鸟撞飞机风挡的一体化数值模拟技术

鸟体本构模型及其参数的确定是影响鸟撞飞机风挡数值模拟结果的重要因素,也是一直困扰大家的难题。为提高模拟结果的准确性,将鸟体模型识别和数值模拟相结合,提出鸟撞飞机风挡数值模拟的一体化技术。重点阐述鸟体本构模型及其参数的优化反演方法,并结合计算实例给出该技术的分析过程。这些工作进一步完善了鸟撞有限元数值模拟的耦合解法理论,对飞机结构的抗鸟撞研究具有一定的参考价值。

Integrated Numerical Simulation Technique of An Aircraft Windshield Against Bird Strike

Identification of a birdbody constitutive model and its parameters,which is very difficult,is an important factor to affect the numerical simulation result of an aircraft windshield against bird strike.In order to improve the simulation accuracy,an integrated numerical simulation technique which can combine the model identification with the numerical simulation is proposed.It puts emphasis on formulating the optimization method to identify the birdgody constitutive model and its parameters and specifies the analysis procedure with an example.The new technique improves the coupled solving theory for the finite element numerical simulation of bird strike and provide a reference for study on aircraft structures against bird strike.