Fatigue Life Analysis of Hatch Torsion Bar Mechanism Based on Rigid-Flexible Coupling
In view of the problem of low hatch model accuracy,long development cycle of torsion bar mechanism and single result of the theoretical analysis,the rigid-flexible coupling dynamics model of the hatch was established,the method of fatigue life prediction combined with finite element analysis and multi-body dynamics theory was proposed.According to the fatigue characteristics of the tor-sion bar material,the fatigue life of the torsion bar was evaluated by using the nCode software,by which the fatigue test cycle of the hatch mechanism could be effectively shortened,and the problems of the long fatigue test cycle and high cost of the hatch mechanism were solved.At the same time,a physical platform for the hatch was built,and data support was provided for the proposed method through experiments.The results show that the dangerous parts of the torsion bar mechanism are at the weak points on both sides,the hatch structure meets the design requirements,and the method can be used to effectively shorten the development and design cycle of the hatch structure and the hatch structure is optimized.
rigid-flexible couplingtorsion bar mechanismdynamic simulationfatigue life analysis
NETL
NSTL
万方数据
