Zefry Darmawan, Shigeyuki Haruyama, Ken Kaminishi
Heavy operating vehicle was used in many surfaces condition, sometimes in heavy terrain with high possibilities of rollover accident. Rollover is a fatal condition where the equipment shifted from its stability and move toward the ground. Consequently, the use of a rollover protecting structure or cab frame as a standard safety was an effort to protect operator from the accident. Numerical approach using finite element method generated a simple square of cab frame combined with design experiment of Taguchi's orthogonal array. A set of 11 single bars compiled into entire cab frame where each bar has 2 thickness levels and total 12 simulations were required. Furthermore, every simulation compares each other to produce the highest energy absorption during collision. Finally, the highest result then optimized using Taguchi's control chart. Thickness is known as a prime factor in structural design which can increase energy absorption and reduce buckling at certain area. The highest energy absorption obtained in the optimized model was valuable for prototyping development of cab frame. © 2018 Author(s).
Brawijaya University, Jl. MT Haryono 167, Malang, 65145, Indonesia; Yamaguchi University, 2-16-1 Yamaguchi, Ube City, Tokiwadai, 755-8611, Japan
