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Undesirable vibrations are controlled in a mechanical structure by confining the vibrations to one or more specified areas of the structure. Vibration confinement is achieved using a confinement device which effectively applies both translational and torsional forces to the structure. The strength o

Undesirable vibrations are controlled in a mechanical structure by confining the vibrations to one or more specified areas of the structure. Vibration confinement is achieved using a confinement device which effectively applies both translational and torsional forces to the structure. The strength of the translational and torsional forces, and the position of the confinement device are chosen by the designer to select a vibrational energy confinement region. Judicious selection of the confinement region permits the structure to avoid the transfer of vibrational energy to particularly sensitive portions of the structure.

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Undesirable vibrations are controlled in a mechanical structure by confining the vibrations to one or more specified areas of the structure. Vibration confinement is achieved using a confinement device which effectively applies both translational and torsional forces to the structure. The strength o

Undesirable vibrations are controlled in a mechanical structure by confining the vibrations to one or more specified areas of the structure. Vibration confinement is achieved using a confinement device which effectively applies both translational and torsional forces to the structure. The strength of the translational and torsional forces, and the position of the confinement device are chosen by the designer to select a vibrational energy confinement region. Judicious selection of the confinement region permits the structure to avoid the transfer of vibrational energy to particularly sensitive portions of the structure. ne doors, said door locking bolt being connected to said output shaft wherein a rotation of said output shaft in a clockwise direction approximately ninety degrees causes said door locking bolt to be withdraw from said locking bolt receiver allowing said user to open the magazine doors for said weapons storage facility. 3. The method of claim 2 wherein a cam arm is connected to an end of said output shaft which extends from said security lock, said door locking bolt having a substantially vertically positioned slot disposed at one end of said door locking bolt, said cam arm having a locking screw, the locking screw of said cam arm being slidably positioned within the slot for said door locking bolt. 4. The method of claim 1 further comprising the step of deactivating a security alarm connected to the shutter plate for said security lock prior to unlocking said magazine doors. 5. The method of claim 1 wherein said security alarm is deactivated by opening a normally closed switch, said normally closed switch being connected to said security alarm and a normally open alarm activation switch, said normally open alarm activation switch engaging said shutter plate when said shutter plate is rotated to expose said lock cylinder. 6. The method of claim 1 further comprising the step of removing a broken key from said lock cylinder whenever said key breaks within said lock cylinder by using a duplicated key inserted into said lock cylinder, said duplicate key forcing said broken key from said lock cylinder through a back plate within said security lock. 7. The method of claim 1 wherein said key includes a cylindrical housing which allows said user to retract said key into said cylindrical housing to prevent damage to said key whenever said key is not in use. 8. The method of claim 1 wherein said shutter plate prevents dust and contamination from entering said lock cylinder preventing damage to said lock cylinder. 9. A lock apparatus for securing a pair of magazine doors on a weapons storage facility, comprising: a handle having a handle extension rotabably mounted within a door handle opening in a first magazine door of said pair of magazine doors; a rotatable shutter plate positioned on the inside of said first magazine door, said handle extension rotatably engaging said shutter plate when said handle is fully extended from said first magazine door; a retractable key having a cylindrical shaped housing and a key guide, said retractable key being adapted to fit within a cylindrical shaped opening having a slot within said first magazine door; a lock housing mounted on the inside of said first magazine door in alignment with said cylindrical shaped opening and said door handle opening, said housing having a back plate; a lock cylinder mounted within said lock housing, said lock cylinder being aligned with said cylindrical shaped opening to receive said retractable key when said handle is rotated approximately ninety degrees counterclockwise which rotates said shutter plate permitting key access to said lock cylinder; an eccentric cam rotatably mounted within said lock housing, said eccentric cam being connected to said lock cylinder wherein said eccentric cam rotates when said retractable key rotates within said lock cylinder; a locking plate slidable mounted in said lock housing, said eccentric cam engaging said locking plate such that said locking plate moves laterally within said housing when said eccentric cam rotates; an output shaft rotatably mounted in said lock housing, said output shaft extending from said lock housing through a shaft opening within the back plate of said lock housing, said locking plate holding said output shaft in a fixed rotational position; and a spring loaded clutch affixed to said handle extension, said spring loaded clutch having an engagement pin, said spring loaded clutch being aligned with said output shaft to move in a forward direction within said housing and engage said output shaft to pe rmit rotational movement of said output shaft after said eccentric cam rotates in a first direction which moves said locking plate laterally away from said output shaft releasing said output shaft from said fixed rotational position. 10. The lock apparatus of claim 9 further comprising a spring loaded detent positioned within said output shaft in alignment with the engagement pin for said spring loaded clutch, said spring loaded detent when engaged by the engagement pin for said spring loaded clutch insuring synchronous rotational movement between said output shaft and said clutch. 11. The lock apparatus of claim 9 wherein a user inserts said retractable key into said lock cylinder and rotates said retractable key approximately one hundred degrees counterclockwise which releases said output shaft from said locking plate allowing said user to depress the handle of said locking apparatus engaging said output shaft and dis-engaging said shutter plate and then rotate said handle ninety degree counterclockwise to open said pair of magazine doors. 12. The lock apparatus of claim 9 wherein the slot of said cylindrical shaped opening is adapted to receive said key guide for said retractable key aligning said retractable key with said lock cylinder which prevents damage to said retractable key when said user inserts said retractable key into said lock cylinder. 13. The lock apparatus of claim 9 further comprising a door locking bolt which extends into a locking bolt receiver mounted on a second magazine door of said pair of magazine doors, said door locking bolt being retractable from said locking bolt receiver, said door locking bolt being connected to said output shaft wherein a rotation of said output shaft in a clockwise direction approximately ninety degrees causes said door locking bolt to be withdraw from said locking bolt receiver allowing a user to open the magazine doors for said weapons storage facility. 14. The lock apparatus of claim 13 further comprising a cam arm is connected to an end of said output shaft which extends from said security lock, said door locking bolt having a substantially vertically positioned slot disposed at one end of said door locking bolt, said cam arm having a locking screw, the locking screw of said cam arm being slidably positioned within the slot for said door locking bolt. 15. The lock apparatus of claim 9 further comprising a security alarm connected to the shutter plate for said security wherein a user de-activates said security alarm prior to unlocking said magazine doors. 16. The lock apparatus of claim 15 wherein said security alarm is deactivated by opening a normally closed switch, said normally closed switch being connected to said security alarm and a normally open alarm activation switch, said normally open alarm activation switch engaging said shutter plate when said shutter plate is rotated to expose said lock cylinder. 17. The lock apparatus of claim 9 wherein said shutter plate prevents dust and contamination from entering said lock cylinder preventing damage to said lock cylinder. 18. A lock apparatus for securing a pair of magazine doors on a weapons storage facility, comprising: a handle having a handle extension rotabably mounted within a door handle opening in a first magazine door of said pair of magazine doors; a rotatable shutter plate positioned on the inside of said first magazine door, said handle extension rotatably engaging said shutter plate when said handle is fully extended from said first magazine door; a retractable key having a cylindrical shaped housing and a key guide, said retractable key being adapted to fit within a cylindrical shaped opening having a slot within said first magazine door; a lock housing mounted on the inside of said first magazine door in alignment with said cylindrical shaped opening and said door handle opening, said housing having a back plate; a lock cylinder mounted within said lock housing, said lock cylinder being aligned w