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大跨径斜拉桥钢锚箱有限元分析的子模型技术法 被引量:4
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作者 吕彭民 李燕 《筑路机械与施工机械化》 2012年第12期89-92,共4页
以国内某大跨径斜拉桥为例,通过有限元软件ANSYS采用子模型技术法、等效板厚法及非线性接触法对大跨径斜拉桥索梁锚固区应力分布进行分析。结果表明,相比于传统的等效板厚法及非线性接触法,子模型技术法计算更精细、准确,是研究大跨径... 以国内某大跨径斜拉桥为例,通过有限元软件ANSYS采用子模型技术法、等效板厚法及非线性接触法对大跨径斜拉桥索梁锚固区应力分布进行分析。结果表明,相比于传统的等效板厚法及非线性接触法,子模型技术法计算更精细、准确,是研究大跨径斜拉桥索梁锚固区应力分布的最有效方法。 展开更多
关键词 大跨径斜拉桥 应力分布 ANSYS 子模型技术法
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Challenges and perspectives of combustion chemistry research 被引量:1
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作者 Wenhao Yuan Yuyang Li Fei Qi 《Science China Chemistry》 SCIE EI CAS CSCD 2017年第11期1391-1401,共11页
In the past decades, combustion chemistry research grew rapidly due to the development of combustion diagnostic methods,quantum chemistry methods, kinetic theory, and computational techniques. A lot of kinetic models ... In the past decades, combustion chemistry research grew rapidly due to the development of combustion diagnostic methods,quantum chemistry methods, kinetic theory, and computational techniques. A lot of kinetic models have been developed for fuels from hydrogen to transportation fuel surrogates. Besides, multi-scale research method has been widely adopted to develop comprehensive models, which are expected to cover combustion conditions in real combustion devices. However, critical gaps still remain between the laboratory research and real engine application due to the insufficient research work on high pressure and low temperature combustion chemistry. Besides, there is also a great need of predictive pollutant formation model. Further development of combustion chemistry research depends on a closer interaction of combustion diagnostics, theoretical calculation and kinetic model development. This paper summarizes the recent progress in combustion chemistry research briefly and outlines the challenges and perspectives. 展开更多
关键词 combustion chemistry combustion diagnostics validation experiments quantum chemistry calculation rate constant calculation kinetic model
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