排序方式： 共有15条查询结果，搜索用时 46 毫秒
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SUNG Wen-pei GO Cheer-germ SHIH Ming-hsiang 《浙江大学学报(A卷英文版)》2007,8(9):1373-1379
The characteristic properties of shell element with similar shapes are used to generate a so-called super element for the analysis of the crack problems for cylindrical pressure vessels. The formulation is processed by matrix condensation without the involvement of special treatment. This method can deal with various singularity problems and it also presents excellent results to crack problems for cylindrical shell. Especially,the knowledge of the kind of singular order is not necessary in super element generation; it is very economical in terms of computer memory and programming. This method also exhibits versatility to solve the problem of kinked crack at cylindrical shell. 相似文献
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Investigation of newly developed added damping and stiffness device with low yield strength steel 总被引：2，自引：0，他引：2
INTRODUCTIONThisresearchfocusedonusingthemechanicalpropertiesoflowyieldstrengthsteel(LYS)tode-velopanewdeviceforaddeddampingandstiffnessandseismicresistanceofrhombiclowyieldstrengthsteelplate.ThemechanicalpropertiesofLYSandtheeffectofthisnewlydevelopeddevicewereinvestigatedbyexperimentalmethod.Ex-pectedly,thisnewdevicecantakeadvantageofplasticenergyabsorbabilitytoabsorbanddissipatetheenergyofearthquakestablyandensurethesafetyofthemainstructure.Ananalyticalmodelisproposedforanalyzingtheh… 相似文献
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倾销与反倾销 ,补贴与反补贴已成为当前国际贸易中的突出问题。由于某些国家的“合法”滥用 ,导致发展中国家深受其害。因此 ,包括中国在内的发展中国家要正确认识和正确适用反倾销与反补贴 ,尽量避免遭受他国的指责和投诉 ,力争在国际贸易自由化浪潮中最大限度的维护好本国的经济权益 相似文献
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Energy dissipators, isolated-resistant and specific structural forms for earthquake resistance are popular topics in the research
to improve shock-resistance. In this work, experimental methods were used to investigate the property of low yield strength
steel. Carbon content in LYS material is lower than that in other steels; the ultimate stress is three times the yield stress.
The ultimate elongation rate is about 62% and the ductility is 2–3 times that of A36 steel. In order to overcome some defects
of ordinary use metallic dampers, the mechanical characteristic of low yield strength steel is used to develop added damping
and stiffness for rhombic steel plate absorber. Test of the energy dissipation behavior for this newly developed device indicated
that LYS could stably dissipate or absorb the input energy of earthquake. Then, the analytical model for the hysteretic behavior
of this new device is proposed. Comparison of experimental data and numerical simulation results showed that this analytical
model is suitable for simulating the hysteretic energy behavior of this new device. 相似文献
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The Meaning of a Teacher Education Reform: National story-telling and global trends in Sweden 总被引：1，自引：1，他引：0
GO¨RAN LINDE 《欧洲师范教育杂志》2003,26(1):109-122
A recent reform in Sweden's teacher education is presented. It is a liberal reform. The Government abstains from intervention in curriculum other than what are in the general regulations of Higher Education and in a Degree Ordinance for Teacher Education. In the Ordinance there are stated eight general goals and a basic framework for three areas of education, and how many credit points the students have to acquire in each of them. The reform is explained by the historical background of Sweden's teacher education development, from the special features of mentality formation of liberal minds in pluralistic societies and from the world-wide restructuring movement that implies less direct government intervention in public sector activities. 相似文献
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郭艳 《四川职业技术学院学报》2006,16(3):32-34
导游词是一种特殊的文体,其英语译文既要求书面上的准确无误,又要求用于导游的口头讲解时,游客能做出恰当的反应,导游和游客之间达到互动,从而实现双方言语交际的目标。本文运用格莱斯的会话合作原则,分别从数量准则,质量准则,关联准则,方式准则四个方面,对导游词的英语翻译进行分析并提出了作者的见解。 相似文献
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SUNGWen-pei LINCheng-I SHIHMing-hsiang GOCheer-germ 《浙江大学学报(A卷英文版)》2005,6(2):132-140
In view of the recent technological development, the pursuit of safe high-precision structural designs has been the goal of most structural designers. To bridge the gap between the construction theories and the actual construction techniques, safety factors are adopted for designing the strength loading of structural members. If safety factors are too conservative, the extra building materials necessary will result in high construction cost. Thus, there has been a tendency in the construction field to derive a precise buckling load analysis model of member in order to establish accurate safety factors. A numerical analysis model, using modal analysis to acquire the dynamic function calculated by dynamic parameter to get the buckling load of member, is proposed in this paper. The fixed and simple supports around the circular plate are analyzed by this proposed method. And then, the Monte Carlo method and the normal distribution method are used for random sampling and measuring errors of numerical simulati 相似文献
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古远清 《涪陵师范学院学报》2008,24(6)
"蓝星"诗社近乎精英们沙龙式的雅集。他们的结合,系对"现代诗社""横的移植"的一个"反动"。他们的作品以抒情为主,奉行的是温柔敦厚的抒情路线,对不可一世的纪弦具有制衡作用。"蓝星"早期由覃子豪掌舵,余光中为该社的精神领袖(余光中另文论述),支撑局面的主要有蓉子、罗门、周梦蝶等一大堆诗翁、诗媪。 相似文献
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利用顶空固相微萃取技术（SPME）吸附樟树叶的挥发性物质,采用GC／MS技术分析鉴定,用峰面积归一化法进行定量。从樟树叶中鉴定出38种化学物质,占挥发性物质总量的98．53％。樟树叶的主要挥发性物质有石竹烯,（Z,Z,Z）-1,5,9,9-四甲基-1,4,7环-十一碳三烯,己酸叶醇酯,S-（Z）-3,7,11-三甲基-1,6,10-十二烷三烯-3-醇,3,7-二氢-3-甲基1H-嘌呤-2,6-二酮等。 相似文献