短切碳纤维乙烯基酯树脂片状模塑料拉伸性能分析.pdf

哈尔滨工业大学工学硕士学位论文 Abstract With the gradual improvement of peoples requirements on the quality of automobiles, the addition of various types of additional devices has led to an increase in the weight of automobiles, which has brought about a series of problems such as fuel consumption and pollution. Therefore, lightweight has become the main target and driving force for the development of the automobile industry in the future. With the advent of the new material era, the limitations of traditional single-phase materials have limited their application space. On the other hand, composite materials with excellent performance and wide application are rapidly developing. The carbon fiber-reinforced composite materials known for their lightweight, high strength and excellent performance have also become the focus of current research. Sheet-type molding compound (SMC) is a composite material in which a short-cut fiber or a mat-reinforced thermosetting resin- reinforced sheet is placed in a hot mold for press molding. The degree of automation is high, and a complex-shaped member can be molded at one time. The surface of the products is bright and clean, so it has a broad application prospect in the field of automotive lightweight. With the gradual industrialization of carbon fiber, the cost of producing carbon fiber is reduced. Carbon fiber reinforced lightweight materials are widely used in the transportation industry, and short-cut carbon fiber reinforced vinyl ester resin sheet molding compound (CF-SMC) is rarely researched. In this paper, the tensile properties of CF-SMC composites were analyzed by finite element analysis and experiments, in order to provide theoretical support for the application of CF-SMC composites in automotive lightwe