Experimental and numerical simulation of bird-strike performance of lattice-material-infilled curved plate

• 作者: Jun YAN Chenguang ZHANG Sixu HUO Xianghai CHAI Zhihui LIU Kun YAN
• 来源期刊: 中国航空学报（英文版）
• 年，卷（期）: 2021,（8）
• 所属期刊栏目: Special Topic-Modeling and Simulation in Design and Manufacture of Composite Structures
• 页码范围: 245-257
• 页数: 13页
• 语种: 英文

摘要

The anti-bird-strike performance of a lattice-material-infilled curved plate is investigated herein.Since automatically filling the curved structure by classical lattice material filling methods will cause a large number of manufacturing defects,a space-dependent lattice material filling method for the curved plate is firstly proposed in this paper Next,using a face-centered cubic lattice,a lattice-material-infilled test piece with a hollow ratio of 40.8％ is built.The test pieces are man-ufactured via additive manufacturing using titanium alloy.In bird-strike experimental tests,the test pieces are crashed against gelatin birds at an impact velocity of 200 m/s.Dynamic strain gauges are used to record the crash history and the results are discussed.Furthermore,a numerical analysis to simulate the bird-strike experiment is performed.The results from the experimental tests and numerical simulation agree well.This work shows that the lattice-material-infilled curved plate yields promising bird-strike resistance.Therefore,lattice-infilled materials are feasible for protecting aerospace components against bird-strike as well as for reducing the component weight.