Evaluasi Numerik Untuk Delaminasi Tengah Pada Pelat Komposit Dengan Model Cohesive Zone

Umar, Mega Lazuardi (2016) Evaluasi Numerik Untuk Delaminasi Tengah Pada Pelat Komposit Dengan Model Cohesive Zone. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Semakin berkembangnya material komposit, menjadikan komposit sebagai material yang sering menjadi concern bahan penelitian. Namun, komposit juga bisa mengalami kegagalan,salah satunya adalah delaminasi. Delaminasi adalah fenomena kerusakan yang bisa menyebabkan kurangnya kekuatan, kekakuan, dan kemampuan menahan beban pada material. Oleh sebab itu, penulis mengulas beberapa pengaruh ukuran, lokasi, konfigurasi lay-up, dan distribusi initial crack terhadap respon delaminasi pada material komposit. Komposit yang digunakan pada penelitian ini adalah carbon/epoxy yang disimulasikan pada ANSYS Mechanical/APDL. Dari hasil simulasi didapatkan bahwa semakin panjang initial crack, reaction force yang dibutuhkan untuk membuka interface element delaminasi tengah semakin kecil. Sebaliknya, semakin pendek initial crack, reaction force-nya semakin besar. Lokasi dan distribusi initial crack juga berhubungan dengan ketebalan, dimana nilai ketebalan menyebabkan perbedaan reaction force untuk membuka interface. Sementara itu, konfigurasi serat unsymetric lebih tahan terhadap fenomena delaminasi daripada konfigurasi symetric. ================================================================================================== Development of material composit in modern era, made composit as the concern of material research. However, composite may fail, one of the failure phenomena in composite material called delamination. Delamination is phenomenon of damage that cause reduction in strength, stiffness, and load carrying. Because of that, some effect of size, location, lay-up configuration, and distribution of initial crack on the respon to the delamination phenomenon discussed in this research. The composite material used in present study is carbon/epoxy lamina simulatied in ANSYS Mechanical/APDL. The result show that, more longer initial crack, reaction force needed to open interface element in the middle delamination is getting smaller. Cenversely, the shorter inititial crack, reaction force is getting higher. The location and distribution of initial crack is also related to the, where the value of thickness, causing differences in reaction force to open the interface. Meanwhile, unsymetric configuration are more resistant to delamination phenomena than symetric configuration.

Item Type: Thesis (Undergraduate)
Additional Information: RSMt 620.118 Uma e 3100016066390
Uncontrolled Keywords: Cohesive, Composite, Delamination, Interface Element, Numerical Analysis, Analisa Numerik, Cohesive, Delaminasi, Interface Element, Komposit
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA418.9 Composite materials. Laminated materials.
Divisions: Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User: - Davi Wah
Date Deposited: 22 Feb 2020 16:34
Last Modified: 25 Feb 2020 07:37
URI: http://repository.its.ac.id/id/eprint/75108

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