Shandong Xingmin Wheel Co.

Longgang, China

Shandong Xingmin Wheel Co.

Longgang, China
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Shang D.,Beihang University | Liu X.,Beihang University | Shan Y.,Beihang University | Jiang E.,Shandong Xingmin Wheel Company
International Journal of Fatigue | Year: 2016

The steel wheel is an important safety component of a passenger car, which mainly consists of wheel disc and rim. The steel wheel disc is generally formed by the stamping process, and in this process the great residual stress is generated in the surface which may significantly affects the fatigue life of the wheel. In this paper, a method is proposed to introduce the stamping residual stress of steel wheel disc so as to predict the fatigue life of the wheel accurately. Firstly, the residual stress is obtained from the simulation of stamping process, and the experimental verification is conducted. Then the operating stress is simulated based on the cornering fatigue test. Finally, these two stresses are superposed to predict the fatigue life of the steel wheel. The results show that the predicted fatigue life using this method is closer to the experimental one than the fatigue life without considering the residual stress. The proposed method may provide an accurate and effective tool for predicting the fatigue life of the steel wheel in the cornering fatigue test. © 2016

Lu H.,Cine Metal Co. | Lu H.,East China University of Science and Technology | Zhang I.,Benxi Iron and Steel Group Co. | Wang J.,Shandong Xingmin Wheel Co. | And 5 more authors.
7th International Conference on High Strength Low Alloy Steels, HSLA Steels 2015, International Conference on Microalloying 2015, Microalloying 2015 and International Conference on Offshore Engineering Steels 2015, OES 2015 | Year: 2015

Lightweight wheels can reduce weight about 100kg for commercial vehicles, and it can save energy and reduce emission, what's more, it can enhance the profits for logistics companies. The development of lightweight commercial vehicle wheels is achieved by the development of new steel for rim, the process optimization of flash butt welding, and structure optimization by finite element methods. Niobium micro-alloying technology can improve hole expansion rate, weldability and fatigue performance of wheel steel, and based on Niobium micro-alloying technology, a special wheel steel has been studied whose microstructure are Ferrite and Bainite, with high formability and high fatigue performance, and stable mechanical properties. The content of Nb in this new steel is 0.025% and the hole expansion rate is ≥ 100%. At the same time, welding parameters including electric upsetting time, upset allowance, upsetting pressure and flash allowance are optimized, and by CAE analysis, an optimized structure has been attained. As a results, the weight of 22.5in×8.25in wheel is up to 31.5kg, which is most lightweight comparing the same size wheels. And its functions including bending fatigue performance and radial fatigue performance meet the application requirements of truck makers and logistics companies.

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.

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.

Wan X.,Beihang University | Shan Y.,Beihang University | Liu X.,Beihang University | Wang H.,Beihang University | Wang J.,Shandong Xingmin Wheel Company
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.

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.

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