期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
巴托克的调性和声理论 被引量:9
1
作者 李正彧 《音乐探索》 2004年第1期48-53,共6页
巴托克的调性和声理论是巴托克作曲体系的又一重要理论。首先,它使巴托克音乐与20世纪的无调性音乐彻底划清了界限;其次,它在继承传统的基础上又有所创新。其调性理论是和声理论的根源,其和声理论又是调性理论的基础,而著名的“轴心理... 巴托克的调性和声理论是巴托克作曲体系的又一重要理论。首先,它使巴托克音乐与20世纪的无调性音乐彻底划清了界限;其次,它在继承传统的基础上又有所创新。其调性理论是和声理论的根源,其和声理论又是调性理论的基础,而著名的“轴心理论”便是二者在深层上的绝妙融合。 展开更多
关键词 巴托克 调性和声理论 作曲理论 “轴心理论” 和弦构成
下载PDF
Calculation on uniaxial compressive strength of high strength concrete after wrapped by FRP
2
作者 钱春香 陈世欣 +2 位作者 郑孝霞 过占其 皮埃特.斯居文 《Journal of Southeast University(English Edition)》 EI CAS 2004年第3期352-355,共4页
A theoretical calculation method of the axial compressive strength of a high strength concrete with fibre reinforced plastics (FRP) constraint is proposed. It is shown by test verification that the FRP strength devoti... A theoretical calculation method of the axial compressive strength of a high strength concrete with fibre reinforced plastics (FRP) constraint is proposed. It is shown by test verification that the FRP strength devotion factor used for this method is in accordance with actual conditions. FRP is not up to the ultimate strength when the concrete reaches the ultimate strength, whose strength devotion factor is in the range of 0.28 to 0.59, which is related to an elastic modulus. The method can be used to estimate axial compressive strength of the concrete strengthened with FRP. The theoretical strength is 10% to 30% higher than the measured one. The deviation comes mainly from a non-ideal bonding condition of FRP-concrete interfaces and discrete property of the testing data of compressive strength. 展开更多
关键词 CALCULATIONS Compressive strength Elastic moduli Fiber reinforced plastics Strength of materials
下载PDF
Stability and nonlinear dynamic behavior of drilling shaft system in copper stave deep hole drilling 被引量:2
3
作者 孔令飞 李言 +3 位作者 吕延军 李德信 李淑娟 汤奥斐 《Journal of Central South University》 SCIE EI CAS 2009年第3期451-457,共7页
The stability and nonlinear dynamic behavior of drilling shaft system in copper stave deep hole drilling were analyzed. The effects of the fluctuation of the cutting force, the mass eccentricity and the hydrodynamic f... The stability and nonlinear dynamic behavior of drilling shaft system in copper stave deep hole drilling were analyzed. The effects of the fluctuation of the cutting force, the mass eccentricity and the hydrodynamic forces of cutting fluid could be taken into consideration in the model of drilling shaft system. Based on the isoparametric finite element method, the variational form of Reynolds equation in hydrodynamic fluid was used to calculate nonlinear hydrodynamic forces and their Jacobian matrices simultaneously. In the stability analysis, a new shooting method for rapidly determining the periodic orbit of the nonlinear drilling shaft system and its period was presented by rebuilding the traditional shooting method and changing the time scale. Through the combination of theories with experiment, the correctness and effectiveness of the above methods are verified by using the Floquet theory. The results show that the mass eccentricity can inhibit the whirling motion of drilling shaft to some extent. 展开更多
关键词 copper stave deep hole drilling drilling shaft NONLINEARITY BIFURCATION
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部