Results 91 to 100 of about 185,504 (288)

A bifurcation study to guide the design of a landing gear with a combined uplock/downlock mechanism [PDF]

, 2014
This paper discusses the insights that a bifurcation analysis can provide when designing mechanisms. A model, in the form of a set of coupled steady-state equations, can be derived to describe the mechanism.
Knowles, James A C, Krauskopf, Bernd, Lowenberg, Mark H, Neild, Simon A   +3 more
core   +3 more sources

Spatially Tailorable Liquid Crystalline Elastomer Alignment During Digital Light Process 3D Printing

Advanced Functional Materials, EarlyView.
Here, we report the fabrication of 3D printable liquid crystalline elastomer (LCE) structures with spatially tailorable alignment domains within the same layer. This work addresses the long‐standing challenge of preparing complex 3D LCE architectures with patterned functional domains to achieve nonlinear deformations. Fabrication of multi‐domains in 3D
Adam Bischoff, Saman Jamshididana, Zach Miller, Kassandra Hernandez, Nicolas Gonsalves, Andre Olarra, Elliot Yoo, Jeremy A. Herman, Devin J. Roach   +8 more
wiley   +1 more source

Encoding Magnetic Anisotropies in Digital Light Processing 3D Printing

Advanced Functional Materials, EarlyView.
A hybrid magnetic device—combining a coaxial coil within a nested Halbach array—is presented, integrated into a DLP 3D printer to enable spatially resolved magnetic field control. This system enables complex, multimodal responses by programming liquid crystal elastomer resins for magnetic and thermal actuation, and by inducing electrically conductive ...
Eléonore Aïdonidis, Andrea Cosola, Pierre Bourdon, Hichem Dammak, Marco Sangermano, Frédéric Demoly, Marco Faustini, Amélie Pérot, Didier Lairez, Rakine Mouhoubi, Sébastien Blanquer, Giancarlo Rizza   +11 more
wiley   +1 more source

Fast Stiffness Matrix Calculation for Nonlinear Finite Element Method

Journal of Applied Mathematics, 2014
We propose a fast stiffness matrix calculation technique for nonlinear finite element method (FEM). Nonlinear stiffness matrices are constructed using Green-Lagrange strains, which are derived from infinitesimal strains by adding the nonlinear terms ...
Emir Gülümser, Uğur Güdükbay, Sinan Filiz   +2 more
doaj   +1 more source

Tire State Stiffness Prediction for Improving Path Tracking Control During Emergency Collision Avoidance

IEEE Access, 2019
In this study, a model predictive path tracking control method based on the prediction of tire state stiffness is proposed to improve the path tracking performance at the limit of vehicle dynamics. Considering the influence of the nonlinear properties of
Shaosong Li, Guodong Wang, Guoying Chen, Hong Chen, Bangcheng Zhang   +4 more
doaj   +1 more source

Modeling of joints for the dynamic analysis of truss structures [PDF]

An experimentally-based method for determining the stiffness and damping of truss joints is described. The analytical models use springs and both viscous and friction dampers to simulate joint load-deflection behavior.
Belvin, W. Keith
core   +1 more source

The static nonlinear analysis of shells of revolution (SNASOR II) [PDF]

, 1974
Utilizing stiffness matrices and supplying as input the loading and boundary conditions, program generates equilibrium equations for structure. Nonlinear strain energy terms result in pseudogeneralized forces which are combined with applied generalized ...
Haisler, W. E., Stricklin, J. A.
core   +1 more source

Self-induced topological transition in phononic crystals by nonlinearity management

, 2019
A new design paradigm of topology has recently emerged to manipulate the flow of phonons. At its heart lies a topological transition to a nontrivial state with exotic properties. This framework has been limited to linear lattice dynamics so far.
Chaunsali, Rajesh, Theocharis, Georgios
core   +1 more source

Analysis of bilinear oscillators under harmonic loading using nonlinear output frequency response functions [PDF]

, 2007
In this paper, the new concept of Nonlinear Output Frequency Response Functions (NOFRFs) is extended to the harmonic input case, an input-independent relationship is found between the NOFRFs and the Generalized Frequency Response Functions (GFRFs).
Bayly, Billings, Billings, Bovsunovskii, Bovsunovskii, Bovsunovskya, Butcher, Cacciola, Chati, Choi, Chondros, Chu, Darpe, Friswell, Gasch, Gerber, Huang, Jeffreys, Lang, Lang, Lim, Liu, Musil, Natsiavas, Nosyreva, Pai, Pearson, Peyton Jones, Rivola, S.A. Billings, Sundermeyer, Thompson, Vazquez Feijoo, Vazquez Feijoo, Vazquez Feijoo, Wilson, Worden, Y. Lu, Z.K. Peng, Z.Q. Lang, Zastrau, Zhang, Zhang   +42 more
core   +1 more source

Wing/store flutter with nonlinear pylon stiffness [PDF]

21st Structures, Structural Dynamics, and Materials Conference, 1980
Recent wind tunnel tests and analytical studies show that a store mounted on a pylon with soft pitch stiffness provides substantial increase in flutter speed of fighter aircraft and reduces dependency of flutter on mass and inertia of the store.
R. DESMARAIS, W. REED, III
openaire   +1 more source