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Longgang, China

Wang H.,Beihang University | Liu X.,Beihang University | Shan Y.,Beihang University | Wang J.,Shandong Xingmin Wheel Co.
Qiche Gongcheng/Automotive Engineering | Year: 2013

Firstly a 3D finite element model for vehicle steel wheel is constructed and a simulation is conducted to calculate its stress distribution under radian load, considering the effects of material nonlinearity and the interference fit between spoke and rim. Then a wheel stress analysis is performed with the technique of judging the tension or compression types of material plastic deformation by the third invariant of deviatoric stress tensor, and the fatigue life of wheel is calculated based on the value of von Mises stress in risky areas. Finally, corresponding tests are carried out to verify the results of above simulation and calculation. The results show that the finite element model built and analysis method used are correct, laying a foundation for further lightweight design of wheel structure. Source

Shan Y.,Beihang University | Shan Y.,Beijing Key Laboratory for High efficient Power Transmission and System Control of New Energy Resource Vehicle | Liu W.,Beihang University | Liu W.,Beijing Key Laboratory for High efficient Power Transmission and System Control of New Energy Resource Vehicle | And 3 more authors.
Qiche Gongcheng/Automotive Engineering | Year: 2016

The equivalent stresses in wheel rim obtained by a simulation based on the assumption proposed by J. Stearns that the distribution of contact pressure between tire bead and bead seat follows the cosine law are significantly deviated from test results. To resolve this problem, the contact pressure distribution between tire bead and bead seat is measured first and a curve of the change of distributed pressure caused by applying radial load on wheel rim is obtained. Then a novel contact pressure distribution model between tire bead and bead seat is built based on the fitting of that pressure distribution curve obtained. Finally a simulation is conducted on the new model built. The results show that with the new contact pressure distribution model built, an equivalent stress distribution in wheel rim closer to reality can be obtained. © 2016, Society of Automotive Engineers of China. All right reserved. Source

Wan X.,Beihang University | Shan Y.,Beihang University | Liu X.,Beihang University | Wang H.,Beihang University | Wang J.,Shandong Xingmin Wheel Co.
Advances in Engineering Software | Year: 2016

The traditional fatigue test of wheel comprising the radial and cornering fatigue tests cannot simulate the real stress state of wheel well. Biaxial wheel fatigue test combining these two traditional tests has become an internationally recognized method that can reproduce the real loading condition of the wheel in service. Since the test is time- and cost-consuming, developing the simulation method on biaxial wheel fatigue test is urgently necessary. In this paper, a new method is proposed to evaluate the fatigue life of commercial vehicle wheel, in which the finite element model of biaxial wheel fatigue test rig is established based on the standards of EUWA ES 3.23 and SAE J2562, and the simulation of biaxial wheel test and fatigue life estimation considering the effects of tire and wheel camber is performed by applying the whole load spectrum specified in ES 3.23 to the wheel. The radial and cornering fatigue tests are also simulated, and the results are compared with ones of the biaxial fatigue test. The research shows that the proposed method provides an efficient tool for predicting the fatigue life of the wheel in the biaxial fatigue test. © 2015 Elsevier Ltd. Source

Xi C.,Jilin University | Sun D.,Jilin University | Xuan Z.,Jilin University | Wang J.,Shandong Xingmin Wheel Co. | Song G.,Shandong Xingmin Wheel Co.
Materials and Design | Year: 2016

Weld thermal cycles, microstructures and mechanical properties of flash butt welded RS590CL steel joints have been investigated. The results indicated that the weld thermal cycles are characterized by high peak temperatures and rapid heating and cooling rates, and the joints included the weld interface zone (WZ), coarse grain zone (CZ), fine grain zone (FZ) and partially recrystallized zone (PZ). The WZ and CZ consist mainly of coarsened upper bainite while the FZ has a fine equiaxed grain structure containing ferrite and pearlite with NbC precipitates. The WZ and CZ have higher hardness compared with the FZ, PZ and base metal. The joint strength (584-611 MPa) can match the base metal strength (575-595 MPa). The impact toughness of weld interface zone in the joints depends on welding parameters. The excessive flash allowance results in reducing the joint toughness. The reasons for the reduced joint toughness are related to the coarsened upper bainite, retained oxides and joining defects in the weld interface zone. The suitable combination of flash allowance (8-9 mm), upset allowance (5.5-7.0 mm) and upset pressure (123-160 MPa) is beneficial for the improvement of joint toughness. © 2016 Published by Elsevier Ltd. Source

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