Results 91 to 100 of about 147,856 (286)

Physics‐Informed Neural Network‐Enabled Forward Prediction and Inverse Design of Ring Origami

open access: yesAdvanced Science, EarlyView.
This work presents a KRT‐PINN framework that integrates Kirchhoff rod theory with physics‐informed neural networks for the forward prediction and inverse design of ring origami consisting of closed‐loop rods. The framework predicts stable states of segmented rings with prescribed natural‐curvature profiles and determines the natural‐curvature profiles ...
Luyuan Ning   +3 more
wiley   +1 more source

Endogenous Wage Rigidity [PDF]

open access: yes
We use a random survey of Swedish human resource managers to study the reasons for wage rigidity. Our findings are as follows. First, during the exceptional recession of the 1990s only 1.1 percent of workers received a wage cut.
Agell, Jonas, Bennmarker, Helge
core   +2 more sources

Torsional rigidity of submanifolds with controlled geometry [PDF]

open access: yes, 2008
We prove explicit upper and lower bounds for the torsional rigidity of extrinsic domains of submanifolds ^m$ with controlled radial mean curvature in ambient Riemannian manifolds ^n$ with a pole $ and with sectional curvatures bounded from above and from
A. Hurtado   +9 more
core   +1 more source

A Versatile‐Designable Framework for Active and Programmable Shape‐Morphing Soft Matter Systems: From Inverse Design to Closed‐Loop Control

open access: yesAdvanced Science, EarlyView.
A versatile framework integrates addressable electrothermal actuation and strain‐constraint mechanisms to construct programmable shape‐morphing soft matter systems. By combining an analytical inverse design strategy for high‐fidelity 3D surface reconstruction with deep learning‐based closed‐loop control, this approach enables zero‐energy shape locking,
Kai Liu   +5 more
wiley   +1 more source

From Folding Mechanics to Robotic Function: A Unified Modeling Framework for Compliant Origami

open access: yesAdvanced Science, EarlyView.
A geometry‐consistent DDG framework captures compliant origami deformation from rigid‐like folding to soft panel bending. By tuning crease and panel stiffness, bistable snap‐through responses transform into smooth monostable deformation, enabling programmable stability and robot‐scale locomotion.
Bohan Zhang   +7 more
wiley   +1 more source

Influence of temperature changes on torsional rigidity and damping coefficient of rubber torsional vibration damper [PDF]

open access: yesTransport Problems, 2011
The short explanation of usefulness of rubber torsional dampers in crankshaft in multi-cylinder engines is presented. The description of the construction and operation of rubber torsional damper is also included.
Wojciech HOMIK
doaj  

Extrinsic torsion in rigid strings

open access: yesPhysics Letters B, 1988
Abstract We propose a new string model with extrinsic torsion and extrinsic curvature terms. Both the position vector X μ of the string and the frame n i μ of the normals to the tangent plane become dynamical variables due to the extrinsic torsion term.
openaire   +1 more source

Torsional rigidity of cotton hosiery yarns

open access: yes, 2005
136-141Torsional properties of eighteen different commercial cotton hosiery yarns in the count range of 16s-40s Ne have been studied on a Torsiometer.
Bhat, P, Banerjee, P K
core  

A Rigid–Foldable Kirigami‐Inspired Metamorphic Mechanism With Programmable Motion Modes and Self‐Locking

open access: yesAdvanced Science, EarlyView.
Geometric constraint reconfiguration enables a rigid–foldable kirigami‐inspired mechanism to switch between twisting, directional translation, and self‐locking states. By encoding multifunctionality directly into its architecture, the mechanism achieves multimodal motion and passive locking without reassembly, providing a compact platform for adaptive ...
Jianlin Wang, Zhongmin Song, Ketao Zhang
wiley   +1 more source

Drgania Parametryczne Jednostopniowej Przekładni Zębatej

open access: yesEngineering Transactions, 1972
The subject of the investigations is the theoretical analysis of parametric vibrations of a simple gear transmission produced by periodic variations of the toothing rigidity.
R. Gryboś
doaj  

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