Investigation of mechanical behavior of reinforced u-profile composites under low velocity impact

Yıl 2024, Cilt: 8 Sayı: 4, 218 - 225

Merve Uslu , Mete Onur Kaman , Mustafa Albayrak , Cenk Yanen , Serkan Dağ , Serkan Erdem , Kadir Turan

https://doi.org/10.26701/ems.1490393

Öz

In this study, the impact resistance of reinforced composite panels with unsupported, and U profile supported by I profile was numerically examined. For this purpose, firstly, unsupported glass fiber/epoxy composite panels were designed, and then I-profile composite supports were added to these panels. The impact strength, and damage behavior of supported, and unsupported specimens under low-velocity impact were compared numerically. In the analysis, the MAT22 material card, also known as the Chang-Chang damage model for composite material, was used in the LS-DYNA program. As a result of the analysis, maximum damage load of the unsupported specimen is determined to be approximately 294 N. It was determined that by adding an I profile to the structure, the maximum damage load increased to 543 N. It was seen that the added I profile supports increased the maximum contact force of the composite structure by approximately 85%. Fiber breakage damages were observed in both supported, and unsupported specimens. However, with the use of I profile support, the damaged area was further reduced. It has been determined that under low-velocity impact, supported specimens exhibit more rigid material behavior than unsupported specimens.

Anahtar Kelimeler

u-profile composite, Chang-Chang failure criteria, I profile, impact, MAT22.

Etik Beyan

Not applicable

Destekleyen Kurum

This study was supported by Scientific and Technological Research Council of Turkey (TUBITAK) under the Grant Number 123M357

Proje Numarası

123M357

Teşekkür

Acknowledgments This study was supported by Scientific and Technological Research Council of Turkey (TUBITAK) under the Grant Number 123M357. The authors thank to TUBITAK for their supports.

Kaynakça

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