Article
Engineering, Mechanical
Yongjie Ma, Guang Cheng, Erbiao Jiang
Summary: This study optimized the material parameters of nickel-based GH4169 alloy using the residual stress-based finite element updating method, successfully predicted the broaching force, and effectively controlled the influence of cutting parameters on the broaching force distribution design, which helps to ensure the dimensional accuracy and reliability of the aero-engine turbine disc.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
(2022)
Article
Automation & Control Systems
Xueguang Li, Yahui Wang, Ke Guo, Liqin Miao
Summary: This study simulated the continuous milling process of Inconel718 using ABAQUS software, discussing issues such as model establishment, material parameters, and meshing techniques during milling. It was found that the heat generated during milling increased with rotational speed, primarily transferring to chips and workpiece rather than the tool. The temperature distribution on the cutting tool changed in a gradient during milling, with the tool temperature lower than that of the workpiece.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Automation & Control Systems
Tao Zhu, Ming Cai, Yadong Gong, Xingjun Gao, Ning Yu, Xiang Li
Summary: In this study, a 3D finite element simulation model was constructed to investigate the effect of the cutting depth on the chip morphology and segmentation frequency during the grinding process of nickel-based superalloy GH4169. Experimental results confirmed the simulation results, indicating that the grinding speed has a significant impact on the chip morphology.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Engineering, Mechanical
Baobin Xie, Li Li, Qihong Fang, Jia Li, Bin Liu, Zaiwang Huang, Liming Tan
Summary: Residual stresses generated by various preparative techniques can greatly affect the mechanical properties in Ni-based superalloy parts. Research shows that grain growth and local movement of grain boundaries can lead to stress relaxation and reduce residual stress. An analytical theoretical model is proposed to evaluate the trend of residual stress variation with annealing temperature, showing that residual stress decreases with increasing annealing temperature.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2021)
Article
Engineering, Mechanical
Alessia Greco, Emanuele Sgambitterra, Franco Furgiuele
Summary: This paper proposes a new methodology based on nanoindentation to estimate the magnitude and orientation of principal residual stress components in a non-equi-biaxial residual stress field at the nanoscale. By using a modified Berkovich tip, the method can estimate non-equibiaxial residual stress fields without the need to observe residual imprints. Theoretical and finite element analysis are used to establish a linear relationship between stress components and load variations, with results showing an average error lower than 6% for tensile residual stresses and lower than 10% for compressive residual stresses.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2021)
Article
Chemistry, Physical
Michaela Stamborska, Juraj Lapin, Kateryna Kamyshnykova
Summary: The preparation, microstructure, and mechanical behaviour of Ni3Al-based superalloy were studied. It was found that the heat-treated alloy had a uniform distribution of MC carbides and γ'(Ni3Al) precipitates. The equivalent plastic strain distribution was calculated using finite element analysis, and a correlation curve between Vickers microhardness values and equivalent plastic strains was proposed to quantify the local strain hardening state.
Article
Engineering, Manufacturing
Xufei Lu, Chao Chen, Guohao Zhang, Michele Chiumenti, Miguel Cervera, Haoliang Yin, Liang Ma, Xin Lin
Summary: Laser powder bed fusion (LPBF) additive manufacturing (AM) generates residual stresses, which can be reduced through annealing heat treatment (HT). This study investigates the effect of different HT conditions on the residual stresses and warpage of LPBF-fabricated components through experimentation and numerical simulation, and establishes a roadmap for selecting optimal annealing parameters.
ADDITIVE MANUFACTURING
(2023)
Article
Materials Science, Multidisciplinary
Rui Wang, Hao Jiang, Wenzhu Shao, Shuxin Yang, Xueyin Sun, Jian Cao, Liang Zhen
Summary: This article establishes a finite element method (FEM) combined with subroutines to trace the evolution of stresses in M50 steel during quenching. The constitutive relationship and thermal physical properties of M50 steel were tested and integrated into the model. The finite element analysis accurately predicts the residual stresses induced by high-velocity nitrogen (HNQ) in the M50 steel bulk considering thermal stresses and martensitic phase transformation. The simulation results show that the residual stresses in M50 steel are compressive at the surface, tensile at the center, and very strong at the edges. The evolution of stress is jointly driven by thermal stress and phase transformation stress.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
Jin Zheng, Yaoman Zhang, Hanying Qiao
Summary: This paper focuses on the milling process of nickel-based superalloy Inconel 718, establishing a milling force model and using finite element analysis to analyze the stress field, temperature field, and milling force in the process. The results of the milling force model and finite element analysis are verified through milling experiments and the fmincon optimization algorithm is applied to optimize the processing parameters of Inconel 718. The results of the multi-objective optimization indicate that the best processing parameters are a spindle speed of 3199.2 rpm and a feed speed of 80 mm/min with an axial depth of cut of 0.25 mm, improving the machining efficiency and quality of Inconel 718.
Article
Engineering, Multidisciplinary
JunFeng Xiao, Feng Guo, Chen Zhang, Xiao Chen, JianGuo Zhang, JianFeng Xu
Summary: The study shows that magnetic field assistance can significantly improve the cutting performance of nickel-based superalloy, including improving chip morphology, reducing cutting force oscillation, improving surface quality, reducing the concavity-convexity of the machined surface's fan-shaped area, and improving hardness and ductility.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2022)
Article
Computer Science, Interdisciplinary Applications
Seong Pil Byeon, Doo Yong Lee
Summary: This study proposes a method to reduce the computational burden of cutting soft tissue simulation by approximating the gap between model boundaries and finite elements. By introducing partial elements for compensation, the proposed method shows significant advantages in simulation accuracy and computational efficiency.
COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE
(2021)
Article
Engineering, Civil
Y. D. Chen, J. Y. Hua, D. Fan, Q. Liu, Y. G. Lu, T. Liu, Y. Cai
Summary: Understanding the ballistic behavior of structural materials is crucial for their applications in aeronautical and astronautical industries. In this study, the perforation process of 2-mm thick Inconel 718 superalloy plates by spherical stainless steel 304 projectiles at different impact velocities was investigated using high-speed photography. The results revealed that grain refinement and shear banding were the main microstructural deformation modes near the bullet holes, and shear dominated deformation and tension-shear dominated deformation occurred sequentially in the bullet hole along the impact direction.
THIN-WALLED STRUCTURES
(2023)
Article
Chemistry, Physical
Meng Wang, Xiaochen Hang
Summary: New finite element analysis procedures are developed to accurately determine the stress distribution patterns in prestressed composites. The modified procedures consider the effects of polymer curing, prestress application, and interphases' properties. Results indicate that an increase in prestress levels can lead to interphase debonding, while enhanced elastic modulus or coefficient of thermal expansion in interphases results in higher circumferential and axial stress values. Heterogeneous elastic modulus leads to significant stress gradients in the interphase.
Article
Engineering, Civil
Zhe Zhang, Dong Liu, Tongchi Man, Nan Li, Yanhui Yang, Yuhua Pang, Jianguo Wang
Summary: The study investigates the central cracking phenomenon during the preparation of nickel-based superalloy tubes using the rotary tube piercing process. By combining numerical analysis and experimental verification, the critical parameters for central cracking are determined through experiments. The evolution process of central cracking is discussed through numerical simulation, and the Normalized Cockcroft and Latham (NCL) model is determined as the most suitable model. The essence of central cracking is identified as ductile fracture under tensile stress.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2022)
Article
Polymer Science
Chenglong Guan, Lihua Zhan, Shunming Yao
Summary: This study developed an octagonal microwave heating device with adjustable uniformity, through numerical analysis and finite element simulation. Experimental results showed that the carbon fiber composite laminates cured in this device had a more uniform temperature distribution, a more synchronous curing process, and lower residual stresses.