Article
Automation & Control Systems
Ce Liang, Yadan Luo, Jicai Liang, Yi Li
Summary: This paper investigates the springback issue in multi-point stretch bending and establishes an analytical model for the relationship between springback error and stress. A springback prediction model is proposed and it shows more reliable prediction results compared to the traditional model under different bending radii. Furthermore, the secant method is used to calculate the springback compensation factor to control the springback error within an acceptable range for the profile.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Engineering, Manufacturing
J. Ma, T. Welo
Summary: Stretch bending is commonly used for fabricating complex profiles, but controlling springback remains a challenge. This study introduces a novel stretching-controlled bending process and develops a Full Moment analytical model for accurate springback assessment. Experimental validation demonstrates high capability for controlling springback and dimensional accuracy.
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE
(2021)
Article
Automation & Control Systems
Chuandong Chen, Jicai Liang, Yi Li, Ce Liang
Summary: Flexible stretch-bending of multi-point roller dies technology is a new three-dimensional forming technology that reduces die cost and improves production efficiency. This study focused on the effect of die arrangement on T-profile and L-profile, and found that the length of the non-contact area significantly influences the three-dimensional deformation of the profiles.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Chuandong Chen, Jicai Liang, Yi Li, Ce Liang, Wenming Jin
Summary: This study investigated the influence of process parameters on springback in plastic forming processes, using numerical simulation and experimental verification to determine the springback law. By optimizing process parameters, large-scale production of the Y-profile was successfully achieved.
Article
Engineering, Chemical
Sergei Alexandrov, Marina Rynkovskaya, Yeong-Maw Hwang
Summary: This paper focuses on the design of plane-strain bending of wide sheets based on ideal flow theory to control the loading path and achieve the desired sheet shape. The method combines rigid plastic and elastic solutions, resulting in a practically analytical design solution.
Article
Materials Science, Characterization & Testing
Imene Abdedaim, Elhadj Ouakdi, Rachid Louahdi, Ahmed Maati
Summary: This article investigates the phenomenon of springback in uncoated and coated steel samples, considering factors such as coating thickness, surface roughness, punch depth, blank holding force, and yield strength. The study demonstrates that the springback angle is smaller for uncoated sheets, higher blank holding force, higher surface roughness, lower coating thickness, lower stretching height, and lower yield strength.
Article
Multidisciplinary Sciences
Ruixue Zhai, Zhuangkun Zhao, Jianhao Yang, Bangbang Ma, Gaochao Yu
Summary: The text introduces pre-stretching and post-bending as the simplest loading methods for the profile stretch-bending technical process, proposing a new proportional kinematic hardening model. The stretch-bending mechanical model was analyzed for stress and strain on profile cross sections, with experimental results validating its accuracy.
Article
Automation & Control Systems
Chuandong Chen, Jicai Liang, Fei Teng, Yi Li, Ce Liang
Summary: The paper introduces a springback compensation method based on variable compensation factor to accelerate iterative compensation convergence and effectively divide and optimize the springback compensation process of the workpiece, improving compensation accuracy.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Qingshun Kong, Zhonghua Yu
Summary: This study proposes a dynamic evaluation method considering time-dependent springback in the bending-straightening process. The GA-BP neural network model is used to predict springback, and it shows lower prediction error compared to the linear regression model. Experimental results confirm the effectiveness of the proposed method.
Article
Materials Science, Multidisciplinary
Yanmin Zhang, Shanguang Li, Kexing Song, Yanjun Zhou, Fei Zhou, Longlong Lu, Aikui Liu
Summary: Stretch-bending straightening is an effective method for controlling the internal residual stress of a strip. The study used TEM and EBSD techniques to investigate the evolutions of dislocation and grain orientation during the bending straightening process of alloy strips, and explored the influence mechanism of stretch-bending straightening on the residual stress of strips. The results showed that the material strength increased and the residual stress levels decreased under specific tension force.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Engineering, Manufacturing
Chuandong Chen, Jicai Liang, Yi Li, Ce Liang
Summary: The movement track of the clamp greatly affects the forming effect of the workpiece, with different implications for shape error between double-sided and one-sided forming methods. However, the thickness change is less influenced by the different movement tracks.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL OF ENGINEERING MANUFACTURE
(2022)
Article
Metallurgy & Metallurgical Engineering
Qingdang Meng, Gaochao Yu, Xueying Huang, Honglei Sun, Jun Zhao
Summary: This study proposes a novel method for metal profile straightening using reciprocating bending, which unifies curvature through multiple reciprocating bends to achieve high straightening efficiency. Experimental results validate the feasibility of the method and demonstrate the impact of the elastic area ratio on curve unification effects.
METALLURGICAL RESEARCH & TECHNOLOGY
(2021)
Article
Engineering, Manufacturing
Rui Ma, Chao Ma, Ruixue Zhai, Jun Zhao
Summary: This paper proposes a compensation mechanism based on the iterative principle of implicit equation for springback control, which can achieve convergence between the springback shape and the target shape through finite compensation and iterative methods. Experimental results show that this method can predict the next compensation value, with fast error convergence and theoretical significance and practical value.
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING
(2022)
Article
Engineering, Manufacturing
Song Gao, Tonggui He, Qihan Li, Yingli Sun, Jicai Liang
Summary: This study investigated the springback behaviors of AA6082 aluminum profiles using the 3D FSB process, establishing a method for analyzing and predicting springback during the forming process, which provides important reference for achieving high-efficiency and high-quality forming of 3D stretch-bending parts.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL OF ENGINEERING MANUFACTURE
(2022)
Article
Engineering, Manufacturing
Song Gao, Yingli Sun, Qihan Li, Tonggui He, Jicai Liang
Summary: This paper proposes a new type of multi-points 3D stretch-press-bending (3D SPB) process to improve the aerodynamic performance of high-end equipment. Through experiments and numerical simulations, this process achieves complex bending for multi-directional curvature radius, increasing material utilization and production efficiency.
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING
(2022)