Two-stage and multi-stage decompositions for the medium-term hydrothermal scheduling problem: A computational comparison of solution techniques

2021 ◽  
Vol 127 ◽  
pp. 106659
Author(s):  
F. Beltrán ◽  
E.C. Finardi ◽  
W. de Oliveira
Keyword(s):  
Scheduling Problem ◽  
Medium Term ◽  
Two Stage ◽  
Hydrothermal Scheduling ◽  
Multi Stage ◽  
Computational Comparison ◽  
Solution Techniques

Application of Scenario Tree Reduction Via Quadratic Process to Medium-Term Hydrothermal Scheduling Problem

2017 ◽  
Vol 32 (6) ◽  
pp. 4351-4361 ◽  
Author(s):  
Felipe Beltran ◽  
Welington de Oliveira ◽  
Erlon Cristian Finardi
Keyword(s):  
Scenario Tree ◽  
Scheduling Problem ◽  
Medium Term ◽  
Hydrothermal Scheduling

scholarly journals Generalized optimizations of two-stage forging of micro/meso copper fastener

2018 ◽  
Vol 185 ◽  
pp. 00002
Author(s):  
Shih-Hsien Lin ◽  
Un-Chin Chai ◽  
Gow-Yi Tzou ◽  
Dyi-Cheng Chen
Keyword(s):  
Simulation Analysis ◽  
Effective Strain ◽  
Cold Forging ◽  
Two Stage ◽  
Forming Simulation ◽  
Multi Stage ◽  
Element Simulation ◽  
Die Stress ◽  
Stress Optimization ◽  
Forging Force

Three are generalized simulation optimizations considering the forging force, the die stress, and the dual-goals in two-stage forging of micro/meso copper fastener. Constant shear friction between the dies and workpiece is assumed to perform multi-stage cold forging forming simulation analysis, and the Taguchi method with the finite element simulation has been used for mold-and-dies parameters design simulation optimizations considering the forging force, die stress, and dual-goals. The die stress optimization is used to explore the effects on effective stress, effective strain, velocity field, die stress, forging force, and shape of product. The influence rank to forging process of micro/meso copper fastener for three optimizations can be determined, and the optimal parameters assembly consider die stress can be obtained in this study. It is noted that the punch design innovation can reduce the forging force and die stress.

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