Zhiwen Lu
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Zhiwen Lu has a total of 13 co-authors. Here are the top co-authors by number of shared publications:
B. Larry Li
International Joint Laboratory of Watershed Ecological Security for Water Source Region of Middle Route Project of South-North Water Diversion in Henan Province, College of South to North Diversion / College of Water Resource and Modern Agriculture, Nanyang Normal University, Nanyang, Henan, 473061, China; Department of Botany and Plant Sciences, University of California, Riverside, CA, 92521, USA
1 shared publication- Junfang Shen
School of Intelligent Manufacturing, Luoyang Institute of Science and Technology, Luoyang 471023, China
1 shared publication Mengyao Wu
International Joint Laboratory of Watershed Ecological Security for Water Source Region of Middle Route Project of South-North Water Diversion in Henan Province, College of South to North Diversion / College of Water Resource and Modern Agriculture, Nanyang Normal University, Nanyang, Henan, 473061, China
1 shared publicationMengzhao Jia
International Joint Laboratory of Watershed Ecological Security for Water Source Region of Middle Route Project of South-North Water Diversion in Henan Province, College of South to North Diversion / College of Water Resource and Modern Agriculture, Nanyang Normal University, Nanyang, Henan, 473061, China
1 shared publicationMinghao Song
International Joint Laboratory of Watershed Ecological Security for Water Source Region of Middle Route Project of South-North Water Diversion in Henan Province, College of South to North Diversion / College of Water Resource and Modern Agriculture, Nanyang Normal University, Nanyang, Henan, 473061, China
1 shared publicationMingming Gao
International Joint Laboratory of Watershed Ecological Security for Water Source Region of Middle Route Project of South-North Water Diversion in Henan Province, College of South to North Diversion / College of Water Resource and Modern Agriculture, Nanyang Normal University, Nanyang, Henan, 473061, China
1 shared publication
Latest Publications
- Open Access
Mechanical Analysis and Verification Research on Asymmetric Four-Point Bending for the JCO Forming Process of LSAW Pipes
Large-diameter longitudinal submerged arc welded (LSAW) pipes represent a critical component of long-distance oil and gas transmission pipelines. To enhance the forming efficiency of the JCO (J-shape to C-shape to O-shape) forming process for LSAW pipes, and to reduce residual straight segment in order to minimize the ovality of the formed pipes, an asymmetric four-point air bending (AFB) process was proposed. In this process, one end of the sheet contacts the dies with a straight segment, while the other end contacts a circular arc segment. The distribution of bending moments and mechanical model under different bending stages were analyzed, and analytical formulas for the main forming indexes before and after springback were derived. Experimental and finite element simulation verification were conducted for the AFB process. The results indicated that the error between the experimental and simulation results and the theoretical results was small, and the variation trends were consistent. Furthermore, the ellipticity of the pipes formed by the AFB process was less than 0.66%, which is obviously lower than that of the pipe formed by the symmetric four-point air bending (SFB) process. The forming quality and production efficiency of the pipe is improved, thereby proving the feasibility and reliability of the AFB process and promoting the development of LSAW pipe JCO forming processes.
Open AccessMechanical Analysis and Verification Research on Asymmetric Four-Point Bending for the JCO Forming Process of LSAW Pipes
Large-diameter longitudinal submerged arc welded (LSAW) pipes represent a critical component of long-distance oil and gas transmission pipelines. To enhance the forming efficiency of the JCO (J-shape to C-shape to O-shape) forming process for LSAW pipes, and to reduce residual straight segment in order to minimize the ovality of the formed pipes, an asymmetric four-point air bending (AFB) process was proposed. In this process, one end of the sheet contacts the dies with a straight segment, while the other end contacts a circular arc segment. The distribution of bending moments and mechanical model under different bending stages were analyzed, and analytical formulas for the main forming indexes before and after springback were derived. Experimental and finite element simulation verification were conducted for the AFB process. The results indicated that the error between the experimental and simulation results and the theoretical results was small, and the variation trends were consistent. Furthermore, the ellipticity of the pipes formed by the AFB process was less than 0.66%, which is obviously lower than that of the pipe formed by the symmetric four-point air bending (SFB) process. The forming quality and production efficiency of the pipe is improved, thereby proving the feasibility and reliability of the AFB process and promoting the development of LSAW pipe JCO forming processes.
- 30 September 2025
- Published by Elsevier in Environmental Research
- Vol. 286 (Pt 3) , 122983
Algal community can alter the role of a drinking water Reservoir as a CO2 source or sink at different seasons
- 30 September 2025
- Published by Elsevier in Environmental Research
- Vol. 286 (Pt 3) , 122983
Algal community can alter the role of a drinking water Reservoir as a CO2 source or sink at different seasons