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圆型腔零件粗铣削加工编程方法的探讨 被引量:1
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作者 冯志新 孟冬菊 《制造技术与机床》 CSCD 北大核心 2008年第11期98-101,共4页
为了提高加工效率,延长刀具寿命,改善工件表面质量,提出了一种新的加工方法——半圆渐进滚铣圆法,对该方法的工艺、编程、加工过程和特点进行了详细阐述,为圆型腔零件的数控铣削加工提供了新的参考。
关键词 型腔零件 数控编程 径向进刀扩圆法 渐进滚铣
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对祖冲之的密率推算方法的猜想
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作者 李胜成 《湖北工程学院学报》 2007年第S1期141-143,共3页
圆周率π自古以来一直是人们日常生活中的一个非常重要的常数,祖冲之是我国古代杰出的数学家,在圆周率的研究上为人类作出了不朽的贡献,求出了约率22/7和密率355/113,已非常精确。这一结果是如何推算的一直为人们所考究,笔者就此作些尝试。
关键词 周率 约率 密率 扩圆法
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New Exact Solutions to Dispersive Long-Wave Equations in (2+1)-Dimensional Space 被引量:2
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作者 TIAN Ying-Hui CHEN Han-Lin LIU Xi-Qiang 《Communications in Theoretical Physics》 SCIE CAS CSCD 2006年第2期207-210,共4页
New exact solutions expressed by the Jacobi elliptic functions are obtained to the (2+1)-dimensional dispersive long-wave equations by using the modified F-expansion method. In the limit case, new solitary wave sol... New exact solutions expressed by the Jacobi elliptic functions are obtained to the (2+1)-dimensional dispersive long-wave equations by using the modified F-expansion method. In the limit case, new solitary wave solutions and triangular periodic wave solutions are obtained as well. 展开更多
关键词 dispersive long-wave equations modified F-expansion method exact solutions Jacobi elliptic functions
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New Exact Solutions to Long-Short Wave Interaction Equations 被引量:1
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作者 TIAN Ying-Hui CHEN Han-Lin LIU Xi-Qiang 《Communications in Theoretical Physics》 SCIE CAS CSCD 2006年第3X期397-402,共6页
New exact solutions expressed by the Jacobi elliptic functions are obtained to the long-short wave interaction equations by using the modified F-expansion method. In the limit case, solitary wave solutions and triangu... New exact solutions expressed by the Jacobi elliptic functions are obtained to the long-short wave interaction equations by using the modified F-expansion method. In the limit case, solitary wave solutions and triangular periodic wave solutions are obtained as well. 展开更多
关键词 long-short wave interaction equations modified F-expansion method exact solutions Jacobi elliptic functions
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Extended Jacobi Elliptic Function Rational Expansion Method and Its Application to (2+1)-Dimensional Stochastic Dispersive Long Wave System
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作者 SONG Li-Na ZHANG Hong-Qing 《Communications in Theoretical Physics》 SCIE CAS CSCD 2007年第6期969-974,共6页
In this work, by means of a generalized method and symbolic computation, we extend the Jacobi elliptic function rational expansion method to uniformly construct a series of stochastic wave solutions for stochastic evo... In this work, by means of a generalized method and symbolic computation, we extend the Jacobi elliptic function rational expansion method to uniformly construct a series of stochastic wave solutions for stochastic evolution equations. To illustrate the effectiveness of our method, we take the (2+ 1)-dimensional stochastic dispersive long wave system as an example. We not only have obtained some known solutions, but also have constructed some new rational formal stochastic Jacobi elliptic function solutions. 展开更多
关键词 stochastic evolution equations (2+ 1)-dimensional stochastic dispersive long wave system rational formal stochastic Jacobi elliptic function solutions
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Further Extended Jacobi Elliptic Function Rational Expansion Method and New Families of Jacobi Elliptic Function Solutions to (2+1)-Dimensional Dispersive Long Wave Equation
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作者 ZHANG Yuan-Yuan WANG Qi ZHANG Hong-Qing 《Communications in Theoretical Physics》 SCIE CAS CSCD 2006年第2期199-206,共8页
In this paper, a further extended Jacobi elliptic function rationM expansion method is proposed for constructing new forms of exact solutions to nonlinear partial differential equations by making a more general transf... In this paper, a further extended Jacobi elliptic function rationM expansion method is proposed for constructing new forms of exact solutions to nonlinear partial differential equations by making a more general transformation. For illustration, we apply the method to (2+1)-dimensionM dispersive long wave equation and successfully obtain many new doubly periodic solutions. When the modulus m→1, these sohitions degenerate as soliton solutions. The method can be also applied to other nonlinear partial differential equations. 展开更多
关键词 doubly periodic solution soliton solution (2+1)-dimensional dispersive long wave equation
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New Extended Jacobi Elliptic Function Rational Expansion Method and Its Application
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作者 ZHENG Ying ZHANG Yuan-Yuan ZHANG Hong-Qing 《Communications in Theoretical Physics》 SCIE CAS CSCD 2006年第1X期5-9,共5页
In this paper, an extended Jacobi elliptic function rational expansion method is proposed for constructing new forms of exact Jacobi elliptic function solutions to nonlinear partial differential equations by means of ... In this paper, an extended Jacobi elliptic function rational expansion method is proposed for constructing new forms of exact Jacobi elliptic function solutions to nonlinear partial differential equations by means of making a more general transformation. For illustration, we apply the method to the (2+1)-dimensional dispersive long wave equation and successfully obtain many new doubly periodic solutions, which degenerate as soliton solutions when the modulus m approximates 1. The method can also be applied to other nonlinear partial differential equations. 展开更多
关键词 extended Jacobi elliptic function rational expansion method rational formal Jacobi elliptic function solution (2+1)-dimensional dispersive long wave equation
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