The purpose of this master thesis is to develop an analytical model of shaped charges with a conical geometry. The model is then implemented and evaluated in a C-program. The program is able to simulate many different types of a shaped charges. The main reason to have an analytical simplification of the problem is the long execution times in the much more sophisticated three-dimensional hydrocodes. Another reason is that some hydrocodes have difficulties simulating the jetting process of a shaped charge. The model described here is based on Gurney equations, the PER theory and models that describe the acceleration of the liner.We have developed a new Gurney equation for a cylindrical geometry with a casing, and we have also suggested a new and more accurate acceleration model. A program has been created that corresponds well to reality considering it is a onedimensional model. The program simulates the whole process from detonation to jet formation.