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一类耦合KdV型方程的周期波解、孤波解及它们随Hamilton能量的演变关系
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作者 张卫国 张雪 姚倩 《理论数学》 2023年第4期1090-1121,共32页
本文研究了一类非线性耦合KdV型波动方程的精确孤波解、周期波解以及它们随Hamilton能量的演变关系。文中利用平面动力系统的方法对该方程进行了详细的定性分析,通过首次积分法求出了该方程的3种孤波解,其中对有界有理函数波解和扭状孤... 本文研究了一类非线性耦合KdV型波动方程的精确孤波解、周期波解以及它们随Hamilton能量的演变关系。文中利用平面动力系统的方法对该方程进行了详细的定性分析,通过首次积分法求出了该方程的3种孤波解,其中对有界有理函数波解和扭状孤波解的求解是创新性的解。求出了该方程的7种雅可比椭圆函数周期波解,尤其是利用恰当变换求出了非对称同宿轨所围的闭轨对应的新周期波解,以及包围同宿轨的闭轨对应的新周期波解。文中将所求的孤波解和周期波解与Hamilton能量对应起来,并发现了所研方程为什么能产生孤波解和周期波解,实际上是该方程解的振幅对应的Hamilton系统的能量变化起着关键的作用。 展开更多
关键词 方程的精确 平面动力系统方法 精确 精确周期波解 演变关系
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一类Duffing方程的新显式精确解
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作者 刘刚 张卫国 杨桂考 《上海理工大学学报》 CAS 北大核心 2010年第4期315-317,共3页
利用假设待定法和Maple计算软件,求出了广义Duffing方程的Jacobi椭圆函数分式形式精确周期波解,进而得到在特殊物理意义下Duffing方程的周期波解,并分析了解的性状,作出了解的波形图.
关键词 软弹簧型Duffing方程 精确周期波解 Jacobi椭圆函数.
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Two Classes of New Exact Solutions to (2+1)-Dimensional Breaking Soliton Equation 被引量:2
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作者 PENG Yan-Ze E.V. Krishnan 《Communications in Theoretical Physics》 SCIE CAS CSCD 2005年第5X期807-809,共3页
The singular manifold method is used to obtain two general solutions to a (2+1)-dimensional breaking soliton equation, each of which contains two arbitrary functions. Then the new periodic wave solutions in terms of t... The singular manifold method is used to obtain two general solutions to a (2+1)-dimensional breaking soliton equation, each of which contains two arbitrary functions. Then the new periodic wave solutions in terms of the Jacobi elliptic functions are generated from the general solutions. The long wave limit yields the new types of dromion and solitary structures. 展开更多
关键词 (2+1)-dimensional breaking soliton equation exact solutions singular manitold method
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Possible Linear Superpositions for Special Solutions of the Fifth-Order KdV-Type Equations 被引量:1
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作者 WENGJian-Ping 《Communications in Theoretical Physics》 SCIE CAS CSCD 2005年第3期479-482,共4页
Using Lou and Ni's deformation and mapping idea in nonlinear equations to a set of fifth order KdV type equations, it is found that some types of solitary wave solutions and periodic solutions with special velocit... Using Lou and Ni's deformation and mapping idea in nonlinear equations to a set of fifth order KdV type equations, it is found that some types of solitary wave solutions and periodic solutions with special velocities can be linearly superposed to new exact solutions. 展开更多
关键词 deforming method SUPERPOSITION nonlinear equation
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New Types of Exact Solutions for (N+1)-Dimensional φ^4 Model 被引量:1
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作者 JIA Man LOU Sen-Yue 《Communications in Theoretical Physics》 SCIE CAS CSCD 2006年第1X期91-96,共6页
New types of exact solutions of the (N + 1)-dimensional φ^4-model are studied in detail. Some types of interaction solutions such as the periodic-periodic interaction waves and the periodic-solitary wave interacti... New types of exact solutions of the (N + 1)-dimensional φ^4-model are studied in detail. Some types of interaction solutions such as the periodic-periodic interaction waves and the periodic-solitary wave interaction solutions are found. 展开更多
关键词 φ^4-model periodic-periodic interaction waves
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A Series of Exact Solutions for a New (2+1)-Dimensional Calogero KdV Equation
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作者 BIAN Xue-Jun 《Communications in Theoretical Physics》 SCIE CAS CSCD 2005年第5X期815-820,共6页
An algebraic method is proposed to solve a new (2+1)-dimensional Calogero KdV equation and explicitly construct a series of exact solutions including rational solutions, triangular solutions, exponential solution, lin... An algebraic method is proposed to solve a new (2+1)-dimensional Calogero KdV equation and explicitly construct a series of exact solutions including rational solutions, triangular solutions, exponential solution, line soliton solutions, and doubly periodic wave solutions. 展开更多
关键词 (2+1)-dimensional Calogero KdV equation exact solutions algebraic method computerized symbolic computation
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New Families of Exact Solutions for (2+1)-Dimensional Broer-Kaup System
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作者 ZHAOHong BAICheng-Lin HANJi-Guang 《Communications in Theoretical Physics》 SCIE CAS CSCD 2005年第2期251-256,共6页
Using a further modified extended tanh-function method, rich new families of the exact solutions for the (2+ 1)-dimensional Broer-Kaup (BK) system, comprising the non-traveling wave and coefficient functions' soli... Using a further modified extended tanh-function method, rich new families of the exact solutions for the (2+ 1)-dimensional Broer-Kaup (BK) system, comprising the non-traveling wave and coefficient functions' soliton-like solutions, singular soliton-like solutions, periodic form solutions, are obtained. 展开更多
关键词 further modified extended tanh-function method (2+1)-dimensional Broer-Kaup(BK) system soliton-like solutions periodic form solution
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New Exact Solutions of the N-Coupled Nonlinear Schroedinger System
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作者 SHEN Shou-Feng ZHANG Jun +1 位作者 YE Cai-Er PAN Zu-Liang 《Communications in Theoretical Physics》 SCIE CAS CSCD 2005年第4X期604-608,共5页
In this letter, abundant families of Jacobi elliptic function envelope solutions of the N-coupled nonlinear Schroedinger (NLS) system are obtained directly. When the modulus m → 1, those periodic solutions degenera... In this letter, abundant families of Jacobi elliptic function envelope solutions of the N-coupled nonlinear Schroedinger (NLS) system are obtained directly. When the modulus m → 1, those periodic solutions degenerate as the corresponding envelope soliton solutions, envelope shock wave solutions. Especially, for the 3-coupled NLS system, five types of Jacobi elliptic function envelope solutions are illustrated both analytically and graphically. Two types of those degenerate as envelope soliton solutions. 展开更多
关键词 nonlinear Schroedinger system exact solution Jacobi elliptic function soliton
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