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| Experiment and Numerical Simulation on Performance of TC4 Fastener |
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Abstract The research validates the feasibility of using TC4 bolt with MJ thread to substitute 30CrMnSiA bolt with M thread in the aircraft manufacturing．The experiment proves that the tension intensity of 30CrMnSiA bolt is higher than that of TC4 bolt．But compared to the 30CrMnSiA bolt with M th tread．the TC4 bolt．with MJ
thread obtains the far higher fatigue properties．Combind with the ANSYS FEA tO calculate the concentration coefficient of TC4 bolt witll MJ thread is lower is the main factor which improves the fatigue properties．
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2009, 
