- Based on the results and finite element formulation, the flutter force has been considered as equivalent aerodynamic stiffness matrix and equivalent aerodynamic damping matrix.
- Dynamics theory and the “mass spring dashpot” system model were used to develop an equilibrium equation.The mass matrix, elasticity matrix and damping matrix were given.
- The complex modal analysis method is generalized to the cases in which stiffness matrix may be singular and mass matrix,damping matrix and stiffness may be nonsymmetric.
- The limit of damping matrix was extended in Hamiltonian model standard form, and this extension was proved to be reasonable by using it to generator Hamiltonian model.
- The party was a bit of a damp squib.
- Leather can deteriorate in damp conditions.