DESIGN AND ANALYSIS OF CONTINUOUS FIBER REINFORCED THERMOPLASTIC COMPOSITE B-PILLAR OF A PASSENGER CAR


Öztürk Yılmaz İ., Bilici A. Y. , Yazıcı M.

ICCS23 - 23rd International Conference on Composite Structures & MECHCOMP6 - 6th International Conference on Mechanics of Composites, Porto, Portugal, 1 - 04 September 2020, vol.1, no.1, pp.72

  • Publication Type: Conference Paper / Summary Text
  • Volume: 1
  • City: Porto
  • Country: Portugal
  • Page Numbers: pp.72

Abstract

The new regulations introduced in the automotive industry, make CO2 emissions reduced to 95 g / km today. Also, one of the most critical obstacles to the evolution of the automotive sector from internal combustion engines to hybrid and electric motor vehicles is the limited range problem. The best-known solution method for both problems is to decrease vehicle weight. Only 1% of the energy produced by fuel

in a vehicle is used to carry the driver. 67% to 75% of the energy produced by fuel is used to move the vehicle’s weight. Therefore, vehicle manufacturers are looking for new ways to make vehicles lighter. Substituting metal parts with equivalent polymer composite materials is one of the most significant opportunities in reducing vehicle weight. In addition to lightweight, the new requirements about the

restrictions on collision safety in vehicles are made more stringent by governments. Resistance to side collisions is one of the main requirements for crash-safe car bodies. When the collision occurs from the side of the car, even if the impact energy is low, the level of injury in the passengers is high. It is because of the low distance between the car body and the passenger, and consisting of the body structure, only a few side components that absorb collision energy. One of them is the B-pillar, which located between

the front and rear doors of the car. It is an essential component for the safety of passengers and drivers. The B-pillar designs to minimize inward deformation in the event of a collision, as well as to have a high load-bearing capacity and to absorb impact energy highly. In this study, B-pillar of a passenger car was designed as functionally graded using continuous fiber-reinforced thermoplastic composites.

The obtained design was validated by using Finite Element Analysis with the properties of continuous filament reinforced thermoplastic composite materials and compared with equivalent steel sheet B-pillar. The results show us by using continuous filament fiber reinforced thermoplastic composite materials and a functionally grading approach, the mass of the obtained B-pillar was less than 50% the  equivalent steel part, under the same performance.