The disclosure provides a system and method for producing a 3D printed object that includes printing a plurality of cavities (110) within or interior to the object (1) and providing a plurality of passages (120) between the cavities so that at least a portion of the printed cavities are in fluid communication with each other. A fluid such as a gas or liquid (2) is then provided to fill a portion of the printed cavities, thereby providing a structure that is capable of damping impacts thereto.