无机脆性玻璃光窗抗鸟撞分析

Bird Impact-Resistant Analysis on Inorganic Brittle Glass Window

通过选取鸟体模型、载荷接触面形式及解耦载荷数学模型,结合刚性靶理论,分别采用解耦解法、耦合解法对某无机脆性玻璃光窗进行了抗鸟撞分析,并对两种算法下的计算结果进行了比较。研究结果表明,无机脆性材料可以采用最大主应力破坏准则作为玻璃的失效准则;对于无机脆性玻璃,可用解耦解法进行分析,计算得到的临界速度与耦合解法得到的十分接近;采用解耦算法进行无机脆性玻璃材料鸟撞分析时,载荷接触面形状采用圆形面优于椭圆面。

By selecting the bird model, the form load contact surface and decoupled load mathematical model and based on the theory of rigid target, this paper carries out the bird impact-resistant analysis on a certain type of inorganic brittle glass window by the means of decoupling and coupling algorithm respectively, and carries out the comparison on the computing results of the two algorithms. The study result shows that （I） for inorganic brittle material, the max. stress rupture rule can be used as the failure criterion of glass; （2） decoupling algorithm can be used for analyzing inorganic brittle glass, and the decouplcd critical speed is close to the coupled one; （3） when the decoupling algorithm is applied for the analysis of bird impact on inorganic brittle glass, the round load contact surface is better than the elliptical one.