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Ti对建筑隔板镁合金挤压态组织和性能的影响
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作者 任燕娟 董强力 《热加工工艺》 北大核心 2021年第17期107-109,共3页
对建筑隔板用镁合金试样进行了挤压成形,研究了添加和不添加Ti元素对建筑隔板用镁合金试样的影响,并进行了显微组织、力学性能和耐腐蚀性能的测试、对比和分析。结果表明:与未添加元素Ti的Mg-3Al-1Zn合金相比,Mg-3Al-1Zn-0.8Ti合金的晶... 对建筑隔板用镁合金试样进行了挤压成形,研究了添加和不添加Ti元素对建筑隔板用镁合金试样的影响,并进行了显微组织、力学性能和耐腐蚀性能的测试、对比和分析。结果表明:与未添加元素Ti的Mg-3Al-1Zn合金相比,Mg-3Al-1Zn-0.8Ti合金的晶粒细化,抗拉强度和屈服强度分别增大14、37 MPa,质量损失率减小了37.15%,力学性能和耐腐蚀性能得到提升。Ti元素的添加有益于建筑隔板用Mg-3Al-1Zn镁合金综合性能的提升。 展开更多
关键词 建筑隔板 Mg-3Al-1Zn-0.8Ti合金 挤压成形 力学性能 耐腐蚀性能
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Design and research of gymnasium structure in Zhejiang University 被引量:1
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作者 吴开成 庄一舟 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 SCIE EI CAS CSCD 2005年第3期237-242,共6页
This paper deals with the issues involved during the design of a complex gymnasium located at the new campus of Zhejiang University. The complexity comes from the gymnasium’s being of three parts: long-span membrane ... This paper deals with the issues involved during the design of a complex gymnasium located at the new campus of Zhejiang University. The complexity comes from the gymnasium’s being of three parts: long-span membrane structure, prestressed concrete structure and extraordinarily long tubular steel structure without seams. The paper first presents considera- tions of the prestress design, followed by analyses of the stress states due to temperature changes and concrete shrinkage. Buckling and postbuckling analyses were performed to determine the load-carrying capacity of the perfect and imperfect tubular steel structure of the inclined arch system, while dynamic relaxation method and general nonlinear finite element analysis were used to carry out shape-finding and stress analyses of the membrane structure respectively. Finally, collated monitoring date was applied to control the construction quality and verify the design parameters. Some useful conclusions are available at the end of the paper. 展开更多
关键词 Prestress structure Membrane structure Tubular structure Extraordinarily long seamless structure Temperature shrinkage Stability
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槟榔·假槟榔·桄榔 被引量:1
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作者 黄立新 《中国林业》 1996年第8期41-41,共1页
槟榔·假槟榔·桄榔黄立新槟榔为棕榈科常绿乔木,高达17米,是热带地区重要的经济、药材树种。它原产于马来西亚。我国主要栽培区在两广南部、海南和云南南部、台湾等热带地区,果可食用,种子称“槟榔子”,主要成分为槟榔... 槟榔·假槟榔·桄榔黄立新槟榔为棕榈科常绿乔木,高达17米,是热带地区重要的经济、药材树种。它原产于马来西亚。我国主要栽培区在两广南部、海南和云南南部、台湾等热带地区,果可食用,种子称“槟榔子”,主要成分为槟榔碱,其次为槟榔次碱、鞣酸、槟榔红等。中医学... 展开更多
关键词 假槟榔 槟榔果 桄榔粉 热带地区 棕榈科 主要栽培区 建筑隔板 槟榔碱 槟榔次碱 糖椰子
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