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Recent Advance in Synaptic plasticity Modulation Techniques for Neuromorphic Applications

Nano-Micro Letters 2024年第10期16卷 403-434页

作者： Yilin Sun Huaipeng Wang Dan Xie School of Integrated Circuits and Electronics Beijing Institute of TechnologyBeijing 100081People's Republic of China School of Integrated Circuits Beijing National Research Center for Information Science and Technology(BNRist)Tsinghua UniversityBeijing 100084People's Republic of China

Manipulating the expression of synaptic plasticity of neuromorphic devices provides fascinating opportunities to develop hardware platforms for artifi-cial ***,great efforts have been devoted to exploring biomimetic mechanisms of plasticity simulation in the last few *** progress in various plasticity modulation techniques has pushed the research of synaptic electronics from static plasticity simulation to dynamic plasticity modulation,improving the accuracy of neuromorphic computing and providing strategies for implementing neuromorphic sensing ***,several fascinating strategies for synap-tic plasticity modulation through chemical techniques,device structure design,and physical signal sensing are *** chemical techniques,the underly-ing mechanisms for the modification of functional materials were clarified and its effect on the expression of synaptic plasticity was also *** on device structure design,the reconfigurable operation of neuromorphic devices was well demonstrated to achieve programmable neuromorphic ***,integrating the sensory units with neuromorphic processing circuits paved a new way to achieve human-like intelligent perception under the modulation of physical signals such as light,strain,and ***,considering that the relevant technology is still in the basic exploration stage,some prospects or development suggestions are put forward to promote the development of neuromorphic devices.

关键词： plasticity modulation dynamic plasticity Chemical techniques Programmable operation Neuromorphic sensing

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dynamic Plastic Analysis of Ship-Platform Collision

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China Ocean Engineering 1998年第1期13卷 23-32页

作者： Bao, YB Li, RP Gu, YN Shanghai Jiao Tong Univ Sch Naval Architecture & Ocean Engn Shanghai 200030 Peoples R China

This paper studies intensively the problems of ship-platform collision. The ship and platform are treated as one structural system connected with spring elements and then motion equation of the collision system is established. A nonlinear force-displacement relationship is derived for the simulation of local dent in a hit member and the yield surface of a dented tubular section is developed to consider the reduction of load carrying capacity of hit members. Large deformations, plasticity and strain-hardening of the beam-column element are taken into account by combining the elastic large displacement analysis theory with the plastic node method. The effect of the hydrodynamic forces acting on the platform, the rubber fender the property of the local dent and the buckling behavior of beam-column on collision are analyzed. The numerical simulation of the nonlinear dynamic response is carried out by Wilson theta method with updated Newton-Raphson iteration. And the numerical example of the dynamic response of a offshore platform in ship-platform collision is also present.

关键词： offshore platform collision strain-hardening dynamic plasticity

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