Structural strength analysis of the bogie frame in Taipei rapid transit systems

1998 ◽  
Vol 212 (3) ◽  
pp. 253-262 ◽  
Author(s):  
C Oyan
Keyword(s):  
Fatigue Strength ◽  
Complex Geometry ◽  
Static Strength ◽  
Rolling Stock ◽  
Strength Analysis ◽  
Rapid Transit ◽  
Bogie Frame ◽  
Transit Systems ◽  
Permissible Stress ◽  
Dynamic Loadings

The importance of bogie fatigue in railway rolling stock has been recognized as a contributing factor in structural failure. A bogie frame designed for Taipei rapid transit systems is analysed in order to confirm the technical strength requirements for static and dynamic loadings. A numerical finite element analysis is utilized in view of the complex geometry, and detailed plots are also presented in this report to give a complete understanding of the behaviour of the bogie frame. The von Mises stresses are adopted as equivalent stresses in the static strength calculation while the principal stresses are adopted in fatigue strength evaluation. Material yield stress and modified Goodman diagrams showing the permissible stress ranges are used as failure criteria respectively for static and dynamic loadings. It is demonstrated that the static strength and fatigue strength of the bogie frame satisfy the strength requirements specified by Taipei rapid transit systems.

The Static Strength and Fatigue Strength Analysis of a Certain Type of Cooling Fan

2014 ◽  
Vol 1008-1009 ◽  
pp. 972-978
Author(s):  
Xiao Jun Li ◽  
Long Yin ◽  
Lei Ni ◽  
Ming Hai Li
Keyword(s):  
United States ◽  
Fatigue Strength ◽  
The United States ◽  
Static Strength ◽  
Strength Analysis ◽  
Ansys Software ◽  
Permissible Stress ◽  
Rotating Speed ◽  
Cooling Fan ◽  
A Company

This paper estimates the static strength of a certain type of cooling fan designed by a company in the rotating speed of 1260 rpm and 1380 rpm, evaluates static strength according to the cooling fan’s permissible stress in F state and T1 state, estimates the fatigue strength according to the operation load of cooling fan suffering from different direction when locomotive running and evaluates the cooling fan fatigue life according to the IIW standard. Static strength and fatigue strength calculation using ANSYS companies in the United States commercial version of the ANSYS software to complete.

scholarly journals Fatigue strength analysis of bogie frames under random loads

2019 ◽  
Vol 11 (9) ◽  
pp. 168781401987801 ◽  
Author(s):  
Qi An ◽  
Hua Zhao ◽  
Peihai Li ◽  
Maohai Fu
Keyword(s):  
Fatigue Strength ◽  
Coordinate System ◽  
Welded Joints ◽  
Strength Analysis ◽  
Node Degree ◽  
International Institute ◽  
Bogie Frame ◽  
Welding Method ◽  
Stress Components ◽  
Time Histories

In this study, a method for analyzing the fatigue strength of a bogie frame under a random load was proposed. Based on the geometric features, a welded joint coordinate system was established to compute the stress components of each node in this coordinate system. With the influence of small amplitude cycles included, based on the corrected S–N curve and a method for calculating the equivalent constant amplitude stress, the node and comprehensive degree of utilization were calculated based on the anti-fatigue design grade of welded joints to evaluate the fatigue strength of a structure under a given lifespan. The FKM and International Institute of Welding methods were used to evaluate the fatigue strength of typical welded joints of a bogie frame. The characteristics of the node degree of utilization under different analytical methods were compared, and the results showed that when the time histories of the three stress components of the nodes had significant non-proportional features, the FKM method obtained conservative results. When the time histories of the three stress components of the nodes were synchronized, the criterion value specified by the International Institute of Welding method was the main factor affecting the distribution characteristics of the node degree of utilization. The analysis based on the International Institute of Welding method can effectively balance the lightweight design and reliability of the structure.

Structural Simulation and Strength Analysis for Trailer Bogie Frame of High-Speed Train Based on CATIA and ANSYS Workbench

2020 ◽  
Vol 13 (3) ◽  
pp. 266-279
Author(s):  
Junguo Wang ◽  
Minqiang Ren ◽  
Rui Sun ◽  
Yang Yang ◽  
Yongxiang Zhao
Keyword(s):  
Dynamic Characteristics ◽  
High Speed ◽  
Structural Strength ◽  
Dynamic Performance ◽  
Static Strength ◽  
Railway Vehicle ◽  
Strength Analysis ◽  
Design Standards ◽  
Bogie Frame ◽  
Ansys Workbench

Background: As a key component of the rail transit vehicle, the railway bogie greatly affects the dynamic performance, reliability, and safety of the high-speed rail vehicle. In this paper, the structural strength of a typical trailer bogie frame is evaluated and its strength and dynamic requirements are verified. In addition, various patents on bogie structural strength have also been discussed in this paper. Objective: The study aimed to evaluate and verify the rationality of the bogie frame structure design with static strength and dynamic characteristics. Methods: A three-dimensional model of the trailer bogie frame was built by CATIA V5, and then, a finite element model of the frame was analyzed by ANSYS Workbench. Bogie frame loads, static strengths and dynamic characteristics of the frame under different conditions (straight, curve, braking and abnormal) were calculated based on its strength and design standards. Results: According to the requirement stress and dynamics standard, the maximum stress of the bogie frame was observed to be in the allowable stress value of the frame material, and the dynamic performance of the bogie model meets the design standards. Conclusion: The structural strength of the proposed bogie frame is reasonable, and the static strength and dynamic characteristics of the proposed bogie model are in accordance with the design requirements of the railway vehicle.

Effect of Track Measuring Beam on the Bogie Frame Strength and Vibration Mode of Inspection Car

2013 ◽  
Vol 690-693 ◽  
pp. 1923-1927
Author(s):  
Long Fa Wu ◽  
Sheng Qu
Keyword(s):  
Finite Element ◽  
Fatigue Strength ◽  
Vibration Mode ◽  
Element Model ◽  
Static Strength ◽  
Bogie Frame ◽  
Local Modes ◽  
Harmonic Response ◽  
Free Mode ◽  
Important Structure

Track measuring beam is the most important structure in the inspection car and the vibration characteristics of it affect the inspection results and the fatigue strength of the bogie frame. In this study, the bogie frame finite element model of a inspection car were constructed and the free mode, static strength, fatigue strength and harmonic response were analyzed. The influence of the track measuring beam installation on the local modes, static strength and fatigue strength of the bogie frame were investigated and the suggestion on the method to reduce the track measuring beam vibration and improve the inspection quality was proposed.

Fatigue Strength Analytical Study of Truck-Mounted Concrete Pump

2011 ◽  
Vol 295-297 ◽  
pp. 2620-2623
Author(s):  
Xin Xiang Zhou ◽  
Nan Nan Ren ◽  
Shu Jun Guo ◽  
Yan Ling Tang ◽  
Yu Cui ◽  
...  
Keyword(s):  
Fatigue Strength ◽  
Maximum Stress ◽  
Research Work ◽  
Static Strength ◽  
Strength Analysis ◽  
Optimization Analysis ◽  
Safety Coefficient ◽  
The Third ◽  
The Stability ◽  
Concrete Pump

This paper is based on the design of the boom system of concrete pump car.fatigue strength of the boom system is analysed detailedly after completing a series of work, such as the boom system simulation, static strength , the stability analysis and structural optimization. Analysis shows that the easiest damaged location of the boom system is in the joint of the third boom, that is the place of the maximum stress in static analysis of the boom system.The safety coefficient is 1.393 after finishing fatigue analysis,and the numerical value is still bigger than specified safety coefficient, namely 1.3;the minimum life total amount (cycle) is 323500, which occurs in the third quarter boom, that is the place of the maximum stress in static strength analysis of the boom system; the fatigue strength of the boom system satisfy the requirement.These research work provide reliable reference for the design and improvement of the boom structure.

Fatigue Strength Analysis of the Actuator for the Steering Gear Based on DFR

2012 ◽  
Vol 226-228 ◽  
pp. 850-854
Author(s):  
Gang Duan ◽  
Hong Jie Yuan
Keyword(s):  
Finite Element Analysis ◽  
Fatigue Strength ◽  
Static Strength ◽  
Strength Analysis ◽  
Analysis Software ◽  
Element Analysis ◽  
Theoretical Derivation ◽  
Verification Method ◽  
Stiffness Model ◽  
Damage Theory

In order to assess whether the durability of the designed product meets the requirements or not, the fatigue strength should be analyzed in product designing stage. With the help of ANSYS finite element analysis software, the detail fatigue rating (DFR) method and the linear cumulative damage theory are used to analyze the actuator from three aspects of the static strength, stiffness and fatigue strength. A Stiffness Model of the Actuator has been built in the static strength analysis. The paper also highlighted the theoretical derivation of the DFR and the application in the fatigue strength calculation of the actuator. In practical projects, this method can be applied to similar products, and it can be used as a verification method for design optimization.

Comparison of the Strength Analysis about Single Bogie Frame and its in the Assembly

2014 ◽  
Vol 705 ◽  
pp. 87-91
Author(s):  
Quan Xian Wang ◽  
Qi Hui Dai ◽  
Jing Jie Sun ◽  
Wei Hong Wu
Keyword(s):  
Maximum Stress ◽  
Mechanical Performance ◽  
Load Condition ◽  
Frame Structure ◽  
Strength Analysis ◽  
Element Analysis ◽  
Bogie Frame ◽  
Permissible Stress ◽  
Strength Tests ◽  
Structure Strength

To take The CRH3 EMU bogie frame as the research object, aiming at the characteristic and mechanical performance of bogie frame, the 3D model of CRH3 bogie frame based on PRO/E are established. According to the standard TB/T 2368-2005 Motive power bogie frame structure strength tests, the load condition is defined. The strength analysis by finite element analysis software ANSYS are carried out in the bogie and single frame . The analysis results show that the maximum stress value of the selected node is less than the permissible stress in both cases, the strength analysis result of the bogie frame is more credible because the load processing is more close to the actual stress.

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