NUMERICAL STUDY OF THE EFFECT OF WALL THICKNESS AND INTERNAL PRESSURE ON VON MISES STRESS AND SAFETY FACTOR OF THIN-WALLED CYLINDER FOR ROCKET MOTOR CASE

Authors

  • Lasinta Ari Nendra Wibawa LAPAN

DOI:

https://doi.org/10.23887/jstundiksha.v9i1.24484

Keywords:

internal pressure, numerical study, rocket motor case, thin-walled cylinder, wall thickness

Abstract

The rocket motor is an important part of rockets. The rocket motor works using the pressure vessel principle because it works in an environment with high pressure and temperature. This paper investigates the von Mises stress that occurs in thin-walled cylinders and safety factors for rocket motor cases due to the influence of the wall thickness and internal pressure. Dimensions of the cylinder length are 500 mm, outer diameter is 200 mm, and cap thickness is 30 mm. The wall thickness is varied 6, 7, 8, and 9 mm, while the internal pressure is varied 8, 9, and 10 MPa. Stress analysis is performed using the finite element method with Ansys Workbench 2019 R3 software. The simulation results show that the maximum von Mises stress decreases with increasing wall thickness. The maximum von Mises stress increases with increasing internal pressure. The material has a safety factor higher than 1.25 for all variations in wall thickness and internal pressure. It means that the material can withstand static loads. The verification process is done by comparing the results of finite element analysis with analytical calculations for maximum hoop stress and maximum axial stress with a fixed boundary condition. The results of maximum hoop stress and maximum axial stress using finite element analysis and analytical calculations are not significantly different. The percentage of errors between analytical calculations and finite element analysis is less than 6 percent.

Author Biography

Lasinta Ari Nendra Wibawa, LAPAN

Lasinta Ari Nendra Wibawa, S.T., M.T., lahir di Sukoharjo, 28 Januari 1988. Menulis jurnal ilmiah, artikel, puisi, cerpen, novel, esai, opini, resensi, reportase, geguritan, dan lagu. Karyanya pernah dimuat di 93 media massa lokal dan nasional, antara lain Jurnal Simetris, Jurnal Turbulen, Jurnal JTM-ITI, Jurnal Polimesin, Journal Technology and Implementation Business, Jurnal Crankshaft, Jurnal Flywheel, Jurnal Angkasa, Jurnal Energi dan Teknologi Manufaktur (JETM), Jurnal Teknologi, Jurnal Machine, Jurnal Manutech, Media Mesin, Jurnal Mechanical, Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, Lecture Notes in Mechanical Engineering, Jurnal Teknika, Jurnal Teknologi Dirgantara, AIP Conference Proceeding, Kompas, Jawa Pos, Seputar Indonesia, Media Indonesia, Basis, Horison, Annida, Sabili, Swara Nasional, Sabana, Jaya Baya, Sagang, National Geographic Indonesia, Psikologi Plus, Gaul, Keren Beken, Aneka Yess, Suara Muhammadiyah, Sumut Pos, Mimbar Umum, Medan Bisnis, Riau Pos, Metro Riau, Haluan, Ogan Ilir Ekspres, Tanjungpinang Pos, Jurnal Masterpoem Indonesia, Sriwijaya Post, Pontianak Post, Banjarmasin Post, Mata Banua, Kendari Pos, Cakrawala, Sinar Harapan, Radar Bogor, Pikiran Rakyat, Indopos, Satelit Post, Suara Merdeka, Solopos, Merapi Pembaruan, Joglosemar, Gradasi, Cempaka, Radar Surabaya, Malang Post, Radar Banyuwangi, Koran Madura, Ekspresi, Pos Bali, Bali Post, dan Cenderawasih Pos. Belasan kali menjuarai lomba kepenulisan, antara lain juara 1 lomba menulis artikel tingkat nasional yang diadakan oleh IMM Ki Bagus Hadikusumo (2010), juara 1 lomba menulis artikel yang diadakan oleh BEM FKIP UNS (2010), juara 2 lomba menulis artikel yang diadakan oleh LPM Motivasi FKIP UNS (2010), karya ilmiahnya lolos seleksi PKM Dikti tahun 2010 dan 2011, juara 1 lomba menulis puisi yang diadakan oleh Komunitas Penulismuda Indonesia (2010), pemenang favorit LMCR Rohto tahun 2010 dan 2011, juara harapan 1 lomba menulis puisi mengenang Chairil Anwar (2011), juara 1 lomba menulis esai dakwah yang diadakan oleh KAMMI Barabai-Kalimantan Selatan (2012), juara 1 lomba menulis puisi tingkat nasional yang diadakan oleh Penerbit AGP (2013), dan juara 1 lomba menulis puisi tingkat nasional yang diadakan oleh FAM Indonesia tahun 2014 dan 2017. Karyanya juga diterbitkan di lebih dari 30 buku antologi bersama, antara lain Perempuan Yang Tak Layu Merindu Tunas Baru (FAM Publishing, 201), Yang Tampil Beda Setelah Chairil (YHPI, 2016), Nun (YHPI, 2015), Pelabuhan Merah (Riau Pos, 2015), Tentang Kota Yang Menjaga Takbir dalam Degup Dada (FAM Publishing, 2015), Berbagi dengan Hati (Nulisbuku, 2015), Sepucuk Angin Merah (Pustaka Puitika, 2014), Bersepeda ke Bulan (Indopos, 2014), Negeri Langit (Kosakatakita, 2014), Senarai Diksi (Pena House, 2014), Merawat Ingatan Rahim (Jejer Wadon & Komnas Perempuan, 2013), Amarah (Gramedia, 2013), Sebab Cinta (Elmatera, 2013), Lelaki Tua dengan Tato di Dadanya (Leutika Prio, 2013), Ayat-ayat Rindu (Star Publishing, 2013), Terpenjara di Negeri Sendiri (Alif Gemilang Pressindo, 2013), Buku Sakti Menulis untuk Remaja (Balai Soedjatmoko, 2013), Presiden Untuk Presidenku (SANY Publishing, 2013), Mengenang… (Jagad Abjad, 2012), Flows into the Sink into the Gutter (Shell, 2012), Ranggawarsita (Pawon, 2012), Karena Aku Tak Lahir dari Batu (SW Publisher, 2012), Diverse (Shell, 2012), Ukara Geni (Pawon, 2012), Jembatan Sajadah, Kabar dari Negeri Seberang (Umahaju Publisher, 2013), Puisi Adalah Hidupku (Leutika Prio, 2012), Sebatang Rusuk Untukmu (Samudra, 2011), Menolak Lupa (Unggun Religi, 2010), Hujan Cinta (Gradasi, 2010), dan Phantasy Poetica (PM Publisher, 2010). Namanya termaktub dalam buku Apa dan Siapa Penyair Indonesia (YHPI, 2017). Buku kumpulan puisinya yang berjudul Alpha Centauri (Shell, 2012) menjadi referensi di University of Washington Libraries (Seattle, USA) dan Library of Congress (Washington, USA). Buku kumpulan puisi lainnya berjudul Merintis Gerimis (Mujahid Press, 2015) dan Pelajaran Kincir Angin (Buku Katta, 2017)--yang merupakan buku duet bersama Kinanthi Anggraini. Buku kumpulan cerpennya berjudul Namaku Prana (Dirgan Publishing, 2018). Tahun 2018, ia menerbitkan buku perancangan teknik gambar 3D yang berjudul Merancang Komponen Roket 3D dengan Autodesk Inventor Professional 2017 (Buku Katta) dan Simulasi Kekuatan Komponen Sarana Pengujian Roket Menggunakan Autodesk Inventor Professional 2017 (Buku Katta). Menduakan Doa merupakan judul novel perdananya. Karya-karyanya dapat dijumpai di situs amazon.com, google play, dan google books. Ia pernah menjabat sebagai Pemred LPM Eureka dan Ketua Divisi Media dan Apresiasi KMTM FT UNS. Beberapa kali ia menjadi narasumber tentang dunia Iptek di radio Solopos FM. Alumnus Teknik Mesin UNS ini bekerja sebagai PNS di Lembaga Penerbangan dan Antariksa Nasional (LAPAN) sejak tahun 2014. Tahun 2016-2017, ia menduduki posisi sebagai Pejabat Pembuat Komitmen (PPK) di Balai Uji Teknologi dan Pengamatan Antariksa dan Atmosfer Garut. Tahun 2017, ia terpilih menjadi salah satu Agen Perubahan LAPAN. Tahun 2018, ia mendapatkan beasiswa dari LAPAN untuk melanjutkan studinya di Program Pascasarjana Teknik Mesin Universitas Sebelas Maret (UNS), Surakarta.

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Published

2020-06-15

Issue

Vol. 9 No. 1 (2020)

Section

Articles

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