Results 21 to 30 of about 62,089 (297)

Modelling methods for complex interconnection of very large floating structures based on discrete-module-beam hydroelasticity theory

open access: yesZhongguo Jianchuan Yanjiu, 2022
ObjectiveThe aim of this paper is to proposes new methods for modelling a very large floating structure (VLFS) with complex connections in the framework of the discrete-module-beam (DMB) hydroelasticity theory, and makes a comparison with the existing ...
Yongqiang CHEN, Yu ZHANG, Xiantao ZHANG
doaj   +1 more source

Effect of the matrix behavior on the damage of ethylene–propylene glass fiber reinforced composite subjected to high strain rate tension [PDF]

open access: yes, 2012
This study investigates the origin of the strain rate effect on the mechanical behavior of a discontinuous glass fiber reinforced ethylene–propylene copolymer (EPC) matrix composite.
FITOUSSI, Joseph   +2 more
core   +1 more source

Dynamic modeling and characteristic analysis of the periodically coupled plate structure based on the dynamic stiffness method

open access: yesResults in Physics, 2018
In this paper, the dynamic model of periodically coupled plate structure is formulated by the dynamic stiffness method (DSM). Geometrical construction is assumed to vary periodically in the whole plate structure.
Chunyu Zhang   +5 more
doaj   +1 more source

Dynamic stiffness of articular cartilage and potential repair materials [PDF]

open access: yes, 2012
Cartilage has limited potential for self repair. Therefore, articular cartilage lesions often lead to early osteoarthritis. Early clinical results of cartilage replacement procedures such as autologous matrix-induced chondrogenesis (AMIC) seem promising,
Ronken, Sarah
core   +1 more source

Time-Varying Total Stiffness Matrix of a Rigid Machine Spindle-Angular Contact Ball Bearings Assembly: Theory and Analytical/Experimental Verifications

open access: yesShock and Vibration, 2011
A lagrangian formulation is presented for the total dynamic stiffness and damping matrices of a rigid rotor carrying noncentral rigid disk and supported on angular contact ball bearings (ACBBs).
Fawzi M.A. El-Saeidy
doaj   +1 more source

Dynamic stiffness of nonlocal damped nano-beams on elastic foundation [PDF]

open access: yes, 2021
Free and forced bending vibration of damped nonlocal nano-beams resting on an elastic foundation is investigated. Two types of nonlocal damping models, namely, strain-rate-dependent viscous damping and velocity-dependent viscous damping are considered. A
Danilo Karlicic, Sondipon Adhikari
core   +1 more source

Analytical Determination and Influence Analysis of Stiffness Matrix of Ball Bearing under Different Load Conditions

open access: yesMachines, 2022
Bearing stiffness, as one of the most important service characteristics for ball bearing, plays a crucial role in the bearing design and rotor dynamic analysis.
Qingbo Niu   +5 more
doaj   +1 more source

Exact and Direct Modeling Technique for Rotor-Bearing Systems with Arbitrary Selected Degrees-of-Freedom

open access: yesShock and Vibration, 1994
An exact and direct modeling technique is proposed for modeling of rotor-bearing systems with arbitrary selected degrees-of-freedom. This technique is based on the combination of the transfer and dynamic stiffness matrices. The technique differs from the
Shilin Chen, Michel Géradin
doaj   +1 more source

Finite Dynamic Elements and Modal Analysis

open access: yesShock and Vibration, 1993
A general modal analysis scheme is derived for forced response that makes use of high accuracy modes computed by the dynamic element method. The new procedure differs from the usual modal analysis in that the modes are obtained from a power series ...
N.J. Fergusson, W.D. Pilkey
doaj   +1 more source

Dynamic Modeling and Control of Antagonistic Variable Stiffness Joint Actuator

open access: yesActuators, 2021
This study aims to develop a novel decoupling method for the independent control of the position and stiffness of a variable stiffness joint actuator (VSJA), which has been proven to be able to vary its stiffness in a larger range than other variable ...
Ming Zhang   +6 more
doaj   +1 more source

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