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

• Published in: Chinese journal of aeronautics Vol. 34; no. 8; pp. 245 - 257
• Main Authors: YAN, Jun, ZHANG, Chenguang, HUO, Sixu, CHAI, Xianghai, LIU, Zhihui, YAN, Kun
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.08.2021; Ningbo Institute of Dalian University of Technology,Ningbo 315016,China%State Key Laboratory of Structural Analysis for Industrial Equipment,Department of Engineering Mechanics,Dalian University of Technology,Dalian 116024,China%Department of Discipline Engineering,AVIC Commercial Aircraft Engine Co.,LTD,Shanghai 200241,China; Shanghai Engineering Research Center of Civil Aero Engine,Shanghai 200241,China%School of Chemical Engineering,Dalian University of Technology,Dalian,Liaoning 116024,China; State Key Laboratory of Structural Analysis for Industrial Equipment,Department of Engineering Mechanics,Dalian University of Technology,Dalian 116024,China
• Subjects: Bird-strike test; Face-centered cubic lattice; Infilled curved plate; Lattice material; Numerical simulation; Bird-strike test; Lattice material; Numerical simulation; Infilled curved plate; Face-centered cubic lattice
• ISSN: 1000-9361
• DOI: 10.1016/j.cja.2020.09.026

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 manufactured 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.