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Article
Topology optimization for improving stability of a rotating thin plate
Increasing the critical angular speed of a rotating structure can enlarge working range and enhance operating safety. To achieve this purpose, a topology optimization approach is proposed to increase the criti...
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Article
Topology optimization design of Chladni patterns for vibration mode manipulability
Classical Chladni patterns (CPs) are visual representations of eigenvectors, which have a wide range of applications in vibration analysis, instrument design, particle manipulation and separation. Homogeneous ...
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Article
Open AccessSelf-bridging metamaterials surpassing the theoretical limit of Poisson’s ratios
A hallmark of mechanical metamaterials has been the realization of negative Poisson’s ratios, associated with auxeticity. However, natural and engineered Poisson’s ratios obey fundamental bounds determined by ...
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Article
Effects of Nitrogen Reduction and Optimized Fertilization Combined with Straw Return on Greenhouse Gas Emissions and Crop Yields of a Rice–Wheat Rotation System
Straw return and optimized nitrogen fertilizer application are common agronomic measures used in agricultural production, but the greenhouse effect these measures induce is often ignored. In this study, four t...
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Article
Correction: On projection methods, convergence and robust formulations in topology optimization
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Article
Characteristics of Winter Wheat Evapotranspiration in Eastern China and Comparative Evaluation of Applicability of Different Reference Evapotranspiration Models
The humid region of eastern China is an extensive winter wheat planting area, and evapotranspiration (ET) is the dominant parameter for stabilizing agricultural production; the objectives of the study were to ...
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Article
Ultra-broadband edge-state pair for zigzag-interfaced valley Hall insulators
The existence of a single topologically protected edge state in the first bulk bandgap for acoustic/elastic valley Hall insulators (VHIs) with zigzag interface configurations (ZICs) is well known. However, in ...
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Article
Temporal-spatial variations, source apportionment, and ecological risk of trace elements in sediments of water-level-fluctuation zone in the Three Gorges Reservoir, China
The Three Gorges Reservoir (TGR) plays a crucial role in providing electricity for mega-cities across China. However, since the impoundment was completed in 2006, attention to environmental concerns has also b...
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Article
Open AccessUltra-coherent nanomechanical resonators based on inverse design
Engineered micro- and nanomechanical resonators with ultra-low dissipation constitute a promising platform for various quantum technologies and foundational research. Traditionally, the improvement of the reso...
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Article
Numerical investigation of stiffness and buckling response of simple and optimized infill structures
This study systematically investigates stiffness and buckling response of finite structures consisting of repeated unit cells of a reference truss lattice microstructure and a topology optimized microstructure...
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Article
Shape preserving design of thermo-elastic structures considering geometrical nonlinearity
Thermal stress is an important design factor that will influence structural responses and cause local war** deformations. In this paper, such temperature variation effect is considered in the structural opti...
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Article
Shape preserving design of geometrically nonlinear structures using topology optimization
Subparts of load carrying structures like airplane windows or doors must be isolated from distortions and hence structural optimization needs to take such shape preserving constraints into account. The paper e...
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Article
Drying characteristics of hui ink at 25 °C and 35 °C
Temperature and humidity are the main factors affecting the drying of Hui ink. For the experiment, fresh Hui ink billets from two big ink industries were selected. We tried to find the fast and efficient dryin...
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Article
Length scale and manufacturability in density-based topology optimization
Since its original introduction in structural design, density-based topology optimization has been applied to a number of other fields such as microelectromechanical systems, photonics, acoustics and fluid mec...
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Article
Open AccessFabrication and characterization of well-aligned plasmonic nanopillars with ultrasmall separations
We show the fabrication of well-aligned gold and silver nanopillars with various array parameters via interference lithography followed by ion beam milling and compare the etching rates of these two metallic m...
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Article
Discontinuous Galerkin solution of a phase-field model in isothermal chemical vapor infiltration of SiC
The microstructure evolution of the isothermal chemical vapor infiltration (ICVI) of silicon carbide (SiC) from methyltrichlorosilane (MTS) is simulated by a phase-field model which is implemented numerically ...
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Chapter and Conference Paper
Precipitation Control for Mixed Solution Based on Fuzzy Adaptive Robust Algorithm
Fuzzy adaptive robust control algorithm was proposed for a class of uncertain nonlinear systems based on Lyapunov’s stability theory. The system was divided into nominal model and lumped disturbance term which...
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Chapter and Conference Paper
Study of Automatic Separation System of Coal and Gangue by IR Image Recognition Technology
Separation of coal and gangue is an important procedure in coal production. Present separating technology has such defects as low efficiency, high pollution, high energy consumption, and high cost. Based on th...
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Article
Preparation of the water-soluble chitosan-coated oxidized regenerated cellulose gauze
A water-soluble chitosan-coated oxidized regenerated cellulose (ORC) gauze was prepared by the oxidation of a viscose gauze with NO2/CCl4 and subsequent treatment with a solution of chitosan in aqueous acetic aci...
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Article
On projection methods, convergence and robust formulations in topology optimization
Mesh convergence and manufacturability of topology optimized designs have previously mainly been assured using density or sensitivity based filtering techniques. The drawback of these techniques has been gray ...
