Article Per Year (5 Year)
p-Index From 2019 - 2024
0.947
P-Index
This Author published in this journals
All Journal Jurnal Fisika Unand Jurnal Teknologi Dirgantara Prosiding Seminar Nasional Ilmu Teknik Dan Aplikasi Industri Fakultas Teknik Universitas Lampung
Budi Aji Warsiyanto
Universitas Dirgantara Marsekal Suryadarma
Aerospace Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Electrical & Electronics Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics

Published : 5 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 5 Documents
Search

 1 
The Effect of Cross-section and Elliptical Hole Ratio on Crashworthiness Parameters of Crash-Box Structure Budi Aji Warsiyanto
Jurnal Teknologi Dirgantara Vol 19, No 1 (2021)
Publisher : National Institute of Aeronautics and Space - LAPAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30536/j.jtd.2021.v19.a3408

Abstract

The thin-walled column structure or crash-box with metal material and consisting of multi-cell were found to be much more efficient in energy absorption than single-cell under axial impact loads. In this study, a numerical analysis was performed using the Abaqus finite element method for the cross-section differences in thin-walled column structures. The cross-section differences are compared to get a configuration that complies with the indicator parameters using the complex proportional assessment (COPRAS) method. The chosen cross-section configuration is further enhanced by creating elliptical holes with different diameter ratios. The results show that the thin-walled column structure with nine-cell cross-section accompanied by an elliptical hole ratio of 0.3 indicates the potential corresponding to the indicator parameters for the crashworthiness application.
Dynamic response of the wing during UAV collision Budi Aji Warsiyanto
Jurnal Teknologi Dirgantara Vol 19, No 1 (2021)
Publisher : National Institute of Aeronautics and Space - LAPAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30536/j.jtd.2021.v19.a3514

Abstract

An airborne collision between civil Unmanned Aerial Vehicles (UAVs) and manned aircraft is a potential threat to aircraft operation safety. In this paper, the UAV collision test was performed on a commuter aircraft wing section to investigate the dynamic response of this primary operation component. The projectile was a 735 g drone named ‘Mavic’. Explicit dynamic code ABAQUS was employed to simulate the collision process based on the difference of collision scenarios to assess the hazard. The results showed that 735 g drone impact at the aircraft maximum approach flap and cruising speed could cause some damage on the wing front spar and the situation is more serious than 910 g bird strike in which the hardness of drone components rather than kinetic energy is a decisive factor. The lithium-ion battery penetrated the airframe which may be a potential source of ignition.
The effect of Impact Angle on Dynamic Response of 19 Passenger Commuter Aircraft Windshield against Bird Strike Budi Aji Warsiyanto
Jurnal Teknologi Dirgantara Vol 19, No 2 (2021)
Publisher : National Institute of Aeronautics and Space - LAPAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30536/j.jtd.2021.v19.a3560

Abstract

This paper's objective was to determine the dynamic response of a 19 passenger commuter aircraft windshield to impact angle variations. The phenomenon was performed using the finite element method, and the smoothed particle hydrodynamics (SPH) was chosen as a method for modeling bird material. The elastic-plastic polymethyl methacrylate (PMMA) material with the maximum principal strain failure criterion was used to model the windshield's dynamic response. The variation of the impact angle consists of 15°, 0°, -8°, and -15°, which are measured of the longitudinal axis of the aircraft. The simulation result showed that the impact angle that causes the windshield's dynamic response in the elastic, plastic deformation, and the greatest failure is the angle -15°. The upper end of the windshield (fixed) is the weakest part due to the stress concentration.
Analisis tabrak burung pada windshield pesawat komuter 19 penumpang dengan variasi perbedaan massa burung B A Warsiyanto; A Nurrohmad*; R Fitriansyah; S A Sitompul; A B Utama
Prosiding Seminar Nasional Ilmu Teknik Dan Aplikasi Industri Fakultas Teknik Universitas Lampung Vol. 3 (2020)
Publisher : Fakultas Teknik Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (756.092 KB) | DOI: 10.23960/prosidingsinta.v3i.11

Abstract

Dalam pengembangan pesawat terbang supaya laik untuk dioperasikan perlu dilakukan proses sertifikasi. Rangkaian kegiatan sertifikasi ini dimaksudkan untuk menjamin bahwa pesawat aman dan memiliki resiko kecelakaan sekecil mungkin. Salah satu tahapan yang harus dilakukan pada proses sertifikasi pesawat 19 penumpang sesuai standar Civil Aviation Safety Regulation (CASR) 23 adalah uji tabrak burung, khususnya pada komponen windshield. Penelitian ini bertujuan untuk mengetahui respon dinamik windshield terhadap variasi massa burung. Pemodelan numerik Metode Elemen Hingga eksplisit-dinamik digunakan untuk mensimulasikan fenomena tabrakan burung. Material polimetil metakrilat plastis-elastis (PMMA) dengan kriteria kegagalan maximum principle strain digunakan untuk memodelkan respons dinamis windshield. Pemodelan numerik divalidasi dengan analisis eksperimental pada kasus serupa yang kemudian digunakan untuk mengetahui pengaruh variasi massa burung terhadap respons dinamis windshield.  Hasil penelitian diperoleh bahwa massa burung yang menyebabkan respon dinamik windshield dalam keadaan elastis, deformasi plastis, dan kegagalan terbesar adalah massa burung sebesar 1,81 kg. Windshield area paling atas  merupakan bagian terlemah akibat tingginya konsentrasi tegangan.
Numerical Simulation of Bird Strike with Varied L/D Ratio in Hemispherical-ended Cylinder Bird Model Using Coupled Eulerian Lagrangian Method Endah Yuniarti; S Afandi Sitompul; B Aji Warsiyanto
Jurnal Fisika Unand Vol 12, No 4 (2023)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.12.4.628-638.2023

Abstract

This research studies the numerical simulation of the finite element method for bird strike using a hemispherical-ended cylinder bird model with varying length-to-diameter (L/D) ratio, namely 1.4; 1.5; 1.6; 1.7; 1.8; 1.9; and 2.0. Birds are modelled with elastic, plastic, and hydrodynamic behaviour. The bird model uses the Coupled Eulerian-Lagrangian (CEL) method with impact speeds of 100 ms-1, 200 ms-1, and 300 ms-1. The simulation results show that the Hugoniot pressure value is around 15-36 times higher than stagnation pressure in L/D 1.4; 14-36 times in L/D 1.5; 13-30 times in L/D 1.6; 12-32 times in L/D 1.7; 12-26 times in L/D 1.8; 13-30 times in L/D 1.9; and 13-29 times in L/D 2.0. It was found that the highest Hugoniot and stagnation pressure were in L/D 1.5 and 1.8, while the lowest Hugoniot and stagnation pressure were in L/D 2.0 and 1.5, respectively. In addition, the error of the numerical results of the average Hugoniot and stagnation pressure value compared to the analytic was 2.9% and 7%, respectively. 
Co-Authors A B Utama A Nurrohmad* Endah Yuniarti, Endah R Fitriansyah S A Sitompul Sitompul, Sahril Afandi