SIGN-OSCILLATING PROPERTY OF STIFFNESS MATRIX OF DIFFERENCE DISCRETE SYSTEM AND QUALITATIVE PROPERTIES OF BEAM WITH OVERHANG

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Journal of Vibration and Shock ›› 2009, Vol. 28 ›› Issue (6) : 113-117.

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SIGN-OSCILLATING PROPERTY OF STIFFNESS MATRIX OF DIFFERENCE DISCRETE SYSTEM AND QUALITATIVE PROPERTIES OF BEAM WITH OVERHANG

Wang Qi-shen1 Wang Da-jun2，3 Wu Lei1
Liu Quan-jin 1 Zhang Li-hua 1

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Abstract

In this paper the difference discrete models of the beam with overhang are established, the stiffness matrices of above discrete system are determined and their sign-oscillating property are proved. On the basis of it, some qualitative properties of the frequencies and modes of the discrete system of the beam with overhang are obtained.

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Beam with overhang / Stiffness matrix / Sign-Oscillating property / Qualitative properties

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Wang Qi-shen Wang Da-jun; Wu Lei Liu Quan-jin Zhang Li-hua . SIGN-OSCILLATING PROPERTY OF STIFFNESS MATRIX OF DIFFERENCE DISCRETE SYSTEM AND QUALITATIVE PROPERTIES OF BEAM WITH OVERHANG[J]. Journal of Vibration and Shock, 2009, 28(6): 113-117