초록 ▼

The invention discloses methods and apparatuses for vibrational energy removal in a structural system. Sensors in the structure determine the vibration modal energy content of the structure only in real time, and detect whether controllable springs or “stiffeners”are in tension, compression, or are

The invention discloses methods and apparatuses for vibrational energy removal in a structural system. Sensors in the structure determine the vibration modal energy content of the structure only in real time, and detect whether controllable springs or “stiffeners”are in tension, compression, or are relaxed. Relaxed springs are stiffened or made less stiff so as to transfer energy in low vibrational modes into higher modes resulting in an accelerated passive dissipation of system energy. The technique is applicable for vibration damping in aircraft, watercraft, drilling platforms, space, civil, and other structures.

대표청구항 ▼

A method of attenuating vibration in a structure comprising the steps of: a) measuring strain in predetermined structural components within the structure; b) sensing the magnitude of selected vectorial conditions within the structure by sensors within the structure; c) calculating modal energy of th

A method of attenuating vibration in a structure comprising the steps of: a) measuring strain in predetermined structural components within the structure; b) sensing the magnitude of selected vectorial conditions within the structure by sensors within the structure; c) calculating modal energy of the structure from the sensed vectorial conditions; and d) dynamically changing the stiffness of selected ones of the predetermined structural components of the structure, thereby changing the vibration characteristics of the modal energy of the structure.