Results 41 to 50 of about 81,293 (257)

Combining constructive and equational geometric constraint solving techniques [PDF]

, 1997
In the past few years, there has been a strong trend towards developing parametric, computer aided design systems based on geometric constraint solving.
Joan Arinyo, Robert, Soto Riera, Antoni
core   +1 more source

3D‐Printed Serial Snap‐Through Architectures for Programmable Mechanical Response

Advanced Engineering Materials, EarlyView.
A serial snap‐through architecture is realized using compact 3D‐printed von Mises truss units arranged in a staged cascade. Their geometry and boundary conditions program multistage mechanical responses with plateaux and re‐hardening regimes. An inverted‐compliance model predicts these behaviors and enables analytical design of programmable force ...
Filipe A. Santos
wiley   +1 more source

Parametric design and modular construction of a large additive-manufactured hypar shell structure

Architectural Intelligence, 2023
AbstractDespite recent advances in additive manufacturing technologies, challenges remain to build 3D-printed structures at the architectural scale due to the high cost of large printing equipment. To address this challenge, modular construction has demonstrated its merit by making smaller prefabricated components and using on-site assembly. This paper
Chaohao Su, Meiqin Yuan, Yi Fan, Lu Zhu, Nan Hu   +4 more
openaire   +1 more source

Positive‐Tone Nanolithography of Antimony Trisulfide with Femtosecond Laser Wet‐Etching

Advanced Functional Materials, EarlyView.
A butyldithiocarbamic acid (BDCA) etchant is used to fabricate various micro‐ and nanoscale structures on amorphous antimony trisulfide (a‐Sb2S3) thin film via femtosecond laser etching. Numerical analysis and experimental results elucidate the patterning mechanism on gold (reflective) and quartz (transmissive) substrates.
Abhrodeep Dey, Uwe Hübner, Albane Benardais, Xiaofei Wu, Andrea Dellith, Jan Dellith, Torsten Wieduwilt, Henrik Schneidewind, Markus A Schmidt, Virginie Nazabal, Volker Deckert, Jer‐Shing Huang, Wei Wang   +12 more
wiley   +1 more source

Main approaches and features of the design of aircraft hydro-mechanical control systems

Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение
The main purpose of the article is to identify the main approaches and define the concept when modeling the hydro-mechanical control systems of an aircraft. The advantages and importance of a computational experiment with the aid of a virtual test bed at
P. V. Petrov, V. A. Tselischev, D. A. Kuderko   +2 more
doaj   +1 more source

TECHNIQUE AND SOFTWARE FOR PROJECT PROPOSALS EXPERT ASSESSMENT OF AVIATION AND ROCKETRY PRODUCTS

Научный вестник МГТУ ГА, 2018
The essence of an expert assessment as a scientific method is a rational organization of experts analyzing the problem from a quantitative evaluation of judgments and results processing. A generalized opinion of the expert group is taken as the solution.
S. G. Parafes, O. G. Feoktistova
doaj   +1 more source

The building information modeling for the retrofitting of existing buildings. A case study in the University of Cagliari. [PDF]

, 2018
Italy's very consistent buildings stock has become the major field for real estate investments and for the related projects and actions. The urge of working on built environment is however facing some crucial issues.
Chiara Tagliabue, Lavinia, Desogus, Giuseppe, Martino Di Giuda, Giuseppe, Monni, Giuseppina, Quaquero, Emanuela, Sanna, Antonello, Villa, Valentina   +6 more
core   +1 more source

Rethinking Ephemeral Architecture. Advanced Geometry for Citizen-Managed Spaces [PDF]

, 2017
In recent years there have been a high amount of citizen initiatives that address the complex problems of the contemporary city. There are empty or disused spaces that have been reused for urban gardens, for social use, to encourage integration and ...
López Martínez, Alicia, Martín Pastor, Andrés, Martín-Mariscal, Amanda, Mercader-Moyano, Pilar (Coordinador)   +3 more
core   +1 more source

Exploiting Two‐Photon Lithography, Deposition, and Processing to Realize Complex 3D Magnetic Nanostructures

Advanced Functional Materials, EarlyView.
Two‐photon lithography (TPL) enables 3D magnetic nanostructures with unmatched freedom in geometry and material choice. Advances in voxel control, deposition, and functionalization open pathways to artificial spin ices, racetracks, microrobots, and a number of additional technological applications.
Joseph Askey, Arjen van den Berg, Sandra Ruiz Gomez, Claire Donnelly, Dirk Grundler, Sam Ladak   +5 more
wiley   +1 more source

Three‐dimensional Antimony Sulfide Based Flat Optics

Advanced Functional Materials, EarlyView.
This work presents the development of a grayscale electron beam lithography (g‐EBL) method for fabricating antimony trisulfide (Sb2S3) nanostructures with customizable 3D profiles. The refractive index of g‐EBL patterned Sb2S3 is determined based on the synergy of genetic algorithm and transfer matrix method.
Wei Wang, Uwe Hübner, Anne Gärtner, Tao Chen, Joseph Köbel, Franka Jahn, Daniel Repp, Abhrodeep Dey, Henrik Schneidwind, Andrea Dellith, Jan Dellith, Torsten Wieduwilt, Matthias Zeisberger, Tanveer Ahmed Shaik, Astrid Bingel, Markus A. Schmidt, Jer‐Shing Huang, Ulf Peschel, Volker Deckert   +18 more
wiley   +1 more source