| 葛宇静,白春玉,惠旭龙,舒挽.聚碳酸酯中低应变率范围下动态力学性能研究[J].装备环境工程,2018,15(9):66-70. GE Yu-jing,BAI Chun-yu,HUI Xu-long,SHU Wan.Dynamic Mechanical Property of Polycarbonate under Intermediate and Low Strain Rates[J].Equipment Environmental Engineering,2018,15(9):66-70. |
| 聚碳酸酯中低应变率范围下动态力学性能研究 |
| Dynamic Mechanical Property of Polycarbonate under Intermediate and Low Strain Rates |
| 投稿时间：2018-06-28 修订日期：2018-09-25 |
| DOI：10.7643/ issn.1672-9242.2018.09.013 |
| 中文关键词: 中低应变率 聚碳酸酯 动态力学性能 |
| 英文关键词:intermediate and low strain rates polycarbonate dynamic mechanical property |
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| Author | Institution |
| GE Yu-jing | Aviation Key Laboratory of Science and Technology on Structures Impact Dynamics, Aircraft Strength Research Institute of China, Xi'an 710065, China |
| BAI Chun-yu | Aviation Key Laboratory of Science and Technology on Structures Impact Dynamics, Aircraft Strength Research Institute of China, Xi'an 710065, China |
| HUI Xu-long | Aviation Key Laboratory of Science and Technology on Structures Impact Dynamics, Aircraft Strength Research Institute of China, Xi'an 710065, China |
| SHU Wan | Aviation Key Laboratory of Science and Technology on Structures Impact Dynamics, Aircraft Strength Research Institute of China, Xi'an 710065, China |
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| 中文摘要: |
| 目的 研究聚碳酸酯材料在一定温度下中低应变率范围内的力学性能。方法 利用高速液压伺服材料试验机和非接触测试分析系统，在不同温度（45~70 ℃）下对聚碳酸酯材料进行应变率范围（0.05 ~60 s1）的动态拉伸试验，获得各温度不同应变率下的真实应力-真实应变曲线。结果 聚碳酸酯材料的屈服强度和流动应力随着应变率的增加而增加，随着温度的增加而降低。结论 聚碳酸酯材料在此温度和应变率范围下具有明显的应变率强化效应和温度软化效应。 |
| 英文摘要: |
| Objective To study mechanical properties of polycarbonate under intermediate and low strain rates at certain temperature. Methods Dynamic tensile experiments of polycarbonate under strain rates ranged from 0.05/s to 60/s were developed with high velocity hydraulic servo-testing machine and non-contact measurement system between 45 and 70 ℃, and true stress-true strain curves under different strain rates and at each temperature were obtained. Results Yield strength and flow stress of polycarbonate increased with the increase of strain rate and decreased with the increase of temperature. Conclusion Polycarbonate has apparent strengthening effect of strain rate and softening effect of temperature within the temperature and strain rate range. |
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