| 注塑制品内应力计算的非线性黏弹性本构方程 |
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| 引用本文： | 申长雨,吴海宏,赵振峰.注塑制品内应力计算的非线性黏弹性本构方程[J].化工学报,2007,58(2):490-494. |
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| 作者姓名： | 申长雨 吴海宏 赵振峰 |
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| 作者单位： | 河南工业大学机电工程学院 |
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| 摘 要： | 在聚合物黏弹性理论的基础上，构建了新的注塑制品内应力计算的四元件串联力学模型，并推导了其瞬态黏弹性响应的非线性本构方程，给出了聚合物材料参数弹性模量和黏壶系数的计算公式，并对PS平板注塑制件脱模前的内应力进行了模拟计算。计算结果与固体高聚物的结构和力学性能的相关研究结论相一致，所建计算模型合理可靠。
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| 关 键 词： | 本构方程 非线性黏弹性 内应力 注塑 注塑制品 应力计算 非线性 黏弹性 本构方程 injection internal stress calculate constitutive equation 计算模型 研究 相关 力学性能 结构 固体高聚物 结果 模拟计算 内应力 脱模 注塑制件 |
| 文章编号： | 0438-1157（2007）02-0490-05 |
| 收稿时间： | 2005-12-31 |
| 修稿时间： | 2005-12-312006-04-06 |
Non-linear viscoelastic constitutive equation to calculate internal stress of injection molded articles |
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| SHEN Changyu,WU Haihong,ZHAO Zhenfeng.Non-linear viscoelastic constitutive equation to calculate internal stress of injection molded articles[J].Journal of Chemical Industry and Engineering(China),2007,58(2):490-494. |
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| Authors: | SHEN Changyu WU Haihong ZHAO Zhenfeng |
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| Affiliation: | National Engineering Research Center for Advanced Polymer Processes Technology, Zhengzhou University, Zhengzhou 450003, Henan, China |
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| Abstract: | Based on the viscoelastic theory of solidified polymer, a new four-element mechanical model in series was proposed and its non-linear constitutive equation was derived to calculate internal stress of injection molded articles. The equation illustrates, the instantaneous viscoelastic behavior of polymer and its effect on internal stress state of the product in the cooling process. The equations for calculating elastic modulus and viscosity of polymers were given. The internal stress of an injection molded polystyrene plate was simulated by means of the new model. The results are in good agreement with published researching conclusions about the structure and mechanical properties of polymers, which show that the model is accurate and feasible. |
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| Keywords: | constitutive equation non-linear viscoelasticity internal stress injection |
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