Abstract:The magnetostatic field perturbed by elastic deformation of the generalized Flamant problem for the half-plane ferromagnetic structure in earth magnetic field is solved analytically by the Fourier transform method. The results of a concentrated force problem degenerated from this problem is derived from the present expressions. The numerical results show that the distribution of the generalized Flamant load can affects the elastic deformation of the structure, and then affects the distributions and the values of the magnetostatic field perturbed by elastic deformation; the distributions of magnetostatic field are directly related to the distributions of the maximum load area, and the values of magnetostatic field are positively associated with the values of the forces; in addition, the magnetostatic field perturbed by elastic deformation increases with the decreasing distance away from the structure surface, and it increases as the size of the load distribution increases.