| 引用本文: | 侯珍秀,李玉梅,张楠,于婷婷,王仲仁.聚碳酸酯板材中、低温本构模型的建立[J].哈尔滨工业大学学报,2013,45(11):38.DOI:10.11918/j.issn.0367-6234.2013.11.007 |
| HOU Zhenxiu,LI Yumei,ZHANG Nan,YU Tingting,WANG Zhongren
.The establishment of the constitutive equation of polycarbonate at low and medium temperature[J].Journal of Harbin Institute of Technology,2013,45(11):38.DOI:10.11918/j.issn.0367-6234.2013.11.007 |
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| 摘要: |
| 通过拉伸实验及参数辨识建立了聚碳酸酯中低温DSGZ本构方程(-50 ℃～60 ℃), 研究了聚碳酸酯板材在不同温度(-50、-20、0、20、60 ℃)及应变率(0.000 6、0.006、0.06、0.12 s-1)下的力学性能．研究结果表明:普通DSGZ模型无法确切描述聚碳酸酯应变软化行为．在此基础上,引入了修正的DSGZ模型, 结果表明: 修正DSGZ模型可更加有效地描述聚碳酸酯板材中、低温的力学行为． |
| 关键词: 聚碳酸酯板材 中温 低温 本构方程 拉伸试验 |
| DOI：10.11918/j.issn.0367-6234.2013.11.007 |
| 分类号: |
| 基金项目:国家自然科学基金资助项目(50675044);黑龙江省自然科学基金资助项目(ZD200811). |
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| The establishment of the constitutive equation of polycarbonate at low and medium temperature |
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HOU Zhenxiu, LI Yumei, ZHANG Nan, YU Tingting, WANG Zhongren
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(School of Mechanical Engineering, Harbin Institute of Technology, 150001 Harbin, China)
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| Abstract: |
| This paper studied the deformation behavior of Polycarbonate (PC) sheet at temperature of -50,-20, 0,0, 60 ℃ and strain rate of 0.6,0.6,0.6,0.12 s-1, respectively. Based on tensile tests and parameter identification, a modified DSGZ constitution model was developed to describe PC mechanical properties at the temperature from -50 ℃ to 60 ℃, and the results show that the model can give much better description of PC mechanical deformation at low and medium temperature. |
| Key words: polycarbonate sheet low and medium temperature constitutive model tensile tes
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