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2015 Fiscal Year Final Research Report

Modeling of bird-strike damage in aircraft composite components

Research Project

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Project/Area Number 25289306
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypePartial Multi-year Fund
Section一般
Research Field Aerospace engineering
Research InstitutionShizuoka University

Principal Investigator

Yashiro Shigeki  静岡大学, 工学部, 准教授 (00452681)

Project Period (FY) 2013-04-01 – 2016-03-31
Keywords複合材料・物性 / 航空宇宙工学 / 高速衝撃 / 解析・評価 / 粒子法 / SPH
Outline of Final Research Achievements

This study aimed to establish an integrity evaluation technology for aircraft composite structures against bird strike events and developed a numerical method to predicting bird-strike damage of CFRP laminates. More specifically, we developed an improved smoothed particle hydrodynamics (SPH) that achieved inhomogeneous initial particles arrangement and resulting reduction of calculation cost. Moreover, a material softening model was introduced into the constitutive equation of a particle to represent energy absorption due to crack extension. This approach enabled us to analyze extension of delamination in composite laminates. We finally predicted bird-strike damage of CFRP cross-ply laminates, and demonstrated that the present method could represent the damage extension observed in the experiments.

Free Research Field

複合材料工学

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Published: 2017-05-10  

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