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This wavelet theory is a powerful tool for dealing with nonlinearity. To start with basic principles of the nonlinear vibration equation, this paper proposed a nonlinear restoring force model in accordance with existing model characteristic, we derived wavelet perturbation solution of nonlinear vibration equation based on wavelet transform and perturbation methods. Finally, signal-degree-of-system...
In order to study the evacuation characteristics under complex building structure, an emergency evacuation model considering multi-exits was established based on cellular automaton in this paper, The distance from pedestrian location to the exit and pedestrians' density near exit were considered in the model, meanwhile, the exit door size is a key factor for exit choice during escaping. We simulated...
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