Results 71 to 80 of about 3,377,986 (297)
Study on the Calculation Model of Free Point Depth of Circular Arc Well
Shiyou jixie, 2018 The calculation of the free point depth of tubular is of great significance to the entire workover process. The previous calculation model does not take the well inclination and dynamic friction factor into consideration, resulting in a large error ...
Xu Qinghai +4 more
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Geophysical Research LettersThe dynamic slip behavior of faults is strongly influenced by the thermal and hydraulic properties of pore fluids, which control thermal pressurization (TP) during seismic slip.
Chien‐Cheng Hung, André R. Niemeijer
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Fenmo yejin jishuThe friction properties and heat resistances of the iron-copper based powder metallurgy friction materials were tested by MM3000 friction and wear testing machine under 7 continuous braking conditions.
MA Ling +6 more
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Research on Nonlinear Dynamics Modeling and Simulation of Harmonic Gear Drive
Jixie chuandong, 2021 Due to the particularity of the structure，the hysteretic stiffness and dynamic friction belong to the inherent properties of harmonic gear drive. Traditional models consider the stiffness as a fixed stiffness or segmented stiffness model，and the friction
Yang Luo +4 more
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Inverse dynamics with rigid contact and friction [PDF]
Autonomous Robots, 2016 Inverse dynamics is used extensively in robotics and biomechanics applications. In manipulator and legged robots, it can form the basis of an effective nonlinear control strategy by providing a robot with both accurate positional tracking and active compliance.
Samuel Zapolsky, Evan M. Drumwright
openaire +2 more sources
Forced response of shrouded blades with a coupled static/dynamic approach [PDF]
, 2011 A coupled static-dynamic method is proposed and applied to bladed disks with shrouds, in order to calculate the nonlinear forced response in presence of friction damping in the frequency domain.
Zucca, Stefano +2 more
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Advanced Engineering Materials, EarlyView.This study examines how helicoidal architectures with different porosities respond to bending. Adjusting layer angle and spacing in 3D‐printed polymers reveals clear tradeoffs between stiffness, strength, and energy absorption. Experiments and simulations highlight designs that distribute stress effectively, offering pathways for optimizing lightweight
Praveenkumar Subhash Patil +2 more
wiley +1 more source
Financial Frictions and New Exporter Dynamics [PDF]
SSRN Electronic Journal, 2014 This article studies the role of financial frictions as a barrier to international trade. We study new exporter dynamics to identify how these frictions affect export decisions. We introduce a borrowing constraint and working capital requirements into a standard model of international trade, with exports more working capital intensive than domestic ...
David Kohn +2 more
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Advanced Engineering Materials, EarlyView.Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati +11 more
wiley +1 more source
Demo 03-02 Static vs. Sliding Friction
, 2001 This demonstration shows that the coefficient of static friction is greater than the coefficient of dynamic or sliding friction for the same two surfaces.
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