Optimization on mechanical structure for material nonlinearity based on proportional topology method

TOPOLOGY OPTIMIZATION OF PRETENSIONED CONCRETE BEAMS CONSIDERING MATERIAL NONLINEARITY

In this paper, the bi-directional evolutionary structural optimization (BESO) method is used to find optimal layouts of 3D prestressed concrete beams. Considering the element sensitivity number as the design variable, the mathematical formulation of topology optimization is developed based on the ABAQUS finite element software package. The surface-to-surface contact with a small sliding between...

application of upfc based on svpwm for power quality improvement

در سالهای اخیر،اختلالات کیفیت توان مهمترین موضوع می باشد که محققان زیادی را برای پیدا کردن راه حلی برای حل آن علاقه مند ساخته است.امروزه کیفیت توان در سیستم قدرت برای مراکز صنعتی،تجاری وکاربردهای بیمارستانی مسئله مهمی می باشد.مشکل ولتاژمثل شرایط افت ولتاژواضافه جریان ناشی از اتصال کوتاه مدار یا وقوع خطا در سیستم بیشتر مورد توجه می باشد. برای مطالعه افت ولتاژ واضافه جریان،محققان زیادی کار کرده ...

An Optimum Design Method for Vibrating Mechanical Structures Based on Topology Optimization Techniques

Department of Precision Engineering, Kyoto University, Kyoto, Japan Department of Aeronautics and Astronautics, Kyoto University, Kyoto, Japan, [email protected] Department of Aeronautics and Astronautics, Kyoto University, Kyoto, Japan, [email protected] Department of Aeronautics and Astronautics, Kyoto University, Kyoto, Japan, [email protected] Graduate School of Env...

On Topology Optimization and Canonical Duality Method

The general problem in topology optimization is correctly formulated as a doublemin mixed integer nonlinear programming (MINLP) problem based on the minimum total potential energy principle. It is proved that for linear elastic structures, the alternative iteration leads to a Knapsack problem, which is considered to be NP-hard in computer science. However, by using canonical duality theory (CDT...

Truss Sizing with Material Nonlinearity via Displacement Based Optimization