Results 41 to 50 of about 315,273 (243)

Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control

Advanced Engineering Materials, EarlyView.
This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian, Frédéric Demoly, Mohammad Lakhi, Bernard Rolfe, Mahdi Bodaghi   +4 more
wiley   +1 more source

Forming Different Planetary Systems

, 2012
With the increasing number of detected exoplanet samples, the statistical properties of planetary systems have become much clearer. In this review, we summarize the major statistics that have been revealed mainly by radial velocity and transiting ...
Armitage, Batalha, Batygin, Binney, Borucki, Burkert, Butler, Butler, Chatterjee, Cieza, Cuzzi, Dawson, Duquennoy, Eggenberger, Endl, Fabrycky, Fabrycky, Fischer, Ford, Ford, Fortney, Fregeau, Gaudi, Gilliland, Gonzalez, Gould, Guedes, Haghighipour, Haghighipour, Haisch, Hatzes, Heppenheimer, Hernández, Holman, Howard, Hui Zhang, Hui-Gen Liu, Ida, Ida, Ida, Ida, Ikoma, Jang-Condell, Ji-Lin Zhou, Ji-Wei Xie, Johnson, Johnson, Jurić, Kaib, Kennedy, Kley, Kley, Kokubo, Kratter, Larwood, Laughlin, Lee, Lee, Levison, Lithwick, Lithwick, Liu, Marcy, Marti, Marzari, Marzari, Matsumura, Matsuyama, Mayer, Mayor, Mayor, Meschiari, Mochejska, Murray, Nagasawa, Nagasawa, Nagasawa, Naoz, Ormel, Pascucci, Perets, Perets, Pfahl, Pätzold, Qian, Queloz, Quinn, Quintana, Quintana, Rafikov, Rafikov, Raghavan, Raghavan, Rosvick, Saleh, Sato, Schlaufman, Socrates, Sozzetti, Spurzem, Stewart, Takeda, Tanaka, Terquem, Tremaine, Wang, Wang, Weidenschilling, Weldrake, Weldrake, Winn, Wittenmyer, Wittenmyer, Wittenmyer, Wright, Wright, Wright, Wu, Wu, Wu, Xie, Xie, Xie, Xie, Yasui, Yi-Sui Sun, Youdin, Zhang, Zhang, Zhao, Zhou, Zhou, Zhou, Zucker, Zucker   +134 more
core   +1 more source

A Novel Approach on Rapid Alloy Development of Tool Steels for Laser Powder Bed Fusion by In Situ Alloying

Advanced Engineering Materials, EarlyView.
A novel approach for alloy development in laser powder bed fusion is introduced. Instead of producing massive samples of one composition at a time, prepressed powder bed samples produced from powder mixtures are processed. Guidelines for the selection of precursor powders are developed.
Felix Großwendt, Anna Strauch, Jonathan Lentz, Arne Röttger, Rainer Fechte‐Heinen, Sebastian Weber, Werner Theisen   +6 more
wiley   +1 more source

The Exoplanet Population Observation Simulator. II -- Population Synthesis in the Era of Kepler [PDF]

, 2019
The collection of planetary system properties derived from large surveys such as Kepler provides critical constraints on planet formation and evolution.
Apai, Daniel, Ciesla, Fred J., Emsenhuber, Alexandre, Mordasini, Christoph, Mulders, Gijs D., Pascucci, Ilaria   +5 more
core   +3 more sources

Inside-out Planet Formation. IV. Pebble Evolution and Planet Formation Timescales [PDF]

The Astrophysical Journal, 2018
Abstract Systems with tightly packed inner planets (STIPs) are very common. Chatterjee & Tan proposed Inside-out Planet Formation (IOPF), an in situ formation theory, to explain these planets. IOPF involves sequential planet formation from pebble-rich rings that are fed from the outer disk and trapped at the pressure maximum ...
Zhaohuan Zhu, Tilman Birnstiel, Andrew N. Youdin, Xiao Hu, Xiao Hu, Subhanjoy Mohanty, Jonathan C. Tan, Sourav Chatterjee   +7 more
openaire   +6 more sources

Investigation of Solid‐Solution Phase Formation in AlCuNiSi Medium Entropy Alloys and its Effect on Microstructural, Thermal, and Microhardness Properties

Advanced Engineering Materials, EarlyView.
This study focuses on synthesizing equiatomic AlCuNiSi medium‐entropy alloys using mechanical alloying for advanced industrial applications. Continuous milling leads to grain refinement and the formation of stable BCC/FCC solid‐solution phases, resulting in enhanced mechanical properties. A unique Si‐rich solid‐solution phase is observed, which did not
Mustafa Okumuş, Mehmet Emin Demir, Celal Onat   +2 more
wiley   +1 more source

Gap formation in a self-gravitating disk and the associated migration of the embedded giant planet [PDF]

, 2013
We present the results of our recent study on the interactions between a giant planet and a self-gravitating gas disk. We investigate how the disk's self-gravity affects the gap formation process and the migration of the giant planet.
Liu, Huigen, Wittenmyer, Robert A., Zhang, Hui, Zhou, Ji-Lin   +3 more
core   +2 more sources

Collisions of Planetesimals and Formation of Planets [PDF]

Proceedings of the International Astronomical Union, 2015
AbstractWe present preliminary results of models of terrestrial planet formation using on the one hand classical numerical integration of hundreds of small bodies on CPUs and on the other hand—for comparison—the results of our GPU code with thousands of small bodies which then merge to larger ones.
Christoph Schäfer, Áron Süli, Thomas I. Maindl, Rudolf Dvorak, Roland Speith, Christoph Burger   +5 more
openaire   +2 more sources

A Simulative Approach for the Prediction of Mesoscale Residual Stress Fields in Solution‐Strengthened Ferritic Ductile Iron

Advanced Engineering Materials, EarlyView.
This study presents a 3D representative volume element‐based simulation approach to predict mesoscopic residual stress and strain fields in silicon solid solution‐strengthened ductile cast iron. By modeling phase transformation kinetics with an enhanced Johnson–Mehl–Avrami–Kolmogorov model, the effects of varying cooling rates on residual stresses are ...
Lutz Horbach, Oliver Schenk, Valérian Iss, Ali Rajaei, Jiali Zhang, Felix Weber, Christoph Broeckmann   +6 more
wiley   +1 more source

Overcoming migration during giant planet formation

, 2007
In the core accretion model, gas giant formation is a race between growth and migration; for a core to become a jovian planet, it must accrete its envelope before it spirals into the host star.
Edward W. Thommes, Leif Nilsson, Lynden-Bell D., Norman Murray   +3 more
core   +1 more source