LATTICE BASED STRUCTURE DESIGN AS PASSENGER PROTECTION ON IMPACT HEAD LOADING

• Main Author: Febry Rahmat, Farhan
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/53165
• Institution: Institut Teknologi Bandung

The use of lattice-based cell structures as energy-absorbing structures continues to evolve over time. Currently the lattice structure has been used in various platforms, such as the structure of vehicle battery protection, impact protection, explosion protection, aircraft structures and body implants. The development of the use of lattice-based structures can be understood because the characteristics of these structures are light, strong but easy to deform so that their capacity to absorb impact energy is quite high. In this study, a study was conducted on the use of lattice-based structures as head protection structures with front impact dynamic loading cases according to FMVSS 201U regulatory guidelines. The research was started by carrying out a calibration test according to the guidelines for LSTC FMH as a form of validation and reference, then continued with making a model of the Body Centered Cube (BCC) type lattice structure. Based on the performance requirements of FMVSS 201U, the impact rate is 15 mph or equivalent to 6.7 m/s With 16 design variations composed of a combination of 4 material variations (EPS 30, EPS 60, EPP 20, EPP 60) and 4 thickness variations (15, 19.5, 24, 30 mm). The results obtained are that none of the designs with EPS 60 and EPP 60 material meet the safety criteria of HIC (d) <1000, only 3 designs have successfully met these criteria, namely designs using EPP 20 material with a thickness of 24 and 30 mm and designs using EPS material. 30 with a thickness of 30 mm.