arXiv - PHYS - Classical Physics最新文献_第6页

Design and Reprogrammability of Zero Modes in 2D Materials from a Single Element 二维材料中零模式的设计与单元素可重编程性

arXiv - PHYS - Classical Physics Pub Date : 2024-07-06 DOI: arxiv-2407.04934

Daniel Revier, Molly Carton, Jeffrey I. Lipton

{"title":"Design and Reprogrammability of Zero Modes in 2D Materials from a Single Element","authors":"Daniel Revier, Molly Carton, Jeffrey I. Lipton","doi":"arxiv-2407.04934","DOIUrl":"https://doi.org/arxiv-2407.04934","url":null,"abstract":"Mechanical extremal materials, a class of metamaterials that exist at the\u0000bounds of elastic theory, possess the extraordinary capability to engineer any\u0000desired elastic behavior by harnessing mechanical zero modes -- deformation\u0000modes that demand minimal or no elastic energy. However, the potential for\u0000arbitrary construction and reprogramming of metamaterials remains largely\u0000unrealized, primarily due to significant challenges in qualitatively\u0000transforming zero modes within the confines of existing metamaterial design\u0000frameworks. In this work, we show a method for explicitly defining and in situ\u0000reprogramming zero modes of two-dimensional extremal materials by employing\u0000straight-line mechanisms (SLMs) and planar symmetry, which prescribe and\u0000coordinate the zero modes, respectively. We design, test, and reprogram\u0000centimeter-scale isotropic, orthotropic, and chiral extremal materials by\u0000reorienting the SLMs in place, enabling these materials to smoothly and\u0000reversibly interpolate between extremal modalities (e.g., unimode to bimode)\u0000and material properties (e.g., negative to positive Poisson's ratios) without\u0000changing the metamaterial's global structure. Our methodology provides a\u0000straightforward and explicit strategy for the design and tuning of all\u0000varieties of two-dimensional extremal materials, enabling arbitrary and dynamic\u0000mechanical metamaterial construction to completely cover the gamut of elastic\u0000properties.","PeriodicalId":501482,"journal":{"name":"arXiv - PHYS - Classical Physics","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141568655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An embedding-aware continuum thin shell formulation 嵌入感知连续薄壳公式

arXiv - PHYS - Classical Physics Pub Date : 2024-07-05 DOI: arxiv-2407.04894

Abhishek Ghosh, Andrew McBride, Zhaowei Liu, Luca Heltai, Paul Steinmann, Prashant Saxena

{"title":"An embedding-aware continuum thin shell formulation","authors":"Abhishek Ghosh, Andrew McBride, Zhaowei Liu, Luca Heltai, Paul Steinmann, Prashant Saxena","doi":"arxiv-2407.04894","DOIUrl":"https://doi.org/arxiv-2407.04894","url":null,"abstract":"Cutting-edge smart materials are transforming the domains of soft robotics,\u0000actuators, and sensors by harnessing diverse non-mechanical stimuli, such as\u0000electric and magnetic fields. Accurately modelling their physical behaviour\u0000necessitates an understanding of the complex interactions between the\u0000structural deformation and the fields in the surrounding medium. For thin shell\u0000structures, this challenge is addressed by developing a shell model that\u0000effectively incorporates the three-dimensional field it is embedded in by\u0000appropriately accounting for the relevant boundary conditions. This study\u0000presents a model for the nonlinear deformation of thin hyperelastic shells,\u0000incorporating Kirchhoff-Love assumptions and a rigorous variational approach.\u0000The shell theory is derived from 3D nonlinear elasticity by dimension reduction\u0000while preserving the boundary conditions at the top and bottom surfaces of the\u0000shell. Consequently, unlike classical shell theories, this approach can\u0000distinguish between pressure loads applied at the top and bottom surfaces, and\u0000delivers a platform to include multi-physics coupling. Numerical examples are\u0000presented to illustrate the theory and provide a physical interpretation of the\u0000novel mechanical variables of the model.","PeriodicalId":501482,"journal":{"name":"arXiv - PHYS - Classical Physics","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141568654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Singular viscoelastic perturbation to soft lubrication 软润滑的奇异粘弹性扰动

arXiv - PHYS - Classical Physics Pub Date : 2024-07-05 DOI: arxiv-2407.04319

Bharti BhartiUiO, LOMA, Quentin FerreiraLOMA, Aditya JhaLOMA, Andreas CarlsonUiO, David S. DeanLOMA, Yacine AmaroucheneLOMA, Tak Shing ChanUiO, Thomas SalezLOMA

引用次数: 0

Playing Lato-lato is Difficult and This is Why 拉托球员很难打，原因就在这里

arXiv - PHYS - Classical Physics Pub Date : 2024-07-03 DOI: arxiv-2407.02951

Fansen Candra, Zainul Abidin

引用次数: 0

Effects of different loading on the bifurcation of annular elastic rods: theory vs. experiments 不同加载对环形弹性杆分叉的影响：理论与实验

arXiv - PHYS - Classical Physics Pub Date : 2024-07-03 DOI: arxiv-2407.02897

Matteo Gaibotti, Davide Bigoni, Arsenio Cutolo, Massimiliano Fraldi, Andrea Piccolroaz

引用次数: 0

N-body linear force law allowing analytic solutions 允许解析解的 N 体线性力定律

arXiv - PHYS - Classical Physics Pub Date : 2024-07-02 DOI: arxiv-2407.02358

Joseph West, Sean P. Bartz

引用次数: 0

The Electric Force Between Two Straight Parallel Resistive Wires Carrying DC-Currents in the Asymptotic Limit of Infinitely Thin Wires 在无限细导线的渐近极限中，两根携带直流电流的平行直电阻导线之间的电场力

arXiv - PHYS - Classical Physics Pub Date : 2024-07-02 DOI: arxiv-2407.02541

Udo Ausserlechner

引用次数: 0

A convolutional model for estimating the junction temperatures of SiC MOSFET transistors 用于估算碳化硅 MOSFET 晶体管结温的卷积模型

arXiv - PHYS - Classical Physics Pub Date : 2024-07-01 DOI: arxiv-2407.01078

Ali El ArabiLEMTA, Denis MailletLEMTA, Nicolas BletLEMTA, Benjamin Remy

{"title":"A convolutional model for estimating the junction temperatures of SiC MOSFET transistors","authors":"Ali El ArabiLEMTA, Denis MailletLEMTA, Nicolas BletLEMTA, Benjamin Remy","doi":"arxiv-2407.01078","DOIUrl":"https://doi.org/arxiv-2407.01078","url":null,"abstract":"The junction temperature is a very important parameter for monitoring power\u0000electronics converters based on MOSFET transistors. They offer the possibility\u0000of switching at relatively higher frequencies than other transistors like\u0000IGTBTs. However, the electrical parameters of MOSFETs are highly thermally\u0000dependent. The thermo-dependence of MOSFET electrical parameters is rarely\u0000taken into consideration when implementing control strategies, for many\u0000technological reasons, such as the difficulty of measuring the junction\u0000temperature. In practice, the junction temperature of transistors is\u0000inaccessible for direct measurement. The presence of a gel covering the chips,\u0000that provides electrical and thermal insulation, makes measurement by infrared\u0000thermography impossible. Furthermore, direct thermocouple measurement cannot be\u0000implemented due to the electromagnetic disturbances in the environment. Several\u0000researchers have attempted to correlate chip temperature with thermosensitive\u0000electrical parameters. In the present work, a thermal convolutive model has\u0000been developed to estimate the junction temperatures of two MOSFET transistors\u0000belonging to the same electronic circuit from external temperature measurements\u0000in two well-chosen locations (far away enough from the junction to avoid\u0000electromagnetic interference), using also the measured power dissipated on each\u0000chip. The thermal coupling between the two transistors has been considered in\u0000the form of mutual transmittances. The model was first calibrated using\u0000three-dimensional numerical simulations in COMSOL Multiphysics, followed by an\u0000experimental study. The results are very promising, illustrating the robustness\u0000of the convolutional model.","PeriodicalId":501482,"journal":{"name":"arXiv - PHYS - Classical Physics","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141510232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Chaos in undamped, forced oscillators via stroboscopic maps 通过频闪图研究无阻尼受迫振荡器中的混沌现象

arXiv - PHYS - Classical Physics Pub Date : 2024-06-29 DOI: arxiv-2407.02526

Ronaldo S. S. Vieira, Luiz H. R. Daniel, Marcus A. M. de Aguiar

引用次数: 0

Electrostatic potential of a uniformly charged disk through Green's theorem 通过格林定理计算均匀带电圆盘的静电势

arXiv - PHYS - Classical Physics Pub Date : 2024-06-29 DOI: arxiv-2407.00392

Alina E. Sagaydak, Zurab K. Silagadze

引用次数: 0