Method for producing a piezoelectric structural unit

The invention relates to a piezoelectric assembly including a piezoelectric actuator prestressed and inserted into an elastic hollow body in an extension direction between a top and a bottom cover plate connected to the hollow body. The invention also relates to a method for producing a structural unit with a prestressed piezoelectric actuator and to a method for producing a hollow body used to prestress a piezoelectric actuator. A method for producing a structural unit with a prestressed piezoelectric actuator includes the steps of inserting a front end of the actuator into a hollow body, form-lockingly or force-lockingly connecting the inserted front end of the actuator to the hollow body, pressing the actuator into the hollow body with a defined force establishing a prestress of the actuator, and force-lockingly or form-lockingly connecting the actuator to the hollow body in the vicinity of a rear end of the actuator, for fixing the prestress of the actuator.