Results 41 to 50 of about 82,503 (291)

Research and technological prospects of applications for superconducting electrodynamic suspension

机车电传动, 2023
Compared to traditional transportation methods, high-speed maglev trains have many advantages. On a world-wide scale, two modes of maglev systems, electromagnetic suspension (EMS) and electrodynamic suspension (EDS), have emerged mature through years of ...
YU Qingsong, LI Kai, HU Hao, LIU Hongtao, SHAO Nan, LIU Shuai   +5 more
doaj  

Pseudo‐active actuators: A concept analysis

International Journal of Mechanical System Dynamics, 2021
The superior performance of active vibration control systems largely depends on the four‐quadrant controllable execution capability in the available force‐velocity diagram of active actuators.
Xianxu Bai, Guannan He
doaj   +1 more source

Improving machine dynamics via geometry optimization

, 2011
The central thesis of this paper is that the dynamic performance of machinery can be improved dramatically in certain cases through a systematic and meticulous evolutionary algorithm search through the space of all structural geometries permitted by ...
Sobester, Andras, Stanescu, Cristina, Tudose, Lucian   +2 more
core   +1 more source

Generalized Sums over Histories for Quantum Gravity I. Smooth Conifolds [PDF]

, 1993
This paper proposes to generalize the histories included in Euclidean functional integrals from manifolds to a more general set of compact topological spaces.
Amsterdamski, Anderson, Besse, Coleman, DeWitt, Donald M. Witt, Freedman, Gao, Gell-Mann, Geroch, Gibbons, Giddings, Glimm, Halliwell, Halliwell, Halliwell, Hartle, Hartle, Hartle, Hawking, Hawking, Hawking, Hirsch, Kirby, Kobayashi, Kristin Schleich, Nash, Page, Polchinski, Reed, Rourke, Schleich, Schleich, Spanier, Thurston, Uhlenbeck, Witt, Wright   +37 more
core   +3 more sources

The Chess conjecture

, 2003
We prove that the homotopy class of a Morin mapping f: P^p --> Q^q with p-q odd contains a cusp mapping. This affirmatively solves a strengthened version of the Chess conjecture [DS Chess, A note on the classes [S_1^k(f)], Proc. Symp.
Akhmetiev, Ando, Arnol’d, Boardman, Chess, Eliashberg, Rustam Sadykov, Saeki, Saeki, Sakuma   +9 more
core   +1 more source

PBF‐LB/M of Ti‐6Al‐4V: High‐Pressure Solution Treatment and Aging for Applications in a Sustainable Aerospace

Advanced Engineering Materials, EarlyView.
Additive manufacturing (AM) allows great geometric freedom for lightweight components. As parts are progressively optimized exploiting potentials in AM leading in smaller material cross sections, high pressure solution treating and aging (STA) treatments show an enormous potential for strongly improving material properties.
Mika León Altmann, Andre Danzig, Freerk Syassen, Rainer Fechte‐Heinen, Anastasiya Toenjes   +4 more
wiley   +1 more source

Structural Optimization and Performance Study of Squeeze Casting Suspension Arm Under Multi-Condition Loads

Applied Sciences
The suspension arm is a crucial connecting component in the automotive powertrain system, required to withstand various working condition loads, thus necessitating high mechanical performance.
Sen Deng, Aohua Zhou, Yun Chen
doaj   +1 more source

Time change for flows and thermodynamic formalism

, 2018
This paper is devoted to study how do thermodynamic formalism quantities varies for time changes of suspension flows defined over countable Markov shifts. We prove that in general no quantity is preserved.
Cipriano, Italo, Iommi, Godofredo
core   +1 more source

3D‐Printed Giant Magnetoresistive (GMR) Sensors Based on Self Compliant Springs

Advanced Engineering Materials, EarlyView.
This work explores 3D‐printed GMR sensors utilizing self‐compliant spring structures and conductive PLA composites. By optimizing arm width, we achieved high piezoresistive (0.34%/mm) and magnetoresistive (0.77%/mT) sensitivities. Demonstrated through Bluetooth‐integrated pressure and magnetic position sensing, these full printed low‐cost, customizable
Josu Fernández Maestu, Nelson Pereira, Javier Vicente, Carmen Rial Tubio, Senentxu Lanceros‐Méndez   +4 more
wiley   +1 more source

Specific heat capacity prediction of hybrid nanofluid using artificial neural network and its heat transfer application

Energy Reports, 2022
Currently, many industries aim to improve the heat transfer system to reduce cost and carbon emission. For improving heat exchanger apparatus, the convectional working fluid such as water can be replaced by hybrid nanofluid.
Sahatsawat Seawram, Prathana Nimmanterdwong, Teerawat Sema, Ratchanon Piemjaiswang, Benjapon Chalermsinsuwan   +4 more
doaj   +1 more source