Results 61 to 70 of about 225,573 (166)

Proposal of texture shape optimization algorithm under constant load condition and considerations on new shape update equation (Texture shape optimization for minimization of friction coefficient)

Journal of Fluid Science and Technology, 2020
An algorithm to optimize texture shape under constant load conditions and a shape update equation of the design variables are proposed. The tribological properties are improved by machining grooves and holes, termed“ texture ”, on frictional surfaces ...
Syuta SASAOKA, Takahiko KURAHASHI
doaj   +1 more source

Reconstruction of Tesla micro-valve using topological sensitivity analysis

Advances in Nonlinear Analysis, 2019
In this paper, we deal with topology optimization attributed to the non stationary Navier-Stokes equations. We propose an approach where we analyze the sensitivity of a shape function relating to a perturbation of the flow domain.
Abdelwahed M., Chorfi N., Malek R.
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The Influence of the Load Term of the Strain Energy Sensitivity in the Shell Shape Optimization

Applied Sciences, 2020
The sensitivity method is a type of effective shape optimization method and the strain energy is a frequently used objective function. The change of a surface shape inevitably causes a change in its quality.
Baoshi Jiang, Changyu Cui, Jianghong Wang   +2 more
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Turnpike in optimal shape design

IFAC-PapersOnLine, 2019
Abstract We investigate the turnpike problem in optimal control, in the context of time-evolving shapes. We focus here on the heat equation model where the shape acts as a source term, and we search the optimal time-varying shape, minimizing a quadratic criterion.
Lance, G., Trélat, E., Zuazua, E.
openaire   +2 more sources

Gradient-Based Aero-Stealth Optimization of a Simplified Aircraft

Fluids
Modern fighter aircraft increasingly need to conjugate aerodynamic performance and low observability. In this paper, we showcase a methodology for a gradient-based bidisciplinary aero-stealth optimization.
Charles Thoulon, Gilbert Roge, Olivier Pironneau   +2 more
doaj   +1 more source

Shape optimization method for nozzle design

Computer Assisted Methods in Engineering and Science, 2023
The optimization of the nozzle shape was carried out using the finite element incompressible viscous flow solver, with discretization of total derivative, with the originally developed software.
Zoran Mrša, Gorazd Medić
doaj  

The optimal shape of roots [PDF]

Complexity, 2010
Martin Singleton, Gregor Heiss, Alfred W. Hübler   +2 more
openaire   +1 more source

An Integrated Framework for Arch Dam Shape Optimization Using Stratified Conditional Sampling and Gaussian Process Surrogates

Buildings
Shape optimization of arch dams is essential for balancing structural safety and economic efficiency, yet remains computationally intensive due to costly finite element analyses and strict geometric constraints.
Qingheng Xie, Jian Wang, Yang Lu
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Optimal Thickness Shaped Cantilever Type Vibration Energy Harvester for the Second Eigenfrequency

Micromachines
Piezoelectric cantilever beams are among the most popular vibration energy harvesting devices. Maximization of the spatial distribution of axial strain along this beam (objective function) increases harvesting efficiency.
Paulius Skėrys, Rimvydas Gaidys
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Simultaneous optimization of shape and topology for solid structure (Proposal of a topology optimization method with variable design domain)

Nihon Kikai Gakkai ronbunshu
Since the optimization results obtained by topology optimization depend on the size of the design domain, it is desirable to optimize the design domain as well during topology optimization.
Daiki YAMANE, Masatoshi SHIMODA
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