車架有限元分析外文文獻(xiàn)翻譯（英文）

1、 Jurnal Mekanikal December 2008, No. 26, 76 - 85 76 STRESS ANALYSIS OF HEAVY DUTY TRUCK CHASSIS AS A PRELIMINARY DATA FOR ITS FATIGUE LIFE PREDICTION USING FEM Roslan Abd Rahman, Mohd Nasir Tamin, Ojo Kurdi* Faculty o

2、f Mechanical Engineering, Universiti Teknologi Malaysia, 81310 UTM, Skudai, Johor Bahru ABSTRACT This paper presents the stress analysis of heavy duty truck chassis. The stress analysis is important in fatigue stud

3、y and life prediction of components to determine the critical point which has the highest stress. The analysis was done for a truck model by utilizing a commercial finite element packaged ABAQUS. The model has a leng

4、th of 12.35 m and width of 2.45 m. The material of chassis is ASTM Low Alloy Steel A 710 C (Class 3) with 552 MPa of yield strength and 620 MPa of tensile strength. The result shows that the critical point of stress oc

5、curred at the opening of chassis which is in contact with the bolt. The stress magnitude of critical point is 386.9 MPa. This critical point is an initial to probable failure since fatigue failure started from the hi

6、ghest stress point. Keyword: Stress analysis, fatigue life prediction, truck chassis 1.0 INTRODUCTION The age of many truck chassis in Malaysia are of more than 20 years and there is always a question arising whethe

7、r the chassis is still safe to use. Thus, fatigue study and life prediction on the chassis is necessary in order to verify the safety of this chassis during its operation. Stress analysis using Finite Element Method

8、(FEM) can be used to locate the critical point which has the highest stress. This critical point is one of the factors that may cause the fatigue failure. The magnitude of the stress can be used to predict the life sp

9、an of the truck chassis. The accuracy of prediction life of truck chassis is depending on the result of its stress analysis. The more accurate result of stress analysis the more valid the predicted life of object. In

10、 this study, the stress analysis is accomplished by the commercial finite element packaged ABAQUS. The automotive industry (vehicles and components) represents a strategic and important business sector in Malaysia. Wi

11、th the eventual trade liberalization of ASEAN Free Trade Area (AFTA), local automotive manufacturers and vendors shall require cars and components of world class standard. Noise and vibration are * Corresponding author

12、: E-mail: ojokurdi@yahoo.com Jurnal Mekanikal, December 2008 78 regime, which implies that no fatigue failure of trusses and floor system would be expected anytime during its service life. Ye and Moan [10] have invest

13、igated the static and fatigue behavior of aluminium box-stiffener/web frame connections using Finite Element Analysis (FEA) to provide a connection solution that can reduce the fabrication costs by changing the cuttin

14、g shapes on the web frame and correspondingly the weld process meanwhile sufficient fatigue strength can be achieved. FE based fatigue was used to locate the critical point of probable crack initiation and to predict

15、 the life in a door hinge system [11]. In this study, stress analysis of heavy duty truck chassis loaded by static force will be investigated to determine the location of critical point of crack initiation as a pre

16、liminary data for fatigue life prediction of this truck chassis. 2.0 FINITE ELEMENT ANALYSIS OF TRUCK CHASSIS 2.1 Basic Concept of FEM The finite element method (FEM) is a computational technique used to obtain appro

17、ximate solutions of boundary value problems in engineering. Simply stated, a boundary value problem is a mathematical problem in which one or more dependent variables must satisfy a differential equation everywhere wi

18、thin a known domain of independent variables and satisfy specific conditions on the boundary of the domain [12]. An unsophisticated description of the FE method is that it involves cutting a structure into several el

19、ements (pieces of structure), describing the behavior of each element in a simple way, then reconnecting elements at nodes as if nodes were pins or drops of glue that hold elements together (Figure 1). This process r

20、esults in a set of simultaneous algebraic equations. In stress analysis these equation are equilibrium equations of the nodes. There may be several hundred or several thousand such equations, which mean that computer