Determination of complete flutter termination parameters based on non fixed constrained mass

摘要

The present invention provides a method for obtaining a full flutter termination parameter based on a non fixed restraint mass body and includes the following steps.The model input parameters are obtained at the time of flutter time T0, the model input parameters include the mass ratio of the two mass masses, the position coordinates of each mass, the velocity, the acceleration and the repulsive coefficient, and the mass ratio and the repulsion coefficient are constant.The first solution model is established to obtain parameters of the flutter termination time t ∞.The second solution model is established to obtain the position parameters of two mass bodies at the time of flutter termination time t ∞.Based on the third solution model and the model input parameters, we obtain the velocity parameters of two mass bodies at the time of flutter termination time t ∞.The present invention can directly and directly terminate the numerical simulation from a certain flutter time and skip the flutter process to obtain the time of flutter termination and the position and velocity of the two collision mass bodies at this time, thereby improving the accuracy of the calculation And save a large amount of calculation time.