基于归一化插值的气动力加载仿真

Aerodynamic force loading simulation based on normalization interpolation

对传统的气动网点载荷向有限元节点载荷的转换方法进行了改进,提出了归一化插值处理气动点加载的方法,将气动网点和有限元节点沿弦向分别进行单位化后再进一步插值,可以处理不同翼形,甚至同时处理机翼和机身的气动载荷,提高了计算的效率和精度。文中通过算例进一步证实了该方法的方便有效。

The conversion method from the aerodynamic grid force to FEM node force has been improved.The aerodynamic force loading simulation based on normalization interpolation is proposed.First the coordinate of the aerodynamic grid and the FEM node should be normalized along the chord.Then the interpolation is carried to get the aerodynamic force on the node.Using this method the aerodynamic force on the various of wing form could be transformed with a high efficiency and precision.Even the aerodynamic force on the combination of the fuselage and wing could be transformed simultaneously.One example is offered to validate this method.