研究了一个广义非线性Boussinesq方程.利用同伦映射方法,首先构造了相应的同伦变换;其次选取了适当的初始近似;然后用同伦映射方法得到了孤立子波近似解;最后得到了微扰渐近表示式.
The generalized nonlinear Boussinesq equation is studied. Using the homotopic mapping perturbation method, firstly, the corresponding homotopic mapping transform is constructed ; secondly, the suitable initial approximation is selected; and then by using the homotopic mapping, the approximate solution for the solitary wave is obtained. Finally, the small perturbation asymptotic expansions are obtained.