Maydiyanto, Ismail (2018) Rancang Bangun Composite Sandwich Panel untuk Chassis Monocoque Elektrik ITS. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Tim Formula Electric Institut Teknologi Sepuluh Nopember (ITS) untuk pertama kalinya berpartisipasi pada Student Formula Japan (SFJ) di Shizuoka Ecopa Stadium Japan. Terdapat dua jenis chassis yang mengikuti regulasi standar FSAE yaitu space frame chassis dan monocoque chassis. Tim Formula Electric menggunakan composite monocoque chassis berbahan sandwich carbon fiber dengan core aluminum honeycomb. Tim yang mengikuti kompetisi FSAE dan menggunakan chassis monocoque wajib menyertakan sructural eqiuivalency dengan melakukan tiga jenis pengujian yaitu 3-point bending test, perimeter shear test dan Perimeter Tensile Test. 3-point bending test digunakan untuk mengetahui stiffness dari spesimen. Perimeter shear test digunakan untuk mengetahui kekuatan skin dari spesimen. Perimeter Tensile Test digunakan untuk mengetahui ketahanan dari spesimen terhadap beban tarik. Penelitian ini bertujuan untuk mengetahui stiffness dari spesimen-spesimen 3-point bending dengan tiga metode yaitu metode analysis, simulasi dan eksperimen, kekuatan skin dari spesimen perimeter shear dengan metode eksperimen dan kekuatan tarik dari spesimen perimeter tensile dengan metode eksperimen
Pada penelitian ini mengadaptasi metode analysis dan simulasi yang dilakukan oleh Robert D. Story untuk mencari stiffness pada spesimen 3-point bending, menggunakan failure analysis yang digunakan oleh A. Petras, M.P.F Sutcliffe untuk mencari beban maksimal pada dua belas spesimen. Spesimen-spesimen tersebut memiliki tiga variasi jumlah layer yang berbeda yaitu tiga, empat dan lima layer. Masing-masing jumlah layer terdapat variasi layup orientation. Semua nilai stiffness yang didapatkan dari metode analysis dan simulasi selanjutnya akan dipilih untuk masing-masing primary structure. Setelah terpilih jumlah layer dan layup orientation untuk masin-masing primary structure selanjutnya dilakukan metode eksperimen yang berupa pengujian 3-point bending, perimeter shear strength dan perimeter tensile test.
Dari penelitian ini didapatkan stiffness dari tiga metode yang berbeda yaitu metode analysis, simulasi dan eksperimen. Dari metode analysis didapatkan stiffness untuk spesimen tiga, empat dan delapan layer secara berurutan adalah 2323.332 N/mm, 2859.01 N/mm dan 6591.04 N/mm. Dari metode simulasi didapatkan stiffness unuk spesimen tiga, empat dan delapan layer secara berurutan adalah 3476.085 N/mm, 4338.96 N/mm dan 9654.768 N/mm. Dari metode eksperimen stiffness spesimen tiga, empat dan delapan layer secara berurutan adalah 2129 N/mm, 2791 N/mm dan 5895 N/mm. Skin strength yang didapatkan dari metode eksperimen untuk spesimen empat dan delapan layer adalah 62.8 MPa dan 168.9 MPa. Perimeter tensile force yang didapatkan dari metode eksperimen untuk spesimen 4 layer adalah 22.5 kN. Setelah mamasukkan data dari nilai stiffness, skin strength dan perimeter tensile force ke dalam file Structural Equivalency Spreadsheet, nilai-nilai tersebut telah memenuhi regulasi dari kompetisi FSAE.
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The Formula Electric Team of Sepuluh Nopember Institute of Technology (ITS ) for the first time participated in Student Formula Japan (SFJ) at Shizuoka Ecopa Stadium Japan. There are two types of chassis that follow the FSAE standard regulation of space frame chassis and monocoque chassis. Formula Electric team uses composite monocoque chassis made from carbon fiber sandwich with aluminum honeycomb core. Teams that follow the FSAE competition and use the monocoque chassis must include sructural eqiuivalency by performing three types of testing ie 3-point bending test, perimeter shear test and Perimeter Tensile Test. 3-point bending test is used to determine the stiffness of the specimen. Perimeter shear test is used to determine the skin strength of the specimen. Perimeter Tensile Test is used to determine the resistance of specimens to tensile loads. This study aims to determine the stiffness of 3-point bending specimens with three methods of analysis, simulation and experiments, skin strength of perimeter shear specimens by experimental method and tensile strength of tensile perimeter specimens by experimental method
In this study adapted the method of analysis and simulations performed by Robert D. Story to find the stiffness of a 3-point bending specimen, using the failure analysis used by A. Petras, MPF Sutcliffe to find the maximum load on twelve specimens. The specimens have three different number of layers: three, four and five layers. Each layer number is a variation of layup orientation. All stiffness values obtained from the analysis and simulation methods will then be selected for each primary structure. After the selected number of layers and layup orientation for each of the primary structure, the experimental method is done in the form of 3-point bending test, perimeter shear strength and perimeter tensile test.
From this research, we get stiffness from three different method that is method of analysis, simulation and experiment. From the analysis method, the stiffness for three, four and eight layerwere specimens2323,332 N/mm, 2859.01 N/mm and 6591.04 N/mm, respectively. From the simulation method, the stiffness for the three, four and eight layer specimens was 3476,085 N / mm, 4338.96 N/mm and 9654,768 N/mm respectively. From the experimental methods of stiffness of three, four and eight layers specimens were 2129 N/mm, 2791 N/mm and 5895 N/mm, respectively. The skin strength obtained from the experimental method for the four and eight-layer specimens was 62.8 MPa and 168.9 MPa. The tensile force perimeter obtained from the experimental method for a 4-layer specimen is 22.5 kN. After entering data from the stiffness, skin strength and perimeter tensile force values into the Structural Equivalency Spreadsheet file, they meet the regulations of the FSAE competition.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSM 621.183 May r 3100018076473 |
| Uncontrolled Keywords: | 3-point bending, stiffness, perimeter shear test, kekuatan skin, Perimeter Tensile Test, beban tarik, structural equivalency spreadsheet |
| Subjects: | T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL220 Electric vehicles and their batteries, etc. |
| Divisions: | Faculty of Industrial Technology > Mechanical Engineering > 21201-(S1) Undergraduate Thesis |
| Depositing User: | Ismail Maydiyanto |
| Date Deposited: | 19 Feb 2019 02:31 |
| Last Modified: | 30 Dec 2020 06:36 |
| URI: | http://repository.its.ac.id/id/eprint/58091 |
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