Virtual Testing of Laminated Composites Subjected to Low-Velocity Impact
Küçük Resim Yok
Tarih
2023
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Composite materials have many superior properties compared to traditional materials. However, due to its high cost, the composite structure must be designed correctly at the beginning. Composite structures are particularly sensitive to impact loads. Predicting the damages that will occur in the composite structure due to impact and designing accordingly will contribute significantly to the reduction of the negative situation caused by the high cost. In this study, the dynamic response of E-glass fiber-reinforced polymer (GFRP) laminated composites subjected to low-velocity impact was studied experimentally and numerically. Thus, it is aimed to determine the damage behavior with virtual tests before the composite structures are produced. Low-velocity impact tests were performed on composite samples that have different dimensions at impact velocities of 2.0, 2.5, and 3.0 m/s. Low-velocity impact tests were carried out by a vertical drop weight testing machine. A cylindrical impactor with a semispherical nose having a mass of 30 kg and a radius of 12 mm was utilized in the low-velocity impact tests. The impact was applied to the center of the composite laminates, the short sides of which are fixed. Numerical analyses were performed using the LS-DYNA finite element method package program with Tsai-Wu matrix failure criterion damage mechanics-based material model MAT 055. In addition, mesh optimization for the failure modeling parameters of the material model Mat_Enhanced_Composite_Damage (MAT 055) was realized. An agreement of up to 90% was observed between the numerical analysis and the experimental results. According to the results obtained from the experimental and numerical studies, it was seen that the size of composite plates significantly affects the impact behavior of the materials. In addition, it was observed that the ratio of the absorbed energy to the total energy increased and the damage to the samples increased with the increase of the impact energy.
Açıklama
Anahtar Kelimeler
Composites, Damage Zone, Fibers, Low-Velocity Impact, Ls-Dyna
Kaynak
Iranian Journal Of Science And Technology-Transactions Of Mechanical Engineering
WoS Q Değeri
Q4
Scopus Q Değeri
Q2
Cilt
47
Sayı
2
