
Lower dimensional approximation of eigenvalue problem for thin piezoelectric
We first consider thin piezoelectric shallow shells with variable thickness and show that the eigenvalues of the three dimensional problem are order
Approximations of fluid flow problems:
The mathematical model of fluid flow problems consists of coupled nonlinear partial differential equations, and hence obtaining analytical solutions

Weak stability boundary (WSB) and low thrust transfer trajectories to planets
To understand the dynamics of WSB trajectories and develop algorithms to obtain WSB trajectories from Earth to Moon and Mars. The role of periodic