西南交通大学学报

Research Progress in Cyclic Deformation of Super-Elastic NiTi Shape Memory Alloy

KANG Guozheng

2011, 24(3): 355-364. doi: 10.3969/j.issn.0258-2724.2011.03.001

[Abstract](1348)

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Abstract:
The research progresses in cyclic deformation of super-elastic NiTi alloy in the last two decades were reviewed, with an emphasis on the changes in some important mechanical parameters, the evolution of residual strains, and behaviors of transformation ratcheting. Three typical cyclic constitutive m...

Mesoscopic Numerical Simulation of Bond Behavior of Ribbed Bars and Concrete

WANG Hailong|LIChaohong|XUGuangxing

2011, 24(3): 365-372. doi: 10.3969/j.issn.0258-2724.2011.03.002

[Abstract](1927)

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Abstract:
In order to research the failure mechanism of bond between ribbed bars and concrete and discuss the influence of rib outline on bond behavior at a meso-level, a 3-D mesoscopic numerical model for reinforced concrete was established with ANSYS parametric design language. This model is based on a meso...

Dynamic Responses of East Temple Pagoda of Subashi Temple under Seismic Loads

CHEN Wenwu, LIPengfei, LIANGTao, ZHANGYuxiang, ZHANGJingke

2011, 24(3): 373-378. doi: 10.3969/j.issn.0258-2724.2011.03.003

[Abstract](1460)

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Abstract:
Abstract: To better protect earthen heritage sites, software FLAC3D was used to analyze the seismic response of the east temple pagoda of the Subashi Temple, and the seismic-induced displacement and stresses of the pagoda and the acceleration amplification factor and Fourier spectra of seismic waves...

Influence of Differential Shrinkage on Long-Term Deflection of Long-Span Continuous Rigid Frame Bridge

ZHANG Yuntao, MENG Shaoping, LIU Anzhong

2011, 24(3): 379-384. doi: 10.3969/j.issn.0258-2724.2011.03.004

[Abstract](1346)

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Abstract:
In order to fully consider the influence of differential shrinkage on the long-term deflection of a long-span continuous rigid-frame concrete bridge, formulas for calculating equivalent shrinkage strain were deduced based on a normal section assumption. Bar-system FEM (finite element method) was use...

Simulation of Vehicle-Bridge Coupling Vibration for Yujiang River Bridge on Nanning-Guangzhou High-Speed Railway

CUIShengai|SHAN Deshan|ZHUBing

2011, 24(3): 385-390. doi: 10.3969/j.issn.0258-2724.2011.03.005

[Abstract](2098)

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Abstract:
In order to research the coupled vibration effects when a train runs through a long-span twin tower steel truss cable-stayed bridge at a high speed to provide a reference for the design of the same type of bridges, a numerical simulation model for coupled vibration was set up by taking Yujiang River...

Experimental Investigation of Friction Properties between CFRP Main Cable and Saddle of Suspension Bridge

HOU Suwei, ZHUGE Ping, QIANG Shizhong, LI Cuijuan

2011, 24(3): 391-397. doi: 10.3969/j.issn.0258-2724.2011.03.006

[Abstract](1314)

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Abstract:
In order to investigate the friction properties between CFRP (carbon fiber reinforced plastics) main cable and saddle of a suspension bridge, the contact geometry and contact characteristics of main cable and saddle were analyzed theoretically. From the related formula for calculating the friction c...

Lumped Mass Model for Dynamic Performance Simulation of Pantograph

ZHOU Ning, ZHANG Weihua, WANG Dong

2011, 24(3): 398-403. doi: 10.3969/j.issn.0258-2724.2011.03.007

[Abstract](1726)

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Abstract:
The pantograph was simplified as a model with two and three lumped masses to measure the dynamic performance of the pantograph. The parameters of the model, including the masses, stiffness and damping of the pan-head, the upper frame and the lower frame were identified experimentally. The dynamic co...

Fluid-Solid Coupling Vibration of Train Passing through Platform at High Speed in Cross Wind

CUITao, ZHANG Weihua

2011, 24(3): 404-408. doi: 10.3969/j.issn.0258-2724.2011.03.008

[Abstract](1486)

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Abstract:
In order to evaluate whether a train can pass through a platform safely at high speed in cross wind, the air-actuated response in this case was studied with both train aerodynamics and train system dynamics considering the track irregularity and the attitude changes of trains caused by cross wind. T...

Motion Stability Analysis of Carrier Helicopter Traction System on Deck

ZHOU Lijie, WANG Nengjian, ZHANG Defu

2011, 24(3): 409-414. doi: 10.3969/j.issn.0258-2724.2011.03.009

[Abstract](1549)

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Abstract:
In order to study the dynamic performance of a helicopter traction system on deck, and analyze the factors influencing its motion stability, a dynamic model of the traction system was developed. In the model, the inertial force of the helicopter traction system produced by coupled roll-pitch-heave m...

Locomotion Analysis and Simulation of Piezo-Driven Miniature Robot

DU Qiliang, ZHANG Qin, TIAN Lianfang, AOYAMA Hisayuki

2011, 24(3): 415-421. doi: 10.3969/j.issn.0258-2724.2011.03.010

[Abstract](1067)

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Abstract:
A PZT(piezoelectric ceramic)-driven electromagnetic miniature robot which could fulfill the requirement of large range, high precision and omni-direction in a desktop factory was presented. With the cooperation of two electromagnets, the robot was able to move forward/backward, turn left/right, and ...

Investigations of Wind Loads on a New Type of Self-Supporting Four Pipe Steel Chimney

YU Kunlong, WANG Weihua, HUANG Hanjie, FANZhenzhong

2011, 24(3): 421-426. doi: 10.3969/j.issn.0258-2724.2011.03.011

[Abstract](1694)

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Abstract:
To reveal the wind load resistance characteristics of chimneys, wind tunnel testing and theoretical analysis were used to investigate the wind loads on a new type of self-supporting four-pipe steel chimney of 240 m height. With a large-scale rigid physical model, surface pressure measurement in a si...

Design and Implementation of Mobile Agent-Based Spatial Information Sharing Service

ZHU Jun, HU Ya, CAO Yungang, GUO Fangtao

2011, 24(3): 427-433. doi: 10.3969/j.issn.0258-2724.2011.03.012

[Abstract](1153)

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Abstract:
To improve the efficiency of geospatial data cooperation under distributed, heterogeneous and dynamic environments, the mobile agent (MA) technology was used to construct geospatial information sharing service (GISS). The characteristics of the MA technology and the advantages of its application to ...

Construction and Adjustment Method for CPⅢ Trigonometric Leveling Network of High-Speed Railway

LIU Chenglong, YANG Xuefeng, LU Jiankang, HE Bo

2011, 24(3): 434-440. doi: 10.3969/j.issn.0258-2724.2011.03.013

[Abstract](1528)

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Abstract:
In order to establish CPIII vertical control network in high-speed railway with high efficiency and accuracy, a CPIII trigonometric leveling network method based on difference method was proposed, which was performed simultaneously during establishing the horizontal control network. In this method, ...

Comprehensive Comparison and Analysis of VRS Dynamic Stochastic Modeling

XU Rui, HUANG Dingfa, CHEN Weifeng, LIAO Hua, FAN Lingchun

2011, 24(3): 440-444. doi: 10.3969/j.issn.0258-2724.2011.03.014

[Abstract](1280)

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Abstract:
In order to find an optimum stochastic modeling method for VRS (virtual reference station) systems, the principles of four stochastic models used in a real-time dynamic data processing system, including the standard stochastic model, the elevation-dependent model, the SNR (signal noise ratio) model ...

Features and Minimum Capacity of Active Compensation in Cophase Power Supply

ZHANG Xiufeng, XIEJie

2011, 24(3): 445-450. doi: 10.3969/j.issn.0258-2724.2011.03.015

[Abstract](1310)

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Abstract:
In order to determine the minimum capacity of an active compensation device, compensation current, compensation capacity and active filter capacity were analyzed. The research result shows that the capacity of an active compensation device has no matter with the load access port. To change the load ...

Microwave Imaging of Perfectly Conducting Cylinder Based on Time Reversal and Single Antenna

ZHONG Xuanming, LIAO Cheng

2011, 24(3): 451-455. doi: 10.3969/j.issn.0258-2724.2011.03.016

[Abstract](1419)

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To reduce the effects of multi-path and highly reflective scatterers in a clutter environment, a microwave imaging algorithm for a perfectly electrical conducting target was proposed based on the adaptive focusing characteristic of time reversal (TR). In this algorithm, the contour of an unknown tar...

Hybrid Page Scoring Algorithm Based on Centrality and PageRank

QIAO Shaojie, PENG Jing, LI Tianrui, LI Hong, LI Taiyong, WANG Chao

2011, 24(3): 456-460. doi: 10.3969/j.issn.0258-2724.2011.03.017

[Abstract](1335)

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Abstract:
In order to score Web pages in an effective manner, a new page scoring algorithm, CentralRank, was proposed based on centrality measures, including degree, betweenness and closeness, and the PageRank algorithm. The CentralRank algorithm computes the importance of pages in Web social networks based o...

Incremental Algorithm of Pawlak Reduction Based on Attribute Order

GUAN Lihe, WANG Guoyin, YU Hong

2011, 24(3): 461-468. doi: 10.3969/j.issn.0258-2724.2011.03.018

[Abstract](1125)

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Abstract:
In order to update the attribute reduction of dynamic decision tables, an incremental algorithm of Pawlak reduction with a given attribute order was proposed based on a discernibility matrix element set. To different newly added objects this algorithm updates the discernibility matrix element set qu...

LDPC-Coded Cooperative System Based on Joint Iterative Decoding

ZHANG Shunwai, YANG Fengfan, ZONG Peng

2011, 24(3): 469-475. doi: 10.3969/j.issn.0258-2724.2011.03.019

[Abstract](1254)

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In order to improve the performances of a communication system, new coded cooperative communication schemes employing regular LDPC (low-density parity-check code) and irregular systematic LDPC codes respectively were proposed, and the methods of constructing the double LDPC codes used by source and ...

DistributedDetectionAlgorithmforLocal-BottleneckNodes ofWirelessSensorNetwork

LILei, LIFengrong, HUANG Heqing

2011, 24(3): 475-480.

[Abstract](1079)

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Abstract:
Toreducenetworkburden,theconceptoflocal-bottlenecknode-wasproposed, andadistributeddetectionalgorithmforlocal-bottlenecknodeswasgiven.Local-bottleneck nodeshaveasimilareffectonnetworkperformancewithbottlenecknodes,buttheirdetection ismorepracticable.Especially,toanetworkdeployedinabelt-typearea,itis...

Variational Inequality Model and Algorithm for Stream Line Network Optimization

ZHANG Jin, WANG Kun

2011, 24(3): 481-487. doi: 10.3969/j.issn.0258-2724.2011.03.021

[Abstract](1791)

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Abstract:
A simplified variational inequality model and its projection algorithm were proposed to optimize stream line networks that are complex hypernetworks. In the model, the objective is the matching degree between supply and demand, and the constraints are capacities and resources, and the model is conve...

Memetic Algorithm for Aircraft Arrival Sequencing and Scheduling Problem

MENG Xiangwei, ZHANG Ping, LI Chunjin

2011, 24(3): 488-493. doi: 10.3969/j.issn.0258-2724.2011.03.022

[Abstract](1654)

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Abstract:
In order to improve the local search capacity of genetic algorithms (GAs) in solving the aircraft arrival sequencing and scheduling problem in a multi-runway system, a mixed-integer zero-one quadratic programming model for the problem was built. Then, the proposition was proved that aircrafts of the...

Optimal Pricing of High Speed Passenger Railway Based on Price Sensitivity of Passengers

MA Si, CHEN Lingjuan

2011, 24(3): 494-499. doi: 10.3969/j.issn.0258-2724.2011.03.023

[Abstract](1931)

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Abstract:
To optimize the fare of a high speed passenger railway line, passengers were divided into three groups according to their price sensitivities. The stochastic user equilibrium method was used to formulate an intermediate layer model for elastic demands to different types of transportation and a lower...

Optimization Algorithm of Military Airlift Loading Based on 0-1 Integer Linear Programming

MENGChong, SONG Huawen, CHENBaisong

2011, 24(3): 500-505. doi: 10.3969/j.issn.0258-2724.2011.03.024

[Abstract](1240)

PDF 820KB(650)

Abstract:
In order to make efficeient plans of military airlift loading, six types of equipment and materials to be loaded and six modes of material layouts in load-bearing space were designed by analyzing the characteristics of airlift materials and aircraft cargo hold. The three dimensional military airlift...

Improved Genetic Algorithm for Single Machine Scheduling Problems with Deteriorating Jobs

GUOPeng, CHENG Wenming, ZHANGZeqiang

2011, 24(3): 506-511. doi: 3969/j.issn.0258-2724.2011.03.025

[Abstract](1331)

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Abstract:
To reduce the computational load of the existing algorithms for solving the large-size single machine scheduling problem, an analysis was made of the scheduling rule of the problem with stepwise deteriorating jobs, and an improved genetic algorithm (IGA) based on local search was proposed to minimiz...

Spectra and Thermodynamic Properties of Bioactive C15H13N2S2 Molecules

LIXuemei, LIQuan, ZHANGJianping

2011, 24(3): 512-517. doi: 10.3969/j.issn.0258-2724.2011.03.026

[Abstract](1023)

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Abstract:
In order to obtain the spectra data and thermodynamic properties at different temperatures of N-benzylidene-4-[(2-cyanoimino-1, 3-thiazolidine-3-yl)methyl-thiazole-2-amine (C15H13N2S2) bioactive molecules, geometry structure optimization and frequency calculation were made using the B3LYP method of ...

Curing Kinetics of Nonmetallic Powder/Epoxy Resin Composites

WANG Xinjie, ZHANGJianqiang, GUOYuwen

2011, 24(3): 518-522. doi: 10.3969/j.issn.0258-2724.2011.03.027

[Abstract](1149)

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Abstract:
In order to determine appropriate curing conditions of the non-metallic powder (NM) and the epoxy resin system in a paper printed circuit board (PCB), differential scanning calorimetry (DSC) was used to study the curing processes of epoxy (EP system), non-metallic powder/epoxy resin composites (NM-E...

Industrial Test of Concrete Packing for Gob-Side Entry Retained in Gently-Inclined Medium-Thickness Coal Seam

DENGYuehua, TANGJianxin, ZHUXiangke, FUYong, HU Hai

2011, 24(3): 523-528. doi: 10.3969/j.issn.0258-2724.2011.03.028

[Abstract](1240)

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Abstract:
In order to carry out gob-side entry retaining for a fully-mechanized coal faces in a gently-inclined medium-thickness coal seam to improve coal recovery, an integrated supporting scheme was proposed. In this scheme pumping concrete is used as filling material, single hydraulic props as temporary su...

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2011 Vol. 24, No. 3