民用飞机有限元模型的适航符合性验证

Airworthiness Compliance Certification of Finite Element Model(FEM)for Civil Aircraft

在民机结构强度设计及优化中,有限元模型作为一种数值计算方法已被广泛应用,并被业内所认可,但至今仍缺乏一套有效的有限元模型适航验证方法。从适航规章角度出发,探讨有限元模型的验证思路和要求,梳理验证要素,并给出验证评价体系,可用于指导后续民机设计有限元模型适航符合性验证。

As one of the numerical calculation methods,the Finite Element Model(FEM)has been used a lot in the civil aircraft strength design and structure optimization,and also been recognized as the most useful numerical calculation methods in the aviation domain.But up to now,there is no one effective way to validate FEM for airworthiness certification.The FEM airworthiness certification requirements and thoughts are explored from the airworthiness regulation to make sure the certification points and establish the certification evaluation system.The method of verifying the FEM for certification can be used for the future civil aircraft design.