Results 81 to 90 of about 8,653 (169)

Fiber-based shape-morphing architectures

, 2019
We describe a combined experimental and theoretical investigation of shape-morphing structures assembled by actuating composite (Janus) fibers, taking into account multiple relevant factors affecting shape transformations, such as strain rate, composition, and geometry of the structures. Starting with simple bending experiments, we demonstrate the ways
Zakharov, Andrei, Pismen, Len M., Ionov, Leonid   +2 more
openaire   +2 more sources

Direct 4D printing of hydrogels driven by structural topology

Virtual and Physical Prototyping
Four-dimensional (4D) printing combines shape-morphing materials and three-dimensional (3D) printing technology, enabling efficient fabrication of complex shape-changing structures.
Huijun Li, Paulo Jorge Da Silva Bartolo, Kun Zhou   +2 more
doaj   +1 more source

Visible and infrared three-wavelength modulated multi-directional actuators

Nature Communications, 2019
Light-guided robotic soft actuators have attracted intense scientific attention but it remains challenging to modulate the moving directions and shape morphing modes.
Bo Zuo, Meng Wang, Bao-Ping Lin, Hong Yang   +3 more
doaj   +1 more source

Shape Morphing of 4D-Printed Polylactic Acid Structures under Thermal Stimuli: An Experimental and Finite Element Analysis

Aerospace
This study explores the shape-morphing behavior of 4D-printed structures made from Polylactic Acid (PLA), a prominent bio-sourced shape-memory polymer.
Grigorios Kostopoulos, Konstantinos Stamoulis, Vaios Lappas, Stelios K. Georgantzinos   +3 more
doaj   +1 more source

Hierarchically self-morphing structure through 4D printing

Virtual and Physical Prototyping, 2017
Hierarchical self-morphing refers to the concurrent global and local changes in shape or structure. Previous research works have demonstrated 3D printed self-morphing structures and the sequential folding/unfolding behaviours.
J. E. M. Teoh, J. An, C. K. Chua, M. Lv, V. Krishnasamy, Y. Liu   +5 more
doaj   +1 more source

The Control Efficiency Analysis of Asymmetry Transmutation forFolding Wing Morphing Aircraft

Hangkong gongcheng jinzhan, 2018
Folding wing morphing aircraft can alter their shape largely which causes the aerodynamic parameters change significantly. A control scheme that using asymmetric morphing as a control input is proposed in this paper to investigate the control efficiency ...
Xu Xiaowu, Zhang Wei, Zhan Hao
doaj   +1 more source

Design Optimization and Testing of Seamless Morphing Leading Edge for Large Civil Aircraft

Engineering Proceedings
Climate change has prompted the aviation industry to decrease its emissions of greenhouse gases. With their aerodynamic shape adaptability, morphing leading edges have great potential in the application of laminar flow wings and are beneficial to green ...
Zhigang Wang, Xiasheng Sun, Yu Yang, Gang Liu, Daochun Li, Jinwu Xiang   +5 more
doaj   +1 more source

Field responsive mechanical metamaterials. [PDF]

, 2018
Typically, mechanical metamaterial properties are programmed and set when the architecture is designed and constructed, and do not change in response to shifting environmental conditions or application requirements.
Bekker, Logan, Dudukovic, Nikola A, Duoss, Eric B, Golobic, Alexandra M, Jackson, Julie A, Loh, Kenneth J, Messner, Mark C, Moran, Bryan, Pascall, Andrew J, Smith, William L, Spadaccini, Christopher M   +10 more
core   +1 more source

Volume Preserving Neural Shape Morphing

Computer Graphics Forum
AbstractShape interpolation is a long standing challenge of geometry processing. As it is ill‐posed, shape interpolation methods always work under some hypothesis such as semantic part matching or least displacement. Among such constraints, volume preservation is one of the traditional animation principles.
Buonomo, Camille, Digne, Julie, Chaine, Raphaëlle   +2 more
openaire   +1 more source

Aerodynamic Shape Design and Validation of an Advanced High-Lift Device for a Regional Aircraft with Morphing Droop Nose

International Journal of Aerospace Engineering, 2019
In the present work, the aerodynamic shape design of an advanced high-lift system for a natural laminar flow (NLF) wing, based on the combination of a morphing droop nose and a single slot trailing edge flap, is presented.
Alessandro De Gaspari, Frédéric Moens
doaj   +1 more source