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Start Over Author "Xu Xiang" Journal applied mechanics and materials
115 results on '"Xu Xiang"'

1. Numerical Analysis on the Seismic Resistance of Steel Tube Columns Filled with Recycled Aggregate Concrete

Author

Wen Xian Feng, Lan Zeng, Xu Xiang Wang, and Feng Liu

Subjects
Aggregate (composite), Materials science, Axial compression, Numerical analysis, Steel tube, Core (manufacturing), Geotechnical engineering, General Medicine, Bearing capacity, Restoring force, Seismic resistance
Abstract

Horizontal bearing capacity and seismic resistance of Recycled aggregate Concrete Filled Steel Tube (RCFST) columns under low cyclic loads have been analyzed by nonlinear finite element software in this paper. A three-dimensional nonlinear finite element (FE) model was developed, and some parameters that affect the restoring force model of RCFST columns were studied, including axial compression ratio, steel ratio, steel yield strength, strength of core recycled aggregate concrete and recycled aggregate substitution rate. Analysis results show that, along with steel ratio, steel yield strength and recycled aggregate substitution rate increasing, seismic resistance of RCFST becomes better. However, the increase of core recycled aggregate concrete and axial compression ratio will weaken seismic resistance of RCFST columns.

Published
2013

2. Review on Detection and Localization of Underwater Target

Author

Shi Tao Wang, Yi Zheng, Xu Xiang, Yang Guang, and Yan Ting Yu

Subjects
Marine research, Engineering, business.industry, Foundation (engineering), Regional science, General Medicine, Underwater, China, business, Chinese academy of sciences
Abstract

Europe, the United States and China have conducted a lot of research on the detection and localization of underwater target. The United States, the typical representative among Europe and America, pays much attention to marine research and has a profound foundation. In China, Harbin Engineering University, Institute of Acoustics of Chinese Academy of Sciences and Northwestern Polytechnical University also have done a lot of research on target detection and localization. Overall, the United States of America and other developed countries temporarily precede China in underwater target detection and localization.

Published
2012

3. Research of System of Trailer Axle’s Function Test

Author

Wei Bin Wu, Kai Cheng Chen, Tian Sheng Hong, Xu Xiang Chen, and Shi Ting Yang

Subjects
Engineering, Correlation coefficient, business.industry, Trailer, General Medicine, Structural engineering, Servomotor, law.invention, Axle, law, Approximation error, Calibration, Hammer, business, Servo
Abstract

Axle is one of the most important parts related to the safety of trailer’s operation on the railroad. In China, the checking of axles is mainly through visual inspection and hammer examinations. The construction of an automation hardware system was simulated by Pro/E, including support, guide rail, sensor, AC servomotor and servo driver conformed to the model. Next, for controlling the operation of the entire system, LabVIEW was used to write a program and to control the rotation of servomotor. The pressure heads controlled by linkage system were utilized to load the axle; meanwhile, through the PCI of NI, the data of pressure and displacement was collected. After calibration, the relative error of pinpointing sensor was 5.207%, and the average relative error was about 1.4%. Analyzed by SPSS, the voltage-load formula's correlation coefficient R is greater than 0.994, while the significance is less than 0.05, showing the regression of great significance. Finally, the capabilities of the simulated axle, such as fatigue, stiffness, intensity and stress, were analyzed carefully.

Published
2010

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