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종동력(從動力)을 받는 Timoshenko 외팔보에서 자유단의 탄성구속이 안정성에 미치는 영향
김현수,윤한익,손종동 한국산업안전학회 1996 한국안전학회지 Vol.11 No.2
On the stability of Timoshenko cantilever beam subjected to a follower force, the influence of the characteristics of elastic constraints at the free end is studied. The equations of rnotion and boundary conditions of this nonconservative elastic system are estabilished by using the Hamilton's principle. Upon evaluation of the stability of this system, the effect of shear deformation and rotatory inertia is considered in calculation. Using cowper's formulae Timoslienko's shear coefficient K are determined. From this investigation it is found that the constrain parameter have an appreciable stabilizing effect in this nonconservative system. Moreover, it is obvious that the small values of K decrease the flutter load of this system.
김현수,윤한익,손종동 한국산업안전학회 1998 한국안전학회지 Vol.13 No.1
On the stability of the cantilever beam subjected to a follower force at the free end, the influences of the translational spring and the moment of inertia of a tip mass at the free end have been studied by numerical methods. The centroid of a tip mass is offset from the free end of a Beam and is located along its extended axis to vary the value of moment of inertia of a tip mass. It is proved that as the constants of a spring supporting the free end are augmented, the critical flutter loads of the above system decrease, whereas they increase without a tip mass.