摘要
结合大型非线性有限元分析软件,实践了飞机风挡结构由初步设计、数值仿真以及实验验证的一体化设计过程,建立了适于风挡结构材料的非线性黏弹性本构计算接口程序,对合理选取单元类型、材料模型、边界条件影响以及试验设计等工作细节进行了深入研究,通过实验与仿真计算结果的对比,验证了数值仿真计算模型的精度.为飞机风挡的抗鸟撞结构设计-数值仿真-实验验证一体化技术提供了支持论证.
Modern numerical simulation plays a very significant role in structural design engineering in improving the design qualities, shortening the development period and reducing cost. Applying a commercial finite element analysis system, this paper presents an integrated design process of frontal windshield of an airplane, including CAD structural design, numerical simulation and experimental validation. The paper discusses the reasonable element selection, material constitutive model, the effect of different boundary conditions and experimental arrangements. Especially a three-dimensional non-linear viscoelastic model is derived and coded. A bird impact windshield experiment is carried out, and the comparison of the experiment with the numerical simulation is performed, showing that the simulation results in this paper enjoy a high level of credibility, as shown in Figs.3 through 12.
出处
《力学与实践》
CSCD
北大核心
2005年第1期14-18,共5页
Mechanics in Engineering
