainly consists of dismantling conveyor, pallet conveyor, carton straightening device, interface conveyor, IGV trolley interface program and safety interlocking system, etc. Through this set of devices, the unpacked cartons can be automatically recovered and conveyed. Test data show that this system can reduce the manual intervention time of the unpacking process from the previous average of 73.2 min per production line to 6.1 min. The design of this system greatly reduces the consumption of human resources, improves the level of production intelligence, and effectively meets the needs of enterprises to implement intelligent manufacturing and promote the construction of intelligent factories.
Multi-stage Optimization Design of Composite Box Structure
Authors: Li Wenpeng , Li Xiang , Qin Fenqi , Guo Zhounan 
Published: January 2025

Abstract
Composite materials have the advantages of high specific strength and high specific modulus, and are widely used in aerospace, automobiles, ships and other fields. In order to carry out the lightweight design of box structure, this paper proposes a topology-size joint optimization strategy for composite structure optimization on the basis of research and analysis of topology optimization and composite material optimization related technologies, first through topology optimization to obtain the layout form of the structure, and then establish the structural model of the composite material on this basis, and optimize the size of this to obtain the optimized composite structure.
Fatigue Analysis and Optimization Design of Integrated Functional Coffee Brewing Device
Authors: Liu Guangyu 
Published: January 2025

Abstract
In recent years, with the continuous improvement of people’s quality of life, the demand for diversified beverages has been increasing, and the coffee machine market has been growing rapidly. Based on the above background and combined with the actual living conditions, a functionally integrated coffee brewing device is proposed. In this device, the integrated design is used in multiple structures to reduce the product volume, making it portable and practical, and at the same time, it can achieve full automation from cup fetching to coffee brewing process. In this paper, the pouring structure of the coffee brewing device is analyzed using ANSYS software. Taking into account the different weights of different water cups and the change of ambient temperature, the functional relationship between force load, ambient temperature, and stress deformation is established, and a high-precision response surface is constructed combined with the Kriging model to obtain the most suitable working conditions for the coffee brewing device. At the same time, the fatigue analysis of the cup bearing part in the device is carried out, and the fatigue life cloud map is obtained, which verifies the feasibility of the pouring structure.
Mechanical Design of a Fully Automatic Material Sorting Device
Authors: Wei Yuchen 
Published: January 2025

Abstract
In recent years, with the development of society, market competition has become increasingly fierce. Business in industries such as e-commerce and express delivery has exploded. The development of the logistics industry is also accelerating, and the large-scale manual assembly line work no longer meets our current needs. The demand for automation has become higher and higher. Therefore, it is especially important to design fully automatic material sorting devices according to different needs, in order to satisfy our requirements.
QFD Based Conceptual Design of Civil Aircraft Landing Gear
Authors: Zheng Bosi , Yin Huiting 
Published: January 2025

Abstract
Landing gear system plays an important role in the process of takeoff and landing, and it’s a critical part to ensure flight operation safety, thus the landing gear design occupies a crucial position in aircraft design process. The conceptual design of landing gear is the first step of whole design process, which largely determines the final design results. The application of QFD (Quality Function Deployment) method in landing gear system can build a conversion model from landing gear system requirements to technical characteristics, parts and manufacturing process. While the application of rough number can make the conversion of requirements more objective and accurate. Compared with detailed design, the conceptual design method of QFD can realize overall planning and multi-dimensional optimization. In the later design stage, according to different design requirements or parameter constraints, the optimization scheme can be obtained faster by referring to the QFD model.
Topology Optimization Design of Circular Saw Blade for Shrub Harvester
Authors: Zhang Litong , Zhang Lifu , Wang Baichao , Yuan Ziyi 
Published: January 2025

Abstract
In order to reduce the stress concentration of the circular saw blade of the shrub harvester, improve the heat dissipation effect of the circular saw blade, reduce the deformation caused by thermal expansion, and improve the service life of the circular saw blade, the paper adopts the variable density method, and uses the method of finite element simulation to optimize the topological design of the circular saw blade of the shrub harvester. Fixed constraints and dynamic loads are added in the optimization to simulate the actual working conditions, and finally the pseudo-density cloud image of the circular saw blade is obtained, and according to the obtained pseudo-density cloud, the circular saw blade is further structurally designed. The study shows that the optimized structure can improve the problem of stress concentration of circular saw blades, which plays a role in improving the life of circular saw blades.
Study of Mechanical Properties of Waste ABS and PBT Blends
Authors: Wu Haihua , Liu Yuchen , Zhang Hongyu , Zhang Bingtao , Li Yingchun 
Published: January 2025

Abstract
The mechanical properties of waste ABS (Rabs)/PBT blends were studied. rABS/PBT and rABS/PBT/MBS blends were prepared by twin-screw extrusion granulation. The effects of different contents of MBS on the mechanical properties of blends were investigated. The results showed that the notch impact strength and toughness of ABS decreased significantly after aging, and the IR test showed that carboxyl groups and other active groups were produced. The mechanical properties are best when rABS/PBT/MBS = 50/50/8. With the increase of MBS content, the impact property of rABS/PBT blends gradually improved, the tensile strength decreased, the elongation at break increased, and the bending strength decreased not significantly.
Evaluation of Measurement Uncertainty for Impact Damage of Metallic Materials
Authors: Zhang Yao 
Published: January 2025

Abstract
Metal materials are widely used in aviation, aerospace, and other fields. At present, a large part of the materials for military and civilian equipment are metal materials. The mechanical properties of metal materials can be tested to understood as the characteristics of materials more comprehensively. One of the common forms of damage to metallic materials is impact damage from low-velocity impacts. Evaluation of the impact properties of materials using a drop hammer impact tester can objectively reflect the reliability of the permissible values of the impact properties of metallic materials, which is of great significance for the design of future aircraft structures. This paper takes the mechanical properties of aluminum–lithium alloy test piece impact test as an example, according to the source of uncertainty in the test results, analyses the reasons for the introduction of uncertainty components and mathematical model, through the calculation of the synthetic uncertainty of each component to finally obtain the extended uncertainty of the impact performance test of the material, which provides a basis for the study of the performance of the aircraft materials and structural design.
Topology Optimization of Beam Structures for 2D Problems
Authors: Nie Qianyue , Nie Yulin , Nie Zhifeng 
Published: January 2025

Abstract
Topology optimization of straight beam structures is carried out, and the effects of constraints, loads, mesh density and volume fraction on topology optimization results are studied. It is observed that topology optimization results are sensitive to constraints, load conditions, and mesh density. Low volume fraction can produce the topological results of the truss structures.
Numerical Simulation of Cycloidal Propeller Performance Based on CFD
Authors: Li Qingyang , Hu Yi , Wang Fan , Cao Xudong 
Published: January 2025

Abstract
Based on the analysis of the working principle of cycloidal propeller, this paper takes the scale model of a propeller as the research object, uses Solidworks modeling software, ICEM CFD mesh generation software and FLUENT solver to model and simulate the cycloidal propeller, studies the hydrodynamic performance of this type of cycloidal propeller, and obtains the numerical simulation results close to the experiment, thus verifying the feasibility of CFD method.
Kinematics Analysis and Optimization of Stepping Rotary Three-Dimensional Braiding Machine
Authors: Ji Cheng , Chen Yizhe , Wang Hui 
Published: January 2025

Abstract
Due to its excellent performance, three-dimensional composites are an ideal choice for components in the aerospace and automotive fields. However, the need for smooth operation and productivity of current braiding equipment limits the further application of braided composites. A virtual prototype model of a 3D braiding machine is built for a stepping rotary braiding machine. The kinematic simulation is carried out using ADAMS software to analyze the operational performance of the braiding machine. Through orthogonal experimental design, the effects of different factors such as spindle fit, the gap, yarn tension, and spindle material on the operation of the braiding machine were quantified, and the optimal combination of spindle design parameters was determined based on the experimental results. The Optimization result shows that the optimized spindle operation of the braiding machine has improved by 73% compared with that before the optimization, thus improving the reliability and efficiency of the braided component forming.
Effect of Paddle Mode on Flow Characteristics of a Continuous Stirred Tank Reactor (CSTR) Using CFD Simulations
Authors: Li Peng , Wu Xuan , Cheng Fuliang , Li Xueqin 
Published: January 2025

Abstract
The efficient stirring is crucial for mixing anaerobic bacteria and substrate in a Continuous Stirred Tank Reactor (CSTR). In this study, we propose a CFD model (Large Eddy Simulation (LES) model) to simulate the reactor’s flow characteristics. The standard turbine paddle modes of the CSTR with different shafts and paddle layers were investigated using XFLOW software. The simulation results reveal that the quantity of shafts and layers has significant influences on the flow characteristics of the reactor. Both single-shaft and double-shaft paddles can provide a complete circulation loop. The mixing performance of single-shaft paddles surpasses that of double-shaft paddles. Moreover, the double layer paddles have better mixing performance than the single layer paddles. Therefore, the most favorable paddle mode for a CSTR is the single shaft paddles with double layers.
Dynamic Simulation and Vibration Analysis of Rolling Bearing with Outer Ring Defects
Authors: Ni Wenjun , Zhang Chang 
Published: January 2025

Abstract
The statement is about establishing a finite element dynamic analysis model for a rolling bearing with a pit defect on its outer ring surface. Considering the influence factors such as load, speed, contact and friction, the dynamic response of the bearing outer ring surface with pit defects is studied. The shear stress when the ball enters and leave the defect and the vibration acceleration change between the rolling element and the outer ring are analyzed. Based on the shear stress distribution and vibration response information inside the structure, the fault mechanism of high-speed bearings can be further studied, which furnish a theoretical foundation for improving maintenance and management level for such equipment.
A Study of an Impedance-Controlled Force Feedback Grasping Technique
Authors: Su Xuesong , Wang Mei , Song Huifang , Liu Jia , Wang Kaiyue , Guo Hongyuan 
Published: January 2025

Abstract
This study delves into force feedback-based grasping techniques, utilizing impedance control methods to achieve precise control over both the end-effector pose and contact force of a robotic arm. A meticulous model of the AUBO i5 robotic arm is constructed in MATLAB/Simscape Multibody, and its performance is validated through simulation. Through the configuration of three distinct sets of impedance controller parameters, a thorough analysis is conducted to discern the impact of these parameters on the efficacy of the impedance controller, leading to the identification of the three primary parameters of the impedance controller. This research contributes to a more comprehensive understanding of the role of impedance control technology in grasping applications, offering valuable insights for the optimization of robotic arm systems.
Force Simulation and Analysis of Magnetic-Assisted Docking Poles
Authors: Su Xuesong , Wang Zhigang , Sun Yongqiang , Yang Xinxin , Wang Yifei , Guo Hongyuan 
Published: January 2025

Abstract
In the context of hoisting operations for oil field pumping equipment facilities, frequent hoisting tasks are associated with the installation of borehole equipment. The prevalent approach for precise positioning during hoisting operations involves manual assistance, a practice that not only violates safety regulations but also poses significant risks of mechanical injuries. This paper introduces a magnetic-assisted docking pole designed to address safety hazards associated with manually supporting hoisted objects during hoisting operations. A finite element model is established based on relevant parameters to analyze the forces acting on the magnetic-assisted pole in its operational state. Utilizing the finite element method, stress analysis simulations are conducted to assess the maximum working stress and shear forces experienced by the entire pole and its individual components under operational conditions. Experimental results demonstrate that the maximum stress values for all components of the magnetic-assisted docking pole remain below the permissible levels defined in engineering design standards, thereby validating the structural stability and safety of the proposed system. The design of the magnetic-assisted docking pole significantly enhances on-site operational safety for workers and complies with the safety management requirements outlined by the Sinopec regarding “Hoisting Operation Safety Management”.
Numerical Analysis of Oil Flow Characteristics in Curved Pipes of Aero-Engine Lubrication System
Authors: Wang Fei , Li Yong , Zhu Zhibing , Jing Haolin 
Published: January 2025

Abstract
As an essential component connecting various parts of the lubrication system in areo-engine, the internal flow characteristics of the curved pipe play a vital role in the normal operation of areo-engine. In this paper, a geometric and mesh model of oil flow in the curved pipe are established, and the flow characteristics of oil in the curved pipe are numerically calculated using the Detached Eddy Simulation (DES) model. The influence of curved pipe angle and inlet oil velocity on the oil flow in the curved pipe is discussed separately. The results show as follows: (1) The curved pipe angle significantly affects the distribution of oil flow field in the pipe, and with the increase of curved pipe angle, significant flow separation phenomena occur in the outlet section; (2) The influence of inlet oil velocity on the distribution of oil flow field in the pipe is not significant. The results of this paper can provide reference for the design of pipelines in aero-engine lubrication system.
Numerical Simulation of Lock-In Phenomenon of Cylinder-Elastic Beam Model Based on CFD-FEM Fluid-Structure Interaction Method
Authors: Gu Yu , Gu Xiangnan , Xu Yingbo , Hong Fangwen 
Published: January 2025

Abstract
In this work, taking the fixed structure of rigid cylinder and elastic beam as the research object, the lock-in phenomena in vortex induced vibration of an elastic beam induced has been simulated based on the separated two way fluid solid interaction analysis method. The CFD method is used to calculate the flow field, and the elastic beam displacement is solved by the finite element method. The coupling is realized by transferring fluid force and structural displacement at the interface of fluid–solid domain, and the deformation updating of the euler mesh of the flow field is realized based on the dynamic mesh technology. According to the calculation results, lock-in phenomena occurs in the flow velocity range of 0.5–0.55 m/s, and the vortex shedding frequency remains unchanged and close to the second natural frequency of the elastic beam. At the velocity range, the vibration response of the free end of the elastic beam decreases with the increase of the flow velocity, which is in line with the structural resonance characteristics in the lock-in phenomena.
Dynamic Simulation of a Suspension Span Frame in a Wire Breaking Accident
Authors: Wang Peng , Xia Yang , Liu Chengzhi , Lei Qingkun , Wu Rui , Li Ting , Zhang Heng , Xiao Qingbiao 
Published: January 2025

Abstract
The suspension span frame is a structure that protects the straddled object during the construction of a transmission line. When the wire breaks, it will impact the suspension span frame. In this paper, according to the stress characteristics of the suspension span frame, a shape-finding method of the suspension span frame based on ANSYS is proposed. On the basis of determining the geometry of suspension span frame with engineering parameters, the dynamic simulation of wire impact suspension span frame is completed. The analysis results show that the shape-finding method proposed can accurately and quickly obtain the shape of the suspension span frame. The displacement and internal force of the suspended span frame under accident condition can be obtained by dynamic simulation method.
Dynamic Experimental Study of Heavy Haul Train on Mountain Railway
Authors: Chen Chunjun , Guan Junping 
Published: January 2025

Abstract
Compared with the main trunk line of heavy haul railway, the railway line in mountain area often has a larger slope and contains a large number of small radius curves, which makes the safety of train operation more threatened. Based on the actual engineering demand of a mountain railway planning to run 5000 tons heavy duty train to increase the railway capacity, a field test was carried out to test the data of wheel-rail force when train passed through. Through mathematical statistical analysis, the variation rule of each dynamic index and the running safety of each locomotive and vehicle under different running speed and curve radius are analyzed. The result of research shows that the dynamic indexes of locomotive and vehicle under different working conditions are all within the safety limit, among which the wheel load reduction rate and the vertical force of wheel and rail have a large margin compared with the safety limit, while the lateral force of wheel and the derailment coefficient have a relatively small safety margin, especially the derailment coefficient. The research results can provide data support for the smooth operation of 5000t heavy-haul train in the mountainous area.
Stability with Regard to Partial Variables of Stochastic Reaction–Diffusion Systems Driven by G-Brownian Motion
Authors: Gou Jinhao , Yang Jun , Wang Yaqian , Xu Shiqiang 
Published: January 2025

Abstract
In this article, we investigate the

$$p$$

p

-th moment exponential stability (

$$p$$

p

-th ES) of stochastic reaction–diffusion systems driven by G-Brownian motion (G-SRDSs) with respect to (w.r.t.) partial variables by utilizing the G-Lyapunov techniques and G-Itô's formula. And the sufficient conditions are established to guarantee the

$$p$$

p

-th ES of G-SRDSs w.r.t. partial variables. Additionally, a numerical simulation example is given to verify of the theoretical result.
A Fusion Modeling Method for Ball Screw Feed System of Machine Tool
Authors: Huang Dehai , Duan Jihang , Yang Jianzhong , Chen Jihong , Xu Guangda 
Published: January 2025

Abstract
The feed system is an important part of the CNC machine tool, and its performance directly affects the machining quality. Establishing an accurate model is the key to achieving feed system servo performance optimization and error compensation. In this paper, a fusion modeling method is proposed for the problems of low accuracy and difficulty in identifying stiffness and damping in the traditional lumped mass modeling method. The proposed method first establishes a rigid model without stiffness and damping, then uses a data-driven model to model the unmodeled dynamics, and finally connects the rigid model and the data-driven model in series. The method simplifies the lumped mass model, avoids the problem that the stiffness and damping are difficult to identify, and the fusion of the data-driven model significantly improves the prediction accuracy of the model. The experimental results show that the fused model has higher prediction accuracy for the frequency response characteristics and displacement of the feed system.