TOPOLOGY OPTIMIZATION AND DAMAGE TOLERANCE ANALYSIS OF N-219 AIRCRAFT WING AND FUSELAGE FITTING

• Main Author: Faruq Al Jamal, Muhamad
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/49080
• Institution: Institut Teknologi Bandung

Improving performance of the N-219 aircraft that made by PT Dirgantara Indonesia must be done along with the increasing need for aircraft as a means of transportation to connect the islands in Indonesia. One thing that can be done to improve the performance of N-219 aircraft is to reduce the weight of the aircraft's structure. The benefit of reducing the structural weight of an aircraft is that fuel consumption can be reduced and the payload weight can increase so that the benefits on each flight can increase. Aircraft structure optimization must be done so that the weight of the structure can be reduced. Several types of optimization can be done; one of the ways is to do the topology optimization. This optimization can be done with optistruct software. In this final project, topology optimization is applied to the wing and fuselage fitting planes. This optimization is based on the maximum loading value. Optimization results must produce designs that are lighter in weight. The optimized design will experience design improvements so that the design can still be manufactured. Optimization design, after being improved, will pass the static test validation stage. The software used in this process is Abaqus. In this final project, damage tolerance analysis of the the wing and the fuselage fitting is also carried out by Abaqus and Matlab. This analysis is carried out in the initial design and also the design of optimization results. The goal is to compare the strength of the structure to withstand fatigue. Optimized design can be said to be successful when the structural strength to withstand fatigue loads is not lower than the initial design or has the same minimum service life as the initial design. Determination of the inspection interval and the residual strength of the design results of the optimization are also explained in this final project. After going through several stages, this final project succeeded in producing an optimized design that weighs less than the initial design, pays attention to manufacturing aspects, can withstand maximum static loading, and also has structural strength to fatigue loads which is slightly better than the initial design.