| 导线覆冰脱冰有限元模拟方法的适用性分析 |
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| 引用本文： | 沈国辉,徐晓斌,楼文娟,孙炳楠. 导线覆冰脱冰有限元模拟方法的适用性分析[J]. 工程力学, 2011, 0(10) |
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| 作者姓名： | 沈国辉 徐晓斌 楼文娟 孙炳楠 |
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| 作者单位： | 浙江大学土木工程学系;浙江大学宁波理工学院; |
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| 基金项目： | 国家自然科学基金项目(50638010); 浙江省自然基金项目(Y1080207) |
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| 摘 要： | 针对导线覆冰脱冰有限元分析中的附加冰单元法和改变密度法,采用相同算例进行方法的适用性分析,澄清以往学者在分析时冰参数选择的不合理之处,并提出计算时冰力学参数的合理建议值。研究表明:在应用附加冰单元法进行导线覆冰脱冰计算时,以往学者取10GPa作为冰弹性模量的取值是不合理的,根据算例结果,建议冰的弹性模量取不超过107Pa。当冰参数合理取值后的附加冰单元法与改变密度法具有等价性,均适用于导线覆冰脱冰的有限元分析。
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| 关 键 词： | 输电导线 有限元 覆冰 脱冰 模拟方法 |
APPLICABILITY ANALYSIS OF FINITE ELEMENT METHODOLOGIES TO SIMULATE THE ICE-ACCRETING AND ICE-SHEDDING ON TRANSMISSION LINES |
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| SHEN Guo-hui,XU Xiao-bin,LOU Wen-juan,SUN Bing-nan. APPLICABILITY ANALYSIS OF FINITE ELEMENT METHODOLOGIES TO SIMULATE THE ICE-ACCRETING AND ICE-SHEDDING ON TRANSMISSION LINES[J]. Engineering Mechanics, 2011, 0(10) |
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| Authors: | SHEN Guo-hui XU Xiao-bin LOU Wen-juan SUN Bing-nan |
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| Affiliation: | SHEN Guo-hui1,XU Xiao-bin1,LOU Wen-juan1,SUN Bing-nan1,2(1.Department of Civil Engineering,Zhejiang University,Hangzhou 310058,China,2.Ningbo Institute of Technology,Ningbo 315100,China) |
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| Abstract: | An adjunctive ice element methodology and a density changing methodology used to analyze the ice-accreting and ice-shedding on transmission lines are investigated.The applicability analysis of the two methodologies is carried out based on an identical example.The mechanical parameters of ice used in the two methodologies are clarified and the appropriate values of ice parameters are suggested.The results from this study show that it is inappropriate for some researchers to use 10GPa as the elastic modulus o... |
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| Keywords: | transmission line finite element method ice-accreting ice-shedding simulation method |
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