Pratiwi, Heti (2018) Analisis Pengaruh Desain Proyektil Dan Muzzle Velocity Terhadap Terminal Balistik Gelatin Peluru Frangible Dengan Menggunakan Metode Elemen Hingga. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Peluru konvensional dapat menimbulkan terjadinya ricochet dan backsplash. Peluru frangible adalah salah satu jenis peluru yang tidak menimbulkan efek ricochet dan backsplash. Hal ini dikarenakan peluru frangible akan terpisah menjadi fragmen-fragmen kecil ketika mengenai target keras. Balistik gelatin merupakan bagian dari terminal balistik dimana target yang digunakan adalah medium yang lebih padat daripada air yang biasa disebut dengan gelatin. Tujuan penelitian ini adalah untuk menganalisis nilai balistik terminal gelatin akibat pengaruh desain dan variasi muzzle velocity dengan menggunakan metode elemen hingga.Dari hasil simulasi yang telah dilakukan dengan variasi muzzle velocity dan desain yang berbeda didapatkan total penetrasi pada desain peluru I secara berurutan yaitu sebesar 175 mm, 190 mm dan 193 mm. Sedangkan total penetrasi yang diperoleh dari hasil simulasi desain peluru II secara berturut sebesar 200 mm, 220 dan 230 mm. Desain peluru I diameter temporary cavity secara berturut adalah 19 mm, 23 mm dan 30 mm. Sedangkan untuk desain peluru II diameter temporary cavity secara berturut-turut adalah 21 mm, 24 mm dan 11 mm. Dari dua desain peluru yang ada, total penetrasiyang dihasilkan tidak sesuai dengan standar. Diperlukan desain baru dengan menambahkan radius kelengkungan proyektil sehingga koefisien bentuk proyektil berada pada rentang 0.5 < i < 1 untuk desain peluru I agar penetrasi yang dihasilkan memenuhi standar. ==========================================================================================================
The conventional bullets are made of various lead alloys (Pb) because it’s density is relatively higher than other metals, so as to produce bullets with great momentum. The conventional bullets can cause ricochet and backsplash. Frangible bullet is one of type bullet that does not cause ricochet and backsplash effects. This is because the frangible bullet will separate into small fragments when it comes to hard targets. Ballistic gelatin is part of the ballistic terminal where the target used is a medium that is more dense than water commonly referred to as gelatin. The purpose of this research is to analyze the ballistic value of gelatin terminal due to the influence of design and variation of muzzle velocity using finite element method. From simulation result which have been done with variation of muzzle velocity and different design obtained total penetration on bullet design I in sequence that is equal to 175 mm , 190 mm and 193 mm. While the total penetration obtained from the simulation results of bullet II designs are 200 mm, 220 and 230 mm respectively. The bullet design I diameter of temporary cavity is 19 mm, 23 mm and 30 mm, respectively. While for the design of bullet II the diameter of temporary cavity are 21 mm, 24 mm and 11 mm, respectively. Of the two existing bullet designs, the resulting total penetration does not conform to existing standards. New design is required by adding a projectile curvature radius so that the projectile form coefficient is in the range of 0.5 <i <1 so that the resulting penetration meets the existing standards.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSMt 629.45 Pra a-1 3100018075929 |
| Uncontrolled Keywords: | Bentuk Proyektil; Balistik Gelatin; Metode Elemen Hingga |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA347 Finite Element Method U Military Science > U Military Science (General) |
| Divisions: | Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | Heti Pratiwi |
| Date Deposited: | 05 Dec 2018 16:49 |
| Last Modified: | 02 Oct 2020 04:11 |
| URI: | http://repository.its.ac.id/id/eprint/53230 |
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