Affiliation:
1. State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, College of Mechanical and Vehicle Engineering, Hunan University, Changsha, China
2. College of Civil Engineering, Hunan University, Changsha, China
3. College of Materials Science and Engineering, Hunan University, Changsha, China
Abstract
This study investigated the warpage of injection-molded automotive interior component (B pillar trim) fabricated with four types of short ramie fiber (RF) reinforced polypropylene (PP) composites with different fiber percentages, namely, 0RF/PP, 10RF/PP, 20RF/PP, and 30RF/PP. The effects of injection-molding process parameters and the fiber addition on the warpage of the component were investigated through numerical simulation using orthogonal experiment method. The results showed that packing pressure and filling time were the most important factors affecting warpage. And the minimal warpage values of the components made of 0RF/PP, 10RF/PP, 20RF/PP, and 30RF/PP were of 3.632, 3.698, 4.070, and 3.798 mm, respectively, at their own specific optimized process parameters. Additionally, fiber addition also plays an important role on the warping deformation of the component. The warpage increased first and then decreased with the increase of fiber addition, and an inflection point occurred at 20 wt% fiber addition. This is because the fiber orientation can promote the warping deformation, while the increase of composite’s modulus due to the fiber addition can hinder the warping deformation.
Subject
Materials Chemistry,Polymers and Plastics,Mechanical Engineering,Mechanics of Materials,Ceramics and Composites
Cited by
14 articles.
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