16 papers · ranked by Valyu relevance
Paulo Dainese, Louis Marra, Davide Cassara, Ary Portes + 6 more
'Jun Yang' 'Alfonso Palmieri' 'Janderson Rocha Rodrigues' 'Ahmed H. Dorrah' 'Federico Capasso'] Complex non-local behavior makes designing high efficiency and multifunctional metasurfaces a significant challenge. While using libraries of meta-atoms provide a simple and fast implementation methodology, pillar to pillar…
Junxian Chen, Jianhai Zhang, Hongwei Zhao, Ana González-Marcos
Stress uniformity within the gauge zone of a cruciform specimen significantly affects materials’ in-plane biaxial mechanical properties in material testing. The stress uniformity depends on the load transmission of the cruciform specimen from the fixtures to the gauge zone. Previous studies failed to alter the nature…
Zhizhou Zhang, Chungwei Lin, Bingnan Wang
The rapid growth of artificial intelligence is revolutionizing classical engineering society, offering novel approaches to material and structural design and analysis. Among various scientific machine learning techniques, physics-informed neural network (PINN) has been one of the most researched subjects, for its…
Daniel Schiwietz, Marian Hörsting, Eva Maria Weig, Matthias Wenzel + 1 more
'Peter Degenfeld-Schonburg'] Micro- and nanoelectromechanical system (MEMS and NEMS) resonators can exhibit rich nonlinear dynamics as they are often operated at large amplitudes with high quality factors and possess a high mode density with a variety of nonlinear modal couplings. Their impact is strongly influenced by…
Han Zhao, David Kamensky, John T. Hwang, Jiun-Shyan Chen
Isogeometric analysis (IGA) has emerged as a promising approach in the field of structural optimization, benefiting from the seamless integration between the computer-aided design (CAD) geometry and the analysis model by employing non-uniform rational B-splines (NURBS) as basis functions. However, structural…
Beom-Soo Kim, Hyun-Woo Han, Woo-Jin Chung, Young-Jun Park
In this study, gearbox radiated noise was successfully reduced through housing shape optimization. First, dynamic and structural-acoustic coupled analysis models of an agricultural UTV gearbox were developed. Then, the test equipment was configured to match that of the simulation model, and a test was conducted. The…
M. J. Wood, T. C. S. Rendall, C. B. Allen, L. J. Kedward + 3 more
'N. J. Taylor' 'J. Fincham' 'N. E. Leppard'] A novel geometry parameterisation method constructed from a volume-of-solid driven cellular automata is presented. The method is capable of describing complex geometry of arbitrary topology using a set of volume-of-solid parameters applied to a geometry control mesh. This is…
Shangjie Ge-Zhang, Xiaoli Chen, Haotong Zhu, Yuan Song + 3 more
'Jingang Cui' 'Łukasz Klapiszewski'] PET bottlesare often used as airtight containers for filling carbonated drinks. Because carbonated drinks contain large volumes of CO2 gas, the container needs to bear a tremendous pressure from the inside of the bottle.If the stress exceeds the bearing limit, the material will show…
Reinier Giele, Can Ayas, Matthijs Langelaar
A novel feature mapping topology optimization method is presented, allowing for the creation of features with highly flexible shapes. The method easily integrates with conventional density-based formulations. Feature shapes are implicitly described by NURBS control points. The feature shape dictates the locations of…
P. Gangl, M. H. Gfrerer
We introduce a unified sensitivity concept for shape and topological perturbations and perform the sensitivity analysis for a discretized PDE-constrained design optimization problem in two space dimensions. We assume that the design is represented by a piecewise linear and globally continuous level set function on a…
Jolanta Dzwierzynska, Patrycja Lechwar, Lihong Su, Xing Zhao + 2 more
'Peitang Wei' 'Hui Wang'] Rationalization in structural design in the field of steel structures mostly consists inreducing structural material. The aim of this work was to develop an algorithmic-aided, original and practical approach to shaping curvilinear steel bar structures of modular roofs, enabling their…
Jolanta Dzwierzynska, Igor Labuda, Georgios Savaidis
The article deals with shaping effective curvilinear steel rod roof structures using genetic algorithms by implementing them for the analysis of various case studies in order to find new and efficient structures with positive characteristics. The structures considered in this article are created on the basis of the…
Frantisek Sedlacek, Tomas Kalina, Martin Stepanek, Grzegorz Królczyk
This paper presents a novel design methodology that validates and utilizes the results of topology optimization as the final product shape. The proposed methodology aims to streamline the design process by eliminating the need for remodeling and minimizing printing errors through process simulation. It also eliminates…
António Gaspar-Cunha, José A. Covas, Janusz Sikora, Tomasz Sterzynski
'Tomasz Sterzynski'] The application of optimization techniques to improve the performance of polymer processing technologies is of great practical consequence, since it may result in significant savings of materials and energy resources, assist recycling schemes and generate products with better properties. The…
Feng Zou, Xia Wang, Weilin Zhang, Qingshui Shi + 3 more
'Heming Jia' 'Gang Hu'] Within computer-aided geometric design (CAGD), Said-Ball curves are primarily adopted in domains such as 3D object skeleton modeling, vascular structure repair, and path planning, owing to their flexible geometric properties. Techniques for curve degree reduction seek to reduce computational and…
James T. Todd, Alexander A. Petrov
Shape is an interesting property of objects because it is used in ordinary discourse in ways that seem to have little connection to how it is typically defined in mathematics. The present article describes how the concept of shape can be grounded within Euclidean and non-Euclidean geometry and also to human perception.…