摘要
大型飞机机翼上壁板、翼梁腹板等可达上百平方米,开展其结构承载稳定性设计与精细分析工作,对于结构的承载安全性、寿命以及重量优化等具有重要工程意义。文中提出一套基于准三维参数化有限元分析建模、正交试验设计与非线性数值计算相结合的设计分析方法,可有效解决精细设计论证工作中的难点,并获得结构参数对结构承载稳定性的敏感性以及初步的优化设计方案。算例表明文中建模方法与非线性数值分析的必要性。
Since the upper wing panel of large scale airplane amounts to over hundred squared meters, it is significant in practical engineering to study the load carrying stability design and refined analysis for its safety, life and weight optimization. The study presents an integrated method to combine orthogonal experiment design and nonlinear numerical analysis based on quasi-3D parameterized finite element （FE） modeling technique, which can solve effectively the preliminary sizing design difficulties and obtain the approximately optimal structure and sensitivities of component parameters to structural loading stability. The numerical examples show the reasonableness and feasibility of the modeling method and nonlinear numerical analysis.
出处
《机械强度》
CAS
CSCD
北大核心
2009年第6期962-966,共5页
Journal of Mechanical Strength
基金
航空科学基金资助(20060953013)~~
关键词
壁板结构
承载稳定性
准三维有限元模型
正交试验设计
非线性数值分析
Wing stiffened panel
Loading carrying stability
Quasi-3D finite element modeling
Orthogonai experiment design
Nonlinear numerical analysis
