Results 71 to 80 of about 22,807 (338)

Multifunctional Fluidic Units for Emergent, Responsive Robotic Behaviors

Advanced Materials, EarlyView.
A multifunctional reconfigurable fluidic unit can be used as sensor, valve and actuator is presented. A unique configuration combines the features of the three components as a Responsive self‐oscillating actuator. The remarkable versatility of the fluidic unit is demonstrated by building different robots with the same fluidic units only by varying ...
Mostafa Mousa, Alberto Comoretto, Johannes T.B. Overvelde, Antonio E. Forte   +3 more
wiley   +1 more source

递纸传动机构间隙动力学特性研究

Jixie chuandong, 2013
Taking the component of the crank and connecting rod mechanism with revolute clearance joint in the sheet transfer mechanism of print ing machine as the research object,on the basis of the vector clearance and the penetration depth of contact,the ...
午丽娟, 李爱平, 刘雪梅
doaj  

Determination of Energy Losses of the Crank Press Mechanism

Machines
This paper focuses on determining the friction energy loss in the mechanism of a mechanical crank press. After defining the crank press mechanism and how it works, we describe the energy balance of a technological operation—forming.
Jan Hlavac, Jiri Dekastello
doaj   +1 more source

A parametric study on the dynamic response of planar multibody systems with multiple clearance joints [PDF]

, 2010
A general methodology for dynamic modeling and analysis of multibody systems with multiple clearance joints is presented and discussed in this paper. The joint components that constitute a real joint are modeled as colliding bodies, being their behavior ...
A. Tasora, A.A. Shabana, B. Brogliato, B. Brogliato, B. Miedema, B.M. Kwak, C. Glocker, C. Glocker, C. Innocenti, D.T. Greenwood, E.J. Haug, F. Farahanchi, F. Pfeifer, F. Pfeiffer, F. Pfeiffer, G. Gilardi, H. Hertz, H.M. Lankarani, J. Ambrósio, J. Ambrósio, J. Baumgarte, J. Pang, J. Rhee, J.-S. Pang, J.A. Zukas, J.C. Trinkle, J.J. Moreau, J.M. McCarthy, M. Anitescu, M. Anitescu, M. Förg, M.T. Bengisu, N. Srivastava, O.A. Bauchau, P. Flores, P. Flores, P. Flores, P. Flores, P. Flores, P. Flores, P. Flores, P. Flores, P. Flores, P. Flores, P.D. Panagiotopoulos, P.E. Nikravesh, P.E. Nikravesh, P.E. Nikravesh, Paulo Flores, R.C. Smith, R.I. Leine, R.R. Ryan, R.S. Haines, S. Dubowsky, S. Dubowsky, S. Dubowsky, S. Erkaya, S. Erkaya, S. Wiggins, S.P. Timoshenko, T. Kakizaki, W. Goldsmith, W. Wu, W.M. Mansour, W.W. Gear   +64 more
core   +4 more sources

Resolving the Structural Duality of Graphene Grain Boundaries

Advanced Materials, EarlyView.
Cantilever ncAFM resolves the atomic structure of grain boundaries in graphene, revealing coexisting stable and metastable types. Both contain pentagon/heptagon defects, but metastable GBs show irregular geometries. Modeling shows metastable GBs form under compression, exhibiting vertical corrugation, while stable GBs are flat.
Haojie Guo, Emiliano Ventura‐Macías, Mariano D. Jiménez‐Sánchez, Nicoleta Nicoara, Pierre Mallet, Jean‐Yves Veuillen, Vincent T. Renard, Antonio J. Martínez‐Galera, Pablo Pou, Julio Gómez‐Herrero, Rubén Pérez, Iván Brihuega   +11 more
wiley   +1 more source

Scavenge flow analysis of opposed-piston two-stroke engine based on dynamic characteristics

Advances in Mechanical Engineering, 2015
Opposed-piston two-stroke engine has been proposed by Beijing Institute of Technology to improve power density and complete machine balance relative to conventional engines. In order to study opposed-piston two-stroke engine scavenging flow, a scavenging
Fu-kang Ma, Chang-lu Zhao, Zhen-feng Zhao, Shuan-lu Zhang   +3 more
doaj   +1 more source

A Lie group variational integrator in a closed-loop vector space without a multiplier [PDF]

Mechanical Sciences
As a non-tree multi-body system, the dynamics model of four-bar mechanism is a differential algebraic equation. The constraints breach problem leads to many problems for computation accuracy and efficiency.
L. Bai, L. Xia, X. Ge
doaj   +1 more source

Optimization of a High–Speed Deployment Slider–Crank Mechanism: A Design Charts Approach [PDF]

, 2014
Mechanical and aerospace applications often require that mechanisms deploy in a quick stable and reliable way. The objective of this study is to implement a general optimization procedure to perform a first stage conceptual design of HSD mechanisms ...
Cavezza, A, Gautham, M, Mariti, L, Muchino, V, Pennestrì, E, Valentini, P   +5 more
core   +1 more source

A Cu‐Based Near‐IR Active MOF with an Ion‐Pair Guest Exhibiting Versatile and Selective Gas‐Solid Reactivity

Advanced Materials, EarlyView.
The new Cu‐containing MOF (Me2NH2)(CuICl2)@[Cu4(INA)4Cl2O]·1.5dmf (3) contains a cation and an anion as guests and shows UV‐near‐mid‐IR absorption and near‐IR emission. MOF 3 shows gas‐solid reactivity in the presence of NH3 and HCOOH to yield two new 3D MOF.
Rajat Saha, Alejandro Cortés‐Villena, Silvia Gómez‐Coca, Alberto Fernández‐Alarcón, Joaquín Calbo, Raquel E. Galian, Enrique Ortí, Eliseo Ruiz, Mónica Giménez‐Marqués, Samia Benmansour, Carlos J. Gómez‐García   +10 more
wiley   +1 more source

A Quantum-mechanical description of ion motion within the confining potentials of voltage gated ion channels

, 2012
Voltage gated channel proteins cooperate in the transmission of membrane potentials between nerve cells. With the recent progress in atomic-scaled biological chemistry it has now become established that these channel proteins provide highly correlated ...
Bernroider G., Bernroider G., Briegel H. J., Corry B., Gustav Bernroider, Johann Summhammer, Thomas J. W., Vahid Salari   +7 more
core   +2 more sources