Scientific Speech by ITB Professor, Prof. Leonardo Gunawan, Reveals Major Breakthroughs in Flexible Body Dynamics Analysis
BANDUNG, itb.ac.id – The Institut Teknologi Bandung (ITB) Professorial Forum held a scientific speech at ITB's West Hall on Saturday (16/3/2024). In a speech titled "Development of Flexible Body Dynamics Analysis Capabilities to Support Engineering Independence in Indonesia", Prof. Dr. Ir. Leonardo Gunawan presented various findings and his research.
Prof. Leonardo currently serves as the Head of the Dynamics and Control Expertise Group at the Faculty of Mechanical and Aerospace Engineering (FMAE) at ITB. He has presented various research published both internationally and nationally, producing 60 papers in the form of journals and proceedings, as well as receiving several prestigious awards.
During his speech, Prof. Leonardo highlighted the importance of developing dynamic analysis of flexible bodies to support technological independence in Indonesia. His presentation covered dynamic behavior analysis on vehicles and aircraft structures.
The model used in this research involves mass, stiffness, and damping to analyze responses due to disturbances such as road or rail irregularities in vehicles like cars or trains.
He emphasized advancements in aircraft design and structural analysis. Various configurations for flight missions were evaluated, including analysis and testing of structures for flexible and plastic deformation. Simulation model development was carried out to enhance impact and explosion resistance in vehicle structures.
One of the main aspects of this research is the development of a flutter analysis model for fighter aircraft. In the development of the fighter aircraft flutter analysis model, Prof. Leo explained that the model was completed for a no-airflow case. It was found that the first bending occurred at 18.3 Hz and the first torsional mode at 100.1 Hz.
He also noted that at a flutter speed of about 1200 m/s, instability occurs far above the aircraft's maximum speed. Nonetheless, he stressed that the aircraft remains safe. However, Prof. Leo indicated that the fighter aircraft model was still incomplete because it only evaluated the wing model without the body. “We still need to develop a model that incorporates the aircraft body and evaluates its vibrational modes and natural frequencies in complete conditions,” he said.
Additionally, Prof. Leonardo discussed research results with PT. Pindad regarding the design and evaluation of blast-resistant panel structures. Simulation results showed design modifications to the seats that increased passenger safety. Realistic blast test demonstrations showed increased passenger safety due to structural improvements.
He also played a video demonstrating blast test experiments. In the demonstration, Prof. Leonardo explained the estimated injuries to passengers after the vehicle was bombed.
Lastly, at this current moment, he, along with the FMAE ITB team and several other universities, are analyzing the simulation speed of collisions at 10m/s (SNI 8826) in the development of the Red and White high-speed train model.
The scientific speech by Prof. Dr. Ir. Leonardo Gunawan marked an important step in the development of engineering activities in the fields of transportation, defense, and other areas in Indonesia.
Reporter: Syabina Er Said (Aerospace Engineering, 2020)
Translator: Anggi Nurdiani (Management, 2024)
Editor: Hanifa Juliana (Urban and Regional Planning, 2020)
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