| With the development of automobile industry, the traffic accident has caused serious danger to the human. Speed limit is attracting more and more attention, and intrigues the researchers. So far, speed limit is made by controlling the throttles of an automobile. Based on this, the inertia-enforced-speed limiter is more thoroughly studied in this paper. Main conclusions are as follows:1. Based on the thin shell theory and the bending theory of thin plate in large deflection, the dynamic governing equations of elastic blade in large deflection were deduced. The initial condition and boundary condition were given, and the difference scheme of the dynamic governing equations was written.2. Based on the ANSYS and LS-DYNA, the finite element model of blade was established, and computer simulation on the blade in rotational motion was carried out considering large deformations. The motion rule of blade, stress cloud chart, animation, and radial deformation history curves of the node on the elastic blade free end in different thickness and angular acceleration were given. The maximum deformation of blade is obtained from those history curves. And the influence of thickness and angular acceleration on maximum deformation of blade was analyzed.3. Based on the ANSYS and LS-DYNA, the finite element model of inertia-enforced-speed limiter was established, and computer simulation on the inertia-enforced-speed limiter was carried out considering large deformations and the contact between blade and cylinder. The motion rule of blade, contact rule between blade and cylinder, animation, and radial deformation history curves of the node on the elastic blade free end and friction history curves in different thickness and angular acceleration were given. The maximum friction is obtained from those friction history curves. And the influence of thickness and angular acceleration on maximum friction was analyzed. |
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