Enhancing EUV mask blanks usability through smart shift and blank-design pairing optimization

2016 ◽  
Author(s):  
Rakesh Kumar Soni ◽  
Sankaranarayanan Paninjath ◽  
Mark Pereira ◽  
Peter Buck ◽  
Peter Thwaite
Keyword(s):  
Blank Design

scholarly journals Research on Blank Optimization Design Based on Low-Carbon and Low-Cost Blank Process Route Optimization Model

2021 ◽  
Vol 13 (4) ◽  
pp. 1929
Author(s):  
Yongmao Xiao ◽  
Wei Yan ◽  
Ruping Wang ◽  
Zhigang Jiang ◽  
Ying Liu
Keyword(s):  
Optimization Model ◽  
Optimization Design ◽  
Design Method ◽  
Low Cost ◽  
Route Optimization ◽  
Low Carbon ◽  
Multi Objective Optimization ◽  
Multi Objective ◽  
Blank Design ◽  
Process Route

The optimization of blank design is the key to the implementation of a green innovation strategy. The process of blank design determines more than 80% of resource consumption and environmental emissions during the blank processing. Unfortunately, the traditional blank design method based on function and quality is not suitable for today’s sustainable development concept. In order to solve this problem, a research method of blank design optimization based on a low-carbon and low-cost process route optimization is proposed. Aiming at the processing characteristics of complex box type blank parts, the concept of the workstep element is proposed to represent the characteristics of machining parts, a low-carbon and low-cost multi-objective optimization model is established, and relevant constraints are set up. In addition, an intelligent generation algorithm of a working step chain is proposed, and combined with a particle swarm optimization algorithm to solve the optimization model. Finally, the feasibility and practicability of the method are verified by taking the processing of the blank of an emulsion box as an example. The data comparison shows that the comprehensive performance of the low-carbon and low-cost multi-objective optimization is the best, which meets the requirements of low-carbon processing, low-cost, and sustainable production.

Modeling and Simulation of Optimal Blank Design and Hot Pressing Process for Manufacturing Large Francis Turbines Blades From Very Thick Plates

2013 ◽  
Author(s):  
Zhengkun Feng ◽  
Henri Champliaud ◽  
Louis Mathieu ◽  
Michel Sabourin
Keyword(s):  
Hot Pressing ◽  
Three Dimensional ◽  
High Strength ◽  
Production Costs ◽  
Francis Turbine ◽  
Thick Plates ◽  
Pressing Process ◽  
Blank Design ◽  
Cost Of Energy ◽  
Applied Forces

Hot pressing process is widely used in automotive, shipbuilding, energy production and civil engineering. However, the trial and error technique that is intensive time and energy consuming is still used. Particularly, the design of Francis turbines of hydropower plants is not standard, but variable from site to site due to hydraulic conditions and cost of energy. As a result, the blade hydraulic profile of each Francis turbine is different. The blades, one of the key components of Francis turbine runners, are produced in small batches and the setup of the dedicated punch and die increases significantly the unit production costs. In this paper, the blade unfolding process for optimal blank design will be firstly presented, and then a hot pressing process for very thick plates is proposed. The pressing process of high strength steel at hot temperature is characterized by thermo-mechanical behaviors, three-dimensional unsteady deformation, high nonlinearity, continuous local forming. The analyses of residual stress distribution and applied forces are carried out.

Ring blank design and its effect on combined radial and axial ring rolling

2014 ◽  
Vol 72 (9-12) ◽  
pp. 1161-1173 ◽  
Author(s):  
Xinghui Han ◽  
Lin Hua ◽  
Xiaokai Wang ◽  
Guanghua Zhou ◽  
Bohan Lu
Keyword(s):  
Ring Rolling ◽  
Blank Design ◽  
Axial Ring ◽  
Ring Blank

Blank design optimisation for T-section ring rolling

2009 ◽  
Vol 36 (6) ◽  
pp. 462-469 ◽  
Author(s):  
D.-S. Qian ◽  
L. Hua ◽  
L.-B. Pan
Keyword(s):  
Ring Rolling ◽  
Design Optimisation ◽  
Blank Design

Optimal Blank Design for the Drawings of Arbitrary Shapes by the Sensitivity Method

2000 ◽  
Vol 123 (4) ◽  
pp. 468-475 ◽  
Author(s):  
H. B. Shim ◽  
K. C. Son
Keyword(s):  
Shape Sensitivity ◽  
Initial Blank ◽  
Blank Design ◽  
Door Panel ◽  
Explicit Analysis ◽  
Simulation And Experiment ◽  
Deformation Processes ◽  
Final Deformation ◽  
Blank Shape ◽  
Sensitivity Method

The sensitivity method is employed in this work in order to find initial blank shapes which result in desired shapes after deformation. By assuming the final deformation shape be the drawn cup with uniform trimming allowance at the flange, the corresponding initial blank which gives the desired final shape after deformation has been found. With the aid of a well-known dynamic explicit analysis code PAM-STAMP, shape sensitivity has been obtained. To get the shape sensitivity numerically, a couple of deformation processes have been analyzed. Drawings of trapezoidal cup, oil pan, and Audi front door panel, the benchmark test problem of Numisheet ’99, have been chosen as the examples. In every case the optimal blank shape has been obtained after only a few modifications without a predetermined deformation path. With the predicted optimal blank, both computer simulation and experiment are performed. Excellent agreements are obtained between simulation and experiment in every case. Through this investigation, the sensitivity method is found to be very effective in the design of arbitrary shaped drawing processes.

Research on the Blank Design Method of Closed Rolling the High-Neck Flange

2011 ◽  
Vol 314-316 ◽  
pp. 594-598
Author(s):  
Min Xiao ◽  
Xue Dao Shu
Keyword(s):  
Numerical Simulation ◽  
Mathematical Model ◽  
Design Method ◽  
Scientific Basis ◽  
Shape Design ◽  
Blank Design ◽  
Rolling Method ◽  
Blank Shape ◽  
Blank Size ◽  
The Mathematical Model

Blank shape design is the prerequisite and foundation of optimization for the closed forming the high-neck flange. This paper obtained the design formulas of blank size with analyzing the mathematical model of flank blank based on the principle of volume invariably during the rolling process.The blank of a special flange was designed by this method which was validated by the numerical simulation under the DEFORM software. The results indicate that the product is qualified with the blank shape based on this method. These research conclusions can provide scientific basis for forming the high-neck flange with rolling method.

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