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A critical review of wheel/rail high frequency vibration-induced vibration fatigue of railway bogie in China

Railway Sciences 2024年第2期3卷 177-215页

作者： Xingwen Wu Zhenxian Zhang Wubin Cai Ningrui Yang Xuesong Jin Ping Wang Zefeng Wen Maoru Chi Shuling Liang Yunhua Huang School of Mechanical Engineering Southwest Jiaotong UniversityChengduChina State Key Laboratory of Rail Transit Vehicle System Southwest Jiaotong UniversityChengduChina Key Laboratory of High-speed Railway Engineering Ministry of Education Southwest Jiaotong UniversityChengduChina

Purpose–This review aims to give a critical view of the wheel/rail high frequency vibration-induced vibration fatigue in railway ***/methodology/approach–vibration fatigue of railway bogie arising from the wheel/rail high frequency vibration has become the main concern of railway *** reviews usually focused on the formation mechanism of wheel/rail high frequency *** paper thus gives a critical review of the vibration fatigue of railway bogie owing to the short-pitch irregularities-induced high frequency vibration,including a brief introduction of short-pitch irregularities,associated high frequency vibration in railway bogie,typical vibration fatigue failure cases of railway bogie and methodologies used for the assessment of vibration fatigue and research ***–The results showed that the resulting excitation frequencies of short-pitch irregularity vary substantially due to different track types and formation *** axle box-mounted components are much more vulnerable to vibration fatigue compared with other *** wheel polygonal wear and rail corrugation-induced high frequency vibration is the main driving force of fatigue failure,and the fatigue crack usually initiates from the defect of the weld *** spectrum for attachments of railway bogie defined in the standard underestimates the vibration level arising from the short-pitch *** current investigations on vibration fatigue mainly focus on the methods to improve the accuracy of fatigue damage assessment,and a systematical design method for vibration fatigue remains a huge gap to improve the survival probability when the rail vehicle is subjected to vibration ***/value–The research can facilitate the development of a new methodology to improve the fatigue life of railway vehicles when subjected to wheel/rail high frequency vibration.

关键词： Wheel/rail high frequency vibration vibration fatigue Railway bogie fatigue damage assessment

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Study on the Vehicle Front-end Module vibration fatigue Based on Road Load and vibration Spectrum Equivalent

Study on the Vehicle Front-end Module Vibration Fatigue Base...

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2018中国汽车工程学会年会

作者： QI Chao MAO Xianhong WANG Hua DENG Binjiao Automobile Engineering Institute Chongqing Chang’an Automobile Co.Ltd.

The test vehicle was instrumented to measure acceleration in X,Y,Z directions on the front-end ***,the stability of the acceleration signal was *** duty cycle was converted from time domain to vibration spectrum,and the validation of the vibration spectrum was examined by a finite element ***,the vibration fatigue was analyzed and the optimization for the failure of the front-end module was *** the optimized structure was proved by proving *** research results could applies to the front-end module design of new platform vehicles,which could effectively avoid the problem of structural cracking.

关键词： front-end module frequency response vibration spectrum vibration fatigue

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fatigue behavior of aluminum stiffened plate subjected to random vibration loading

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Transactions of Nonferrous Metals Society of China 2014年第5期24卷 1331-1336页

作者：胡海涛李玉龙索涛赵峰苗应刚薛璞邓琼西北工业大学航空学院西安710072 顶峰多尺度科学研究所成都610064

vibration tests were carried out on three types of stiffened aluminum plates with fully clamped boundaries under random base excitation. During the test, the response of the specimens was monitored using strain gauges. Based on the strain history, the accumulation of fatigue damage of the stiffened plates was estimated by means of the rainflow cycle counting technique and the Miner linear damage accumulation model in the time domain. Utilizing the change of natural frequencies, a nonlinear model was fitted for predicting the fatigue damage of plate and then the foregone failure criterion of 5% reduction in natural frequency is improved. The influence of section and spacing of the stiffeners on the vibration fatigue behavior of the aluminum plate was investigated. The results show that the fatigue life of aluminum plate increases with adding either T or L section riveted stiffeners. With the same cross-sectional area of stiffener, the T section stiffened plate shows longer fatigue life than L section stiffened plate. Meanwhile, the vibration fatigue life also shows great sensitivity to the spacing between the stiffeners.

关键词： stiffened plate vibration fatigue vibration test fatigue life natural frequency

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Influence of surface treatments on fatigue life of a two-stroke free piston linear engine component using random loading

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2006年第11期7卷 1819-1830页

作者： RAHMAN M.M. ARIFFIN A.K. JAMALUDIN N. HARON C.H.C. Department of Mechanical and Materials Engineering Faculty of Engineering Universiti Kebangsaan Malaysia 43600 UKM Bangi Selangor DE Malaysia

This paper describes the finite element (FE) analysis technique to predict fatigue life using the narrow band frequency response approach. The life prediction results are useful for improving the component design methodology at the very early development stage. The approach is found to be suitable for a periodic loading but requires very large time records to accurately describe random loading processes. This paper is aimed at investigating the effects of surface treatments on the fatigue life of the free piston linear engine’s components. Finite element modelling and frequency response analysis were conducted using computer aided design and finite element analysis commercial codes, respectively. In addition, the fatigue life prediction was carried out using finite element based fatigue analysis commercial code. Narrow band approach was specially applied to predict the fatigue life of the free piston linear engine cylinder block. Significant variation was observed between the surface treatments and untreated cylinder block of free piston engine. The obtained results indicated that nitrided treatment yielded the longest life. This approach can determine premature products failure phenomena, and therefore can reduce time to market, improve product reliability and customer confidence.

关键词： vibration fatigue Finite element (FE) Power spectral density function Frequency response Surface treatment

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vibration monitoring for composite structures using buckypaper sensors arrayed by flexible printed circuit

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International Journal of Smart and Nano Materials 2021年第2期12卷 198-217页

作者： Xiao Wei Jiang Zhi Wang Shao Wei Lu Lu Zhang Xiao Qiang Wang Hao Zhang Jian Lu Bo Li School of Aero-engine Shenyang Aerospace UniversityShenyangLiaoningChina School of Materials and Science Engineering Shenyang Aerospace UniversityShenyangLiaoningChina School of Aerospace Engineering Shenyang Aerospace UniversityShenyangLiaoningChina

Fiber-reinforced resin-based plastics are widely used in structural composites for aerospace and automotive applications,and they often face extreme load conditions in actual working *** is challenging to monitor the damage of the structure during the vibration *** study was aimed at using buckypaper(BP)sensors to monitor the structural health status of composite structures under ambient ***,the feasibility of flexible printed circuit instead of wire is verified by the tensile *** the vibration monitoring experiment of the composite cantilever beam is carried out by using BP sensors *** sweep frequency experiment determines the excitation frequency of the cantilever ***-period vibration fatigue cycle and high-period vibration fatigue cycle experiments are designed to verify the vibration monitoring method using BP ***,the signal response of BP sensors in the vibration experiment is analyzed,and the relationship betweenΔR/R0 and vibration acceleration is ***,through the change law ofΔR/R0 of the sensor,the cumulative damage caused by vibration fatigue is *** is demonstrated that the monitoring method based on BP sensors can be applied to study the damage behavior of composite structure under the vibration environment.

关键词： CNT buckypaper sensor composite structure health monitoring vibration fatigue electrical resistance

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Mechanical Analysis Methods of Cantilever Gearbox Housing

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Journal of Shanghai Jiaotong university(Science) 2023年第2期28卷 233-242页

作者：王珏李朋宋诗瑶 Department of Information Engineering Liaoning Economic Vocational Technological InstituteShenyang 110122China

The mechanical state of cantilever gearbox housing is different from ordinary ones due to the long arm of force caused by cantilever *** mechanical analysis methods either took cantilever gearbox housing as ordinary ones or cantilever *** published papers have specially focused on mechanical analysis method for cantilever gearbox *** paper takes a longwall shearer cutting unit gearbox(SCUG)as an example and the mechanical analysis method is investigated according to the causes of fatigue for *** analysis model is established for finding out regions of static fatigue caused by low-frequency loads,and local resonance analysis is used for finding out regions of vibration fatigue caused by high-frequency *** only bending moment but also torque caused by gear meshing forces is taken into account in the force analysis *** response is obtained from cutting experiment,and dominant frequencies of local resonance are obtained by frequency domain *** element model of SCUG is established,and natural frequencies and strain modes are analyzed for obtaining the main vibration modes corresponding to dominant ***,large stress regions caused by low and high frequency loads are *** show that the worst working condition is oblique cutting,and the stress of B-B in 600 mm cutting depth can reach 166 ***,950 Hz,1250 Hz,and 1400 Hz are dominant frequencies of SCUG(23rd,25th and 27th natural frequencies).Generally,this paper proposes some principles for mechanical analysis method of cantilever gearbox housing.

关键词： cantilever gearbox housing mechanical analysis method static fatigue vibration fatigue dynamic characteristics cutting experiment

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