Design and Manufacture of Automotive Hybrid Steel/Carbon Fiber Composite B-Pillar Component with High Crashworthiness
- PDF / 3,745,402 Bytes
- 13 Pages / 595.276 x 790.866 pts Page_size
- 10 Downloads / 228 Views
Online ISSN 2198-0810 Print ISSN 2288-6206
REGULAR PAPER
Design and Manufacture of Automotive Hybrid Steel/Carbon Fiber Composite B‑Pillar Component with High Crashworthiness Dug‑Joong Kim1 · Jaeyoung Lim2 · Byeunggun Nam2 · Hee‑June Kim3 · Hak‑Sung Kim1,4 Received: 11 July 2019 / Revised: 28 November 2019 / Accepted: 2 January 2020 © Korean Society for Precision Engineering 2020
Abstract A composite B-pillar was designed and manufactured by design optimization combined with an impact analysis. A carbonfiber-reinforced plastic (CFRP) was used for the reinforcement part of the B-pillar assembly to substitute the conventional steel materials for reducing the weight of vehicle. To maximize the impact performance by finite element method, the equivalent static loads method was used. The shape, stacking sequence, and thickness of the CFRP reinforcement were optimized to minimize the deflection profile for improving the crashworthiness while reducing the weight. The designed CFRP B-pillar was manufactured and its performance was evaluated by a drop weight test. As a result, the CFRP B-pillar exhibited an improved impact performance and reduced weight compared to those of the conventional steel B-pillar. Keywords Carbon fibre · Structural composites · Impact behavior · Finite element analysis (FEA) · Resin transfer moulding (RTM)
1 Introduction In the current automotive industries, weight reduction of vehicle has been important issue because of the strengthening regulations on gas emission and the demand for high fuel efficiency [1–3]. As both weight reduction and crashworthiness can be achieved by fiber-reinforced composites, composite materials, particularly carbon-fiber-reinforced plastics (CFRPs), have been widely employed for various automotive components such as hood, bumper beam, and roof, substituting conventional metals [4–7]. Simultaneously, the restrictions on crash safety have become more stringent [8–10]. Crashworthiness on side impact is one of the main requirements for crashworthy * Hak‑Sung Kim [email protected] 1
Department of Mechanical Engineering, Hanyang University, 17 Haengdang‑Dong, Seongdong‑Gu, Seoul 133–791, South Korea
2
Hyundai Motor Group R&D Division, Gyeonggi‑do, Seoul 445–709, South Korea
3
Automotive Materials Laboratory, LG Hausys, 30, Magokjungang 10‑ro, Gangseo‑gu, Seoul, Republic of Korea
4
Institute of Nano Science and Technology, Hanyang University, Seoul 133‑791, South Korea
automotive structures [11–13]. When the crash occurs at the side of the automotive, the injury level of passengers is significant even when the crash energy is low. This caused from the fact that the distance between the automotive frame and passenger is too close, and there are only a few side components absorbing crash energy. In a side crash, the B-pillar, located between the front and rear doors of the automotive, is the most important component in the occupant protection. The B-pillar has been designed to be less penetrated in a crash situation, while efficiently absorbing the impact
Data Loading...
