34 Result(s)

Article

EVM and achievable data rate analysis of clipped OFDM signals in visible light communication

Orthogonal frequency division multiplexing (OFDM) has been considered for visible light communication (VLC); thanks to its ability to boost data rates as well as its robustness against frequency-selective fadi...

Zhenhua Yu, Robert J Baxley, Guo Tong Zhou in EURASIP Journal on Wireless Communications… (2012)

Article

Influence of natural deposition plane orientation on oedometric consolidation behavior of three typical clays from southeast coast of China

The parameters obtained from oedometric consolidation tests are commonly used in the development of constitutive modeling and for engineering practice. This paper focuses on the influence of the natural deposi...

Qi-yin Zhu, Yin-fu **, Zhen-yu Yin… in Journal of Zhejiang University SCIENCE A (2013)

Article

Interval multiobjective optimization of structures based on radial basis function, interval analysis, and NSGA-II

To improve the multiple performance indices of practical engineering structures under uncertainties, an interval constrained multiobjective optimization model was constructed with structural performance indice...

** Cheng, Gui-fang Duan, Zhen-yu Liu… in Journal of Zhejiang University SCIENCE A (2014)

Article

A semi-analytical state-space approach for 3D transient analysis of functionally graded material cylindrical shells

A good understanding of the mechanical behavior of functionally graded material (FGM) cylindrical shells is necessary for designers and researchers. However, the 3D transient response of FGM cylindrical shells...

Xu Liang, Hai-lei Kou, Guo-hua Liu… in Journal of Zhejiang University-SCIENCE A (2015)

Article

Distributed indeterminacy evaluation of cable-strut structures: formulations and applications

The indeterminacy evaluation is an effective method for system identification; it can predict the mechanical behaviors of flexible structures in the primary design. However, the conventional indeterminacy eval...

**-yu Zhou, Wu-jun Chen, Bing Zhao… in Journal of Zhejiang University-SCIENCE A (2015)

Article

A numerical study on the high-velocity impact behavior of pressure pipes

Pressure pipes are widely used in modern industry with some in potentially dangerous situations of explosion and impact. The security problems of these pipes when subjected to impact have attracted a lot of at...

Zhen-yu Wang, Yang Zhao, Guo-wei Ma, Zhi-guo He in Journal of Zhejiang University-SCIENCE A (2016)

Article

Direct reliability-based design optimization of uncertain structures with interval parameters

In order to enhance the reliability of an uncertain structure with interval parameters and reduce its chance of function failure under potentially critical conditions, an interval reliability-based design opti...

** Cheng, Ming-yang Tang, Zhen-yu Liu… in Journal of Zhejiang University-SCIENCE A (2016)

Article

Optimization of Uncertain Structures with Interval Parameters Considering Objective and Feasibility Robustness

For the purpose of improving the mechanical performance indices of uncertain structures with interval parameters and ensure their robustness when fluctuating under interval parameters, a constrained interval r...

** Cheng, Zhen-Yu Liu, Jian-Rong Tan… in Chinese Journal of Mechanical Engineering (2018)

Article

Research on 3D building information extraction and image post-processing based on vehicle LIDAR

Taking the elevation point cloud data of buildings as an object, this paper proposed a 3D reconstruction method. By using the simple clustering method, the vertices of a plane with similar normal vector compon...

Peng Cang, Zhenglin Yu in EURASIP Journal on Image and Video Processing (2018)

Article

Practice of artificial intelligence in geotechnical engineering

岩土材料的复杂和不确定性致使传统理论在模拟 和预测岩土工程问题经常显得无能为力。**年 来, 随着人工智能和大数据技术的快速发展, 人 工智能技术在岩土工程领域有了广泛应用, 例如 岩土参数的优化智能识别和预测、边坡变形的长 期预测、基坑开挖过程变形的实时监测和预测以 及盾构隧道的变形和盾构机刀盘参数的预测和 更新等。为此, 本专辑收集了在该研究领域具有 代表性的研究成果, 介绍了人工智能技术在岩土 工程领域的进展和...

Zhen-yu Yin, Yin-fu **, Zhong-qiang Liu in Journal of Zhejiang University-SCIENCE A (2020)

Article

Finite element implementation and application of a sand model in micropolar theory

In traditional finite element failure analyses of geotechnical structures, the micro grain rotations cannot be modelled and numerical solutions are mesh dependent. In this study, a user element including rotat...

Jiangxin Liu, Zhen-Yu Yin, Lijian Wu, Pierre-Yves Hicher in SN Applied Sciences (2021)

Article

Influence of platform position on stray grain nucleation in Ni-based single-crystal dummy blade clusters

Stray grains are the most severe of the solidification defects that occur in the industrial single-crystal blade preparation process. In this study, a single-crystal dummy blade cluster with different crystal ...

Zhen-yu Yang, Chen-guang Liu, Song-song Hu, Su-jie Zheng, Yu-shi Luo… in China Foundry (2021)

Article

Remaining Useful Life Estimation of Aircraft Engines Based on Deep Convolution Neural Network and LightGBM Combination Model

Accurately predicting the remaining useful life (RUL) of aero-engines is of great significance for improving the reliability and safety of aero-engine systems. Because of the high dimension and complex feature...

Lijun Liu, Lan Wang, Zhen Yu in International Journal of Computational Intelligence Systems (2021)

Article

Study of Cracking Mechanism and Wear Resistance in Laser Cladding Coating of Ni-based Alloy

Nickel-based alloy coatings were widely used for the remanufacturing of dies and moulds by laser cladding, but the crack sensitivity would be increase due to the higher strength and hardness, which reduced the...

Zhenglei Yu, Lunxiang Li, Deqiang Zhang… in Chinese Journal of Mechanical Engineering (2021)

Article

Forecasting the impact of environmental stresses on the frequent waves of COVID19

A novel approach to link the environmental stresses with the COVID-19 cases is adopted during this research. The time-dependent data are extracted from the online repositories that are freely available for kno...

Zhenhua Yu, Abdel-Salam G. Abdel-Salam, Ayesha Sohail, Fatima Alam in Nonlinear Dynamics (2021)

Article

Large deformation analysis in geohazards and geotechnics

岩土工程破坏以及灾害往往伴随着大变形问题。**年来, 随着计算机技术的快速发展, 大变形数值模拟方法在岩土工程领域有了广泛应用, 例如利用物质点法(MPM)或者光滑粒子流体动力学法(SPH)模拟边坡垮塌、软土地基中的基础沉降或失稳, 利用耦合拉格朗日-欧拉法(CEL)分析隧道破坏对临**地下结构物的影响等。为此, 本专辑收集了在该研究领域具有代表性的研究成果, 介绍了岩土工程大变形模拟技术的进展和未来发展潜力, 希望能...

Zhen-yu Yin, Yin-fu **, Xue Zhang in Journal of Zhejiang University-SCIENCE A (2021)

Article

Improvement on PDP Evaluation Performance Based on Neural Networks and SGDK-means Algorithm

With the purpose of improving the PDP (policy decision point) evaluation performance, a novel and efficient evaluation engine, namely XDNNEngine, based on neural networks and an SGDK-means (stochastic gradient...

Fan Deng, Zhenhua Yu, Houbing Song, Liyong Zhang, ** Song, Min Zhang… in Soft Computing (2022)

Article

Pomelo Peel-Inspired 3D-Printed Porous Structure for Efficient Absorption of Compressive Strain Energy

The porous structure in pomelo peel is believed to be responsible for the protection of its fruit from damage during the free falling from a tree. The quantitative understanding of the relationship between the...

Baisong Yang, Wenhui Chen, Renlong **n, **aohong Zhou… in Journal of Bionic Engineering (2022)

Article

Super-Tough and Environmentally Stable Aramid. Nanofiber@MXene Coaxial Fibers with Outstanding Electromagnetic Interference Shielding Efficiency

Article

A spread model of COVID-19 with some strict anti-epidemic measures

In the absence of specific drugs and vaccines, the best way to control the spread of COVID-19 is to adopt and diligently implement effective and strict anti-epidemic measures. In this paper, a mathematical spr...

Bo Yang, Zhenhua Yu, Yuanli Cai in Nonlinear Dynamics (2022)