Finite element simulation of wheel impact test

• Autorzy: Chang C. L. , Yang S. H.
• Języki publikacji: PL

Abstrakty

EN

Purpose: In order to achieve better performance and quality, the wheel design and manufacturing use a number of wheel tests (rotating bending test, radial fatigue test, and impact test) to insure that the wheel meets the safety requirements. The test is very time consuming and expensive. Computer simulation of these tests can significantly reduce the time and cost required to perform a wheel design. In this study, nonlinear dynamic finite element is used to simulate the SAE wheel impact test. Design/methodology/approach: The test fixture used for the impact test consists of a striker with specified weight. The test is intended to simulate actual vehicle impact conditions. The tire-wheel assembly is mounted at 13° angle to the vertical plane with the edge of the weight in line with outer radius of the rim. The striker is dropped from a specified height above the highest point of the tire-wheel assembly and contacts the outboard flange of the wheel. Because of the irregular geometry of the wheel, the finite element model of an aluminium wheel is constructed by tetrahedral element. A mesh convergence study is carried out to ensure the convergence of the mesh model. The striker is assumed to be rigid elements. Initially, the striker contacts the highest area of the wheel, and the initial velocity of the striker is calculated from the impact height. The simulated strains at two locations on the disc are verified by experimental measurements by strain gages. The damage parameter of a wheel during the impact test is a strain energy density from the calculated result. Findings: The prediction of a wheel failure at impact is based on the condition that fracture will occur if the maximum strain energy density of the wheel during the impact test exceeds the total plastic work of the wheel material from tensile test. The simulated results in this work show that the total plastic work can be effectively employed as a fracture criterion to predict a wheel fracture of forged aluminum wheel during impact test. Research limitations/implications: A standard impact load is used to carry out the test. For future study, a heavier striker or higher impact can be used to perform the test in order to produce the rupture at impact. Originality/value: In this study, the nonlinear dynamic finite element analysis is performed to simulate a forged aluminium wheel during SAE impact test. The structural damage parameter of the wheel is estimated by the strain energy density, and the fracture criterion is based on the total plastic work of the wheel material. Computer simulation of wheel impact test can significantly reduce the time and cost required to finalize a wheel design.

Słowa kluczowe

PL

mechanika komputerowa; roboty plastyczne; próba udarowa

EN

computational mechanics; nonlinear dynamic finite element; total plastic work; wheel impact test

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2008
• Tom: Vol. 28, nr 2
• Strony: 167--170
• Opis fizyczny: Bibliogr. 6 poz., wykr.

Twórcy

autor

Chang C. L.

autor

Yang S. H.

• Mechanical Engineering Department, National Yunlin University of Scienceand Technology, Yunlin, 640, Taiwan, R.O.C.,

Bibliografia

• [1] SAE Handbook J328, Wheels-passenger car and light truck performance requirements and test procedures, Society of Automotive Engineers, Inc., Warrendale, 2001.
• [2] SAE Handbook J175, Wheels-impact test procedures-road vehicles, Society of Automotive Engineers, Inc., Warrendale, 2001.
• [3] H. M. Karandikar, W. Fuchs, Fatigue life prediction for wheels by simulation of the rotating bending test, SAE Technical Paper 900147 (1990) 1-11.
• [4] U. Kocabicak, M. Firat, Numerical analysis of wheel cornering, Fatigue tests, Engineering Failure Analysis 8 (2001) 339-354.
• [5] M. Riesner, R. I. DeVries, Finite element analysis and structural optimization of vehicle wheels, SAE Technical Paper 830133 (1983) 1-18.
• [6] M. Riesner, M. P. Zebrowski, R. J. Gavalier, Computer simulation of wheel impact test, SAE Technical Paper 860829 (1986) 269-275. L1 L2.