| 基于虚温定义的粘弹性有限元方法 |
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| 引用本文： | 皇甫传杰,常新龙,赵海生,吴涛.基于虚温定义的粘弹性有限元方法[J].上海航天,2007,24(5):19-22. |
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| 作者姓名： | 皇甫传杰 常新龙 赵海生 吴涛 |
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| 作者单位： | 1. 第二炮兵工程学院,陕西,西安,710025
2. 第二炮兵装备研究院,北京,100085 |
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| 摘 要： | 基于NARAYANASWAMY提出的虚温定义,用虚温表示的温度变化产生的折算应变率替代Swanson模型中的应变率修正函数,获得了基于虚温定义的粘弹性材料的应力应变本构方程,并导出基于虚温定义的粘弹性非线性有限单元法计算公式。计算结果验证了此基于虚温定义的粘弹性分析方法的正确性。
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| 关 键 词： | 粘弹性材料 虚温 应力应变本构方程 非线性有限单元法 |
| 文章编号： | 1006-1630（2007）05-0019-04 |
| 收稿时间： | 2006-06-06 |
| 修稿时间： | 2006-11-14 |
Viscoelastic Finite Element Method Based on Definition of Fictive Temperature |
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| HUANGFU Chuan-jie,CHANG Xin-long,ZHAO Hai-sheng,WU Tao.Viscoelastic Finite Element Method Based on Definition of Fictive Temperature[J].Aerospace Shanghai,2007,24(5):19-22. |
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| Authors: | HUANGFU Chuan-jie CHANG Xin-long ZHAO Hai-sheng WU Tao |
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| Abstract: | The intrinsic stress and strain equation of viscoelastic material based on fictive temperature put forward by NARAYANASWAMY was gained in this paper,when the correction function of strain ratio in Swanson model was replaced by the obversion strain ratio presented by fictive temperature caused by temperature change.The computation formula of nonlinear finite element method for viscoelastic material was derived based on fictive temperature.The calculation results showed that this analysis method was correct. |
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| Keywords: | Viscoelastic material Fictive temperature Intrinsic stress and strain equation Nonlinear finite element method |
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