Article
Chemistry, Physical
Yaohui Zheng, Pengcheng Hu, Minghai Wang, Xiaoyue Huang
Summary: In this study, an analytical model is proposed to predict the residual stress and machining deformation in aerospace thin-walled components during the machining process. The model is validated through finite element simulations and experiments. The results show that under uneven milling conditions, the analytical model can accurately predict the distribution of residual stress and machining deformation within the workpiece. Additionally, the uneven distribution of bending stress exacerbates the overall machining deformation.
Article
Automation & Control Systems
Mohammad Reza Naghdi Sedeh, Abbas Ghaei
Summary: Hybrid machining-forming technology combines thin-structural machining and incremental forming processes to manufacture complex geometry parts. While this technology reduces raw material usage, it faces dimensional and geometric inaccuracies due to springback. Research shows that cutting parameters and residual stresses affect springback, with machining feed rate impacting workpiece fracture during the forming stage.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Engineering, Industrial
Zhitao Chen, Caixu Yue, Yongshi Xu, Xianli Liu, Steven Y. Liang
Summary: This study focuses on the prediction and control of deformation in multi-frame components, with residual stress being the main influencing factor. An analytical prediction model is developed based on the equivalent bending stiffness theory, which also considers the initial residual stress. The study further investigates the influence of stress redistribution and stress balance on deformation during material removal, establishing a functional relationship between them. Experimental and finite element simulation results confirm the accuracy of the proposed model. Additionally, the effects of different processing techniques and environments on deformation and surface roughness are analyzed, providing theoretical support for predicting deformation in complex structure workpieces.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Zhao Wang, Zhirong Liao, Dragos Axinte, Xin Dong, Dongdong Xu, Giedrius Augustinavicius
Summary: Abrasive waterjet peening (AWJP) is a new mechanical surface treatment technique that uses waterjet-delivered particles to induce plastic deformation and strengthen the surface of a workpiece. The prediction of residual stress distribution is challenging due to the random, superposition, and overlapping nature of particle-workpiece interaction. The proposed theoretical model analyses various factors to predict workpiece plastic deformation and compressive residual stress, providing insights for industrial manufacturing optimization.
MATERIALS & DESIGN
(2021)
Article
Engineering, Multidisciplinary
Wei Liu, Mikhail Guzev, Chengzhi Qi
Summary: In this paper, we introduced the Airy stress function in the non-Euclidean model of a continuous medium, which leads to an inhomogeneous biharmonic equation for studying the incompatibility of deformations. The internal stresses are shown to be composed of elastic stresses and stresses determined by the incompatibility of deformations. The theoretical results obtained are used to analyze experimental data on residual stresses.
APPLIED MATHEMATICAL MODELLING
(2021)
Article
Chemistry, Physical
Yang Li, Ya-Nan Li, Xi-Wu Li, Kai Zhu, Yong-An Zhang, Zhi-Hui Li, Hong-Wei Yan, Kai Wen
Summary: The effects of material removal strategies and initial stress states on the machining deformation of aluminum alloy plates were investigated. Different machining strategies were developed, resulting in significantly different levels of machining deformation. The asymmetric initial stress state had a significant impact on the machining deformation of thick plates. The modeling results for the stress state and machining deformation were accurate and in good accordance with the experimental findings.
Article
Engineering, Manufacturing
Jiamin Sun, Klaus Dilger
Summary: Generally, as-received steel components before welding undergo various manufacturing processes, leading to the presence of initial residual stresses (IRS). The relationship between IRS and welding residual stresses (WRS) is still unclear, particularly in ultra-high strength steels (UHSS). This study aims to investigate the influence of IRS on WRS in ultra-high strength steel S960 using X-ray diffraction (XRD) measurements. The results indicate that IRS in the weld area are completely eliminated and have no impact on WRS due to the metallurgical and mechanical melting effect. In the heated zone outside the weld area, the initial longitudinal residual stress (σLRS) affects WRS significantly only when it is in tension. In the cold area, WRS are a combination of IRS and welding-induced residual stresses (WIRS), with IRS playing the dominant role in general and having minimal impact on WRS in the weld area.
JOURNAL OF MANUFACTURING PROCESSES
(2023)
Article
Engineering, Industrial
Aditya Nagaraj, Sangkee Min
Summary: This study investigates the anisotropy in residual stresses resulting from ultra-precision machining of sapphire using micro-Raman spectroscopy and improves our understanding of plastic deformation and its contribution to residual stress through an analytical model.
CIRP ANNALS-MANUFACTURING TECHNOLOGY
(2022)
Article
Engineering, Industrial
Hugo Chabeauti, Mathieu Ritou, Bruno Lavisse, Guenael Germain, Virginie Charbonnier
Summary: This paper proposes an original hybrid digital twin model for forged parts to manage the variability of residual stress and reduce post-machining distortion. The model combines reduced models of thermomechanical simulations, online measurements, and machine learning to predict part deformations and simulate adaptive machining solutions. The approach has been validated on a series of aeronautic forged parts.
CIRP ANNALS-MANUFACTURING TECHNOLOGY
(2023)
Article
Engineering, Mechanical
Ritin Mathews, Sumair Sunny, Arif Malik, Jeremiah Halley
Summary: This study investigates the coupling of inherent residual stress and machining-induced residual stress on the final-state of residual stress and distortion during high-speed machining of high aspect-ratio aluminum components. The results show that the interaction between IRS and MIRS is nonlinear in nature, varies according to the component and location of stress, and significantly influences the final part distortion.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Engineering, Manufacturing
Seyyed Mohammad Nikouei, Mohammad Reza Razfar, Mohsen Khajehzadeh
Summary: The research found that changing the size and concentration of particles in nanofluids can significantly affect the residual stresses in the cutting process of Inconel 718. Using TiO2 nanofluid can reduce residual stresses, but increasing particle size weakens the effect of stress reduction.
MATERIALS AND MANUFACTURING PROCESSES
(2022)
Article
Optics
Haohao Zeng, Xiangtao Hu, Dong Yang
Summary: Laser-assisted milling (LAM) is a promising method for machining hard-to-cut materials. This study presents an analytical model to predict the residual stress distribution in the LAM process. The model considers the material softening behavior caused by laser heating and its effect on distributed loads and mechanical stresses. LAM experiments are performed to verify the model, and the findings suggest a moderate feed rate for higher surface compressive residual stresses.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Engineering, Mechanical
Jingyi Zhao, Yalin Dong, Chang Ye
Summary: In this study, a fast and robust analytical model based on Hertzian contact theory and Neuber?s plasticity law was developed to predict residual stress generated by UNSM. Sensitivity studies and linear regression analysis were conducted to investigate the effects of UNSM parameters on residual stress distribution and surface finish. The study highlights the importance of balancing residual stress and surface finish when choosing UNSM parameters and introduces an experimental design to find optimal parameters for different engineering needs.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2021)
Article
Engineering, Mechanical
Xin Li, Jingyi Zhao, Yixuan Ye, Ziheng Xu, Gang Liu, Xuekun Luo, Xin Wang, Yalin Dong, Tao Huang, Chang Ye, Han Ding
Summary: An analytical model based on Hertzian contact theory and the Neuber plasticity rule is proposed to predict residual stresses generated by laser shock peening (LSP). The model is validated using experimental data. By establishing a database connecting LSP parameters with residual stress, the effects of LSP parameters on residual stress distribution can be studied and optimal LSP parameters for desired residual stress characteristics can be obtained. This multi-objective optimization method is expected to guide LSP experiments effectively.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Engineering, Multidisciplinary
Ming Zhang, Haofei Liu, Zongxi Cai, Cuiru Sun, Wei Sun
Summary: This study improved analytical methods for estimating residual stress in the aorta by addressing the limitations related to residual deformations, load-free conditions, and mismatches in residual stretch. The proposed method showed tensile residual stresses in both circumferential and axial directions in the media, contrasting with other methods. The method also demonstrated significant influences of axial residual stretch and opening angles on residual stress and in vivo stress distribution.
APPLIED MATHEMATICAL MODELLING
(2021)
Article
Engineering, Mechanical
Hanjun Gao, Jianfei Sun, Wuyi Chen, Yidu Zhang, Qiong Wu
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
(2018)
Article
Materials Science, Multidisciplinary
Han-Jun Gao, Yi-Du Zhang, Qiong Wu, Jing Song
Article
Engineering, Mechanical
Hanjun Gao, Yidu Zhang, Qiong Wu, Jing Song, Kai Wen
INTERNATIONAL JOURNAL OF FATIGUE
(2018)
Article
Automation & Control Systems
Nian-Pu Xue, Qiong Wu, Rui-Sheng Yang, Han-Jun Gao, Zhang Zhang, Yi-Du Zhang, Lei Li, Jing Guo
Summary: Aluminum alloys are widely used in aerospace products due to their high specific stiffness and high specific strength. In the machining process of thin-walled aluminum ring workpieces, the stiffness of the parts decreases and the residual stress is released, resulting in noticeable machining deformation. A new theoretical analysis model and finite element model are established to analyze the distribution of initial residual stress and the law of machining deformation. The accuracy of simulation results is verified by experiments, while the theoretical analytical model explains the deformation qualitatively. The residual stress of the rolled ring is about 40 to 80 MPa, leading to a maximum deformation of 0.4016 mm and an elliptical cross-section.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Proceedings Paper
Energy & Fuels
Wenbing Zhou, Yidu Zhang, Qiong Wu, Hanjun Gao
ADVANCES IN ENERGY SCIENCE AND ENVIRONMENT ENGINEERING
(2017)
Proceedings Paper
Energy & Fuels
Hanjun Gao, Yidu Zhang, Qiong Wu, Chang Liu
ADVANCES IN ENERGY SCIENCE AND ENVIRONMENT ENGINEERING
(2017)
Proceedings Paper
Energy & Fuels
Chang Liu, Yidu Zhang, Qiong Wu, Hanjun Gao
ADVANCES IN ENERGY SCIENCE AND ENVIRONMENT ENGINEERING
(2017)
Proceedings Paper
Automation & Control Systems
Jialin Li, Yidu Zhang, Qiong Wu, Hanjun Gao
MECHANISM AND MACHINE SCIENCE
(2017)
