Prediction of failure properties of injection-molded short glass fiber-reinforced polyamide 6,6 |
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| Affiliation: | 1. Department of Aerospace Engineering, Tohoku University, 6-6-01, Aoba-yama, Aoba-ku, Sendai, Miyagi 980-8579, Japan;2. Department of Nanomechanics, Tohoku University, 6-6-01, Aoba-yama, Aoba-ku, Sendai, Miyagi 980-8579, Japan;3. Department of Mechanical Engineering and Science, Kyoto University, C3, Kyoto Daigaku-Katsura, Nishikyo-ku, Kyoto 615-8540, Japan;1. Jönköping University, Gjuterigatan 5, P.O. Box 1026, SE-551 11 Jönköping, Sweden;2. Kongsberg Automotive AB, Fabriksgatan 3-4, SE-565 28 Mullsjö, Sweden;3. Husqvarna AB, Drottninggatan 2, SE-561 82 Huskvarna, Sweden;1. CanmetMATERIALS, Natural Resources Canada, 175 Longwood Road South, Hamilton, Ontario L8P 0A1, Canada;2. Department of Materials Science and Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada;3. National Key Laboratory of Science & Technology on UAV, Northwestern Polytechnical University, 127 Youyi West Rd, Xi’an 710072, China;4. Research and Innovation Centre, Ford Motor Company, 2101 Village Road, Dearborn, Michigan 48124, USA |
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| Abstract: | This study simulates the tensile failure of injection-molded short glass fiber-reinforced polyamide 6,6 (GF/PA66). Tensile tests of unreinforced PA66 are first conducted and the material properties are obtained by fitting a simulated stress–strain curve to the experiment result. Using the obtained material properties, failure simulations of GF/PA66 composites are performed for four types of specimens with various fiber lengths and fiber orientation distributions. In the simulations, multiscale mechanistic model, which can simulate micromechanical damage, and Micromechanics Model (MM), which has very low computational cost, are adapted and the results are compared with experiments. Both models reproduce the experiment results well. Considering the computational cost, MM is the better model for predicting the failure properties of GF/PA66 composites. |
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| Keywords: | A Polymer–matrix composites (PMCs) A Discontinuous reinforcement B Fracture C Micro-mechanics |
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