Akademik Veri Yönetim Sistemi
6.International Anatolian Scientific Research Congress, Konya, Türkiye, 8 - 10 Kasım 2024, ss.185-186, (Özet Bildiri)
ABSTRACT
Introduction and Purpose: Nowadays, legal regulations aimed at improving fuel economy and reducing greenhouse gas emissions direct automobile manufacturers to produce lighter and/or higher-performance automobiles. The Corporate Average Fuel Economy (CAFE) standard requires all original equipment manufacturers (OEMs) operating in the automotive industry to achieve fuel economy targets determined based on the average weight of their fleet of passenger cars or light trucks. Fuel economy targets set for passenger vehicles are quite challenging for many countries and regions. In this context, increasing fuel economy, controlling greenhouse gas emissions and developing high-performance vehicles become the main focus, and within this scope, the production of lighter vehicles is of great importance. Original equipment manufacturers are adopting different strategies to save weight, such as researching lighter materials and developing electric vehicles. Among these strategies, development of lightweight and high-performance materials as an alternative to traditional automotive materials is a prominent method. However, considering its low cost, high performance and manufacturability, steel continues to be an indispensable automotive material today.
Materials and Methods: In this project, DD13 (low carbon hot rolled steel) and S420MC (low carbon hot rolled but high strength steel) were preferred for the spring-plate part, which is one of the parts of the automotive shock absorber system and ensures the fixation of the helical-spring. The parts were analyzed in the Auto-Form simulation program before production.
Results: As a result of the analysis, a tearing problem occurred when S420MC material was used instead of DD13 material, but this problem was eliminated by making a small-scope design change. Moreover, 24.69% weight saving was achieved by using 3 mm thick S420MC material instead of 4 mm thick DD13. Although there is no significant density difference between DD13 steel material and S420MC material, the fact that S420MC material has a much higher strength than DD13 material corresponds to a higher specific strength.
Key Words: Weight saving, shock absorber system, low carbon steel