Nonlinear analysis of a simply-supported composite beam under random excitations

Conference · Sat Dec 31 04:00:00 EST 1994

OSTI ID:481991

Eslami, H; Gudmundson, S ^[1]

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1. Embry-Riddle Aeronautical Univ., Daytona Beach, FL (United States)

Nonlinear analysis of composite laminated beams subjected-to random excitation is studied here. The forcing function is a stationary Gaussian type random excitation. The governing partial differential equations of motion are obtained by considering the Von Karman type geometrical nonlinearity. These partial differential equations are transformed into nonlinear Ordinary differential equations of Duffing type by applying the Galerkin`s method. The resulting nonlinear ODE are first solved by using the equivalent linearization method and the numerical integration (Runge Kutta) method. The equations are reduced to that of isotropic beam and results are also compared with the previously published ones.

• OSTI ID: 481991
• Report Number(s): CONF-960503--
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
42 ENGINEERING
66 PHYSICS
99 GENERAL AND MISCELLANEOUS
AIRCRAFT
DIFFERENTIAL EQUATIONS
EQUATIONS OF MOTION
MECHANICAL VIBRATIONS
NONLINEAR PROBLEMS
RUNGE-KUTTA METHOD
STRUCTURAL BEAMS