By introducing Sine-squared potential, the motion equations of the particles are reduced to pendulum equation with damping term and forced term in the framework of classical mechanics and the dipole approximation. The stability of the system was discussed by using Hamiltonian principle and phase plane method, and the dechanneling coefficient and dechanneling length of the system were derived. The results show that the face channeling radiation of electrons and positrons are very similar in addition to applicable energy region. The periodic bent crystal can be obtained using the acoustic methods, mechanical methods or gradient doping method, etc. and the required particle beam can be provided using available accelerators.
