Modeling stress-strain states of spring thin-walled structures with variable stiffness

A method is considered concerning geometrically nonlinear deformation of thin-walled structures in large displacement. The method is developed for modeling and analysis of the stress-strain states and enables to avoid a number of the theoretical contradictions. A principle is posed to solve nonlinear problems using linear stiffness matrices of finite elements. Features of modeling and analysis are demonstrated for bending of spring thin plates under supercritical loading. It is shown that, even by small number of finite elements, the method allows to obtain great accuracy for bending modes as well as for components of stress. A simple and effective technique has been created to solve the problems with reference to systems of such spring structures. The method has been approved applied to the stiffness control mechanisms of a driver vibration protecting systems.