Design, modelling and side-crash analysis of pillar C and D for a sub urban vehicle

• Main Authors: Ibrahim, Md, Sangeethkumar, E., Ramanathan, V., Jaikumar, M., Paul, R. Christu, Selvakumar, R., Nakandhrakumar, R. S., Arulananthasamy, S.
• Format: Conference Proceeding
• Language: English
• Subjects: Air bags; Automobiles; Crashworthiness; Crossovers; Design; High strength steel; High strength steels; Impact strength; Magnesium; Weight
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/5.0216327

Due to rise in vehicle costs, the majority of families are unable to purchase the expensive car that comes equippedwith a side curtain airbag, which is a passive safety feature. To improve the crashworthiness of the vehicle, it is crucial to strengthen pillars C and D using constrained geometric optimization. It is concerned that the vehicle testing was not an accurate representation of the types of collisions that are likely to occur in the real world, particularly for pillar C and D. The buyers who mostly preferred a Small SUV or Crossover in which pillar A and B consists of high strength steel but notin pillar C and D in order to reduce the vehicle weight and cost cutting. In terms of maximum deflection and specific energyabsorption, the modified geometric design was superior to the existing design. Most of the lower car models lack these amenities, such as side curtain airbags, making them risky for rear-seat passengers. It is crucial since there is a high demandfor crossover cars with four pillars on each side of the car. This research will be based on the SUV and Crossover cars. Two geometric designs and crash tests on the present model were included in this research, one with the body design of the existing structure and the other with the body design with addition of 0.7 mm thick sheets to the pillar C and D structures. The current material known as Body in White (BIW) material, is typically composed of 70% steel, 30% aluminium and magnesium. The new designed pillars C and D are made of Advanced High Strength Steel (AHSS). In comparison between existing model and newly developed model with a new material for pillar C and D, the strength of the new model was noticed very high. With old and new materials, the deformation in the pillars are roughly 68% lesser, and the overall weight difference was 1.325 kg. It was found that the newly designed pillar C and D is superior to the existing model.