An Optimal Design Method in First Order analysis : Shape optimization based on the response surface methodology

2001 ◽  
Vol 2001.10 (0) ◽  
pp. 128-129
Author(s):  
Tatsuyuki AMAGO ◽  
Hidekazu NISHIGAKI ◽  
Shinji NISHIWAKI ◽  
Yoshio KOJIMA ◽  
Noboru KIKUCHI
Keyword(s):  
Response Surface Methodology ◽  
Optimal Design ◽  
Shape Optimization ◽  
Response Surface ◽  
Design Method ◽  
Order Analysis ◽  
First Order ◽  
Optimal Design Method

An Optimal Design Method in First Order Analysis : Topology Optimization Based on Beam and Panel Elements

2001 ◽  
Vol 2001.10 (0) ◽  
pp. 118-121
Author(s):  
Shinji Nishiwaki ◽  
Hidekazu Nishigaki ◽  
Yasuaki Tsurumi ◽  
Yoshio Kojima ◽  
Noboru Kikuchi
Keyword(s):  
Topology Optimization ◽  
Optimal Design ◽  
Design Method ◽  
Order Analysis ◽  
First Order ◽  
Optimal Design Method

scholarly journals 3105 An Optimal Design Method in First Order Analysis : Simultaneous Optimization of Cross Sectional and Topological Configurations

2001 ◽  
Vol 2001.11 (0) ◽  
pp. 273-275
Author(s):  
Tatsuyuki Amago ◽  
Shinji Nishiwaki ◽  
Hidekazu Nishigaki ◽  
Yoshio Kojima ◽  
Noboru Kikuchi
Keyword(s):  
Optimal Design ◽  
Design Method ◽  
Simultaneous Optimization ◽  
Cross Sectional ◽  
Order Analysis ◽  
First Order ◽  
Optimal Design Method

scholarly journals Optimisation of micro W-bending process parameters using I-optimal design-based response surface methodology

2021 ◽  
Vol 8 ◽  
pp. 7
Author(s):  
Xiaoyu Liu ◽  
Xiao Han ◽  
Shiping Zhao ◽  
Yi Qin ◽  
Wan-Adlan Wan-Nawang ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Optimal Design ◽  
Response Surface ◽  
Process Parameters ◽  
Design Method ◽  
Dimensional Accuracy ◽  
Foil Thickness ◽  
Optimum Process ◽  
Proposed Model ◽  
Bending Process

There is an increasingly recognised requirement for high dimensional accuracy in micro-bent parts. Springback has an important influence on dimensional accuracy and it is significantly influenced by various process parameters. In order to optimise process parameters and improve dimensional accuracy, an approach to quantify the influence of these parameters is proposed in this study. Experiments were conducted on a micro W-bending process by using an I-optimal design method, breaking through the limitations of the traditional methods of design of experiment (DOE). The mathematical model was established by response surface methodology (RSM). Statistical analysis indicated that the developed model was adequate to describe the relationship between process parameters and springback. It was also revealed that the foil thickness was the most significant parameter affecting the springback. Moreover, the foil thickness and grain size not only affected the dimensional accuracy, but also had noteworthy influence on the springback behaviour in the micro W-bending process. By applying the proposed model, the optimum process parameters to minimize springback and improve the dimensional accuracy were obtained. It is evident from this study that the I-optimal design-based RSM is a promising method for parameter optimisation and dimensional accuracy improvement in the micro-bending process.

Design Optimization of Opposite Tape-Spring Flexure Hinges

2015 ◽  
Vol 740 ◽  
pp. 99-103
Author(s):  
Hui Yang ◽  
Rong Qiang Liu ◽  
Hong Wei Guo ◽  
Jian Guo Tao
Keyword(s):  
Optimal Design ◽  
Response Surface ◽  
Response Surface Method ◽  
Design Method ◽  
Nsga Ii ◽  
Factorial Method ◽  
Surface Method ◽  
Optimal Design Method ◽  
Relative Errors ◽  
Full Factorial

An optimal design method for the qusai-static folding and deployment of opposite tape-spring flexure (OTSF) hinges is presented based on the response surface method. The full factorial method is employed to design of experiments, and the qusai-static folding and deployment nonlinear analysis is obtained by ABAQUS/Explicit slover. The surrogate models of the OTSF flexure hinge are derived by the response surface method. Considering lightweight and high stability, the peak moment of quasi-static folding and deployment, and maximum Mises stress in complete folding configuration as well as mass are set as the objectives to get the optimal performances. The modified NSGA-II is used to seek for an optimal design. The relative errors of the objectives between the optimal design and the FE analysis results are less than 3.5%.

Study on Optimum Cross-Section of Gravity Retaining Wall Based on ANSYS

2011 ◽  
Vol 243-249 ◽  
pp. 2618-2622
Author(s):  
Shao Qin Zhang ◽  
Zhi Ye Su ◽  
Yan Fen Zhong
Keyword(s):  
Optimal Design ◽  
Optimum Design ◽  
Cross Section ◽  
Design Method ◽  
Retaining Wall ◽  
Optimal Method ◽  
Gravity Retaining Wall ◽  
First Order ◽  
Optimal Design Method ◽  
Better Than

Based on the geometric properties of a gravity retaining wall, an optimal design model is proposed, and then the best cross-section of the gravity retaining wall can be obtained by using ANSYS optimal techniques. An example is given to verify the effectiveness and superiority of the optimal design method based on ANSYS, and the results show that the optimum design is better than the original one. Further, the comparison between the sub-problem approximation optimal method and the first-order optimal method is performed, and our investigation proves that the first-order optimal method is more economical and reasonable.

scholarly journals Development of Optimal Design Method for Steel Double-Beam Floor System Considering Rotational Constraints

2021 ◽  
Vol 11 (7) ◽  
pp. 3266
Author(s):  
Insub Choi ◽  
Dongwon Kim ◽  
Junhee Kim
Keyword(s):  
Optimal Design ◽  
Design Process ◽  
Design Method ◽  
Steel Beams ◽  
High Gravity ◽  
Double Beam ◽  
Iterative Analysis ◽  
Floor Systems ◽  
Optimal Design Method ◽  
Floor System

Under high gravity loads, steel double-beam floor systems need to be reinforced by beam-end concrete panels to reduce the material quantity since rotational constraints from the concrete panel can decrease the moment demand by inducing a negative moment at the ends of the beams. However, the optimal design process for the material quantity of steel beams requires a time-consuming iterative analysis for the entire floor system while especially keeping in consideration the rotational constraints in composite connections between the concrete panel and steel beams. This study aimed to develop an optimal design method with the LM (Length-Moment) index for the steel double-beam floor system to minimize material quantity without the iterative design process. The LM index is an indicator that can select a minimum cross-section of the steel beams in consideration of the flexural strength by lateral-torsional buckling. To verify the proposed design method, the material quantities between the proposed and code-based design methods were compared at various gravity loads. The proposed design method successfully optimized the material quantity of the steel double-beam floor systems without the iterative analysis by simply choosing the LM index of the steel beams that can minimize objective function while satisfying the safety-related constraint conditions. In particular, under the high gravity loads, the proposed design method was superb at providing a quantity-optimized design option. Thus, the proposed optimal design method can be an alternative for designing the steel double-beam floor system.

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