The General Rotorcraft Aeromechanical Stability Program (GRASP) was developed to analyze the steady-state and linearized dynamic behavior of rotorcraft in hovering and axial flight conditions. Because of the nature of problems GRASP was created to solve, the geometrically nonlinear behavior of beams is one area in which the program must perform well in order to be of any value. Numerical results obtained from GRASP are compared to both static and dynamic experimental data obtained for a cantilever beam undergoing large displacements and rotations caused by deformation. The correlation is excellent in all cases.
Application of GRASP (General Rotorcraft Aeromechanical Stability Program) to Nonlinear Analysis of a Cantilever Beam
1987
10 pages
Report
No indication
English
Aircraft , Cantilever beams , Mathematical models , Computerized simulation , Computer programs , Helicopters , Axes , Flight , Deformation , Hovering , Dynamics , Linearity , Rotary wing aircraft , Behavior , Geometric forms , Nonlinear systems , Displacement , Nonlinear analysis , GRASP Computer Program