The Risk Assessment And Prevention Research Of Typical Amusement Rides At Complex Working Condition

The amusement rides are the carriers of passengers, the quality and safety of the amusement rides have a significant association with the passengers’ life and health. The products of amusement become faster, higher and more complex while the scientific researches in this area cannot advance with the times. In this case, the technology related with the safety of amusement rides must be improved. In this paper, a typical rides-large pendulum is studied for the risk assessment from the system dynamics simulation, finite element modeling, parametric testing in the actual working conditions and specific case analysis of the failure modes of the pendulum. The knowledge engineering theory is applied for the study of the risk assessment. The research method is verified the effectiveness and has important theoretical significance and application value.(1) Dynamic simulation of large pendulum based on the virtual prototyping technologyThe dynamics model is built applying the virtual prototyping technology based on the toppogy analysis of large pendulum, considering any possible working condition, such as live loads, gravity, drive force, wind load, friction and the combination. The kinematic and dynamic performances, as well as the key components stress are obtained by the simulation. This provides a data support for the further strength analysis and safety assessment.(2) The analysis of run test and failure mode of large pendulumThe testing platform is built for the real-time testing with the wireless data transmission way. Considering the operating characteristics of the pendulum, stress, vibration and human acceleration are tested in different working conditions, such as full load, partial load and no load conditions, to verify the effectiveness of the virtual prototype design. The risk prevention measures have been provided for the possible failure mode. The typical falses of pendulum are researched by finite element analysis and the failure parts testing. The main reason of the failure is appointed and the advanced measurements are suggested.(3) The failure knowledge database based on the failure analysis of components and dangerous sourceThe failure knowledge database is built from component failure analysis and dangerous source failure analysis based on the basis of the stress analysis and typical case failure research. The failure knowledge database provides the necessary data for the design risk assessment. (4) Research of risk assessmentThe idea and progress of the risk assessment of amusement are proposed. A new risk assessment method for the amusement rides is built combining the failure mode analysis of components and danger elimination method, which can eliminate the system risk source from top to down and eliminate the components risk source from down to top. The solutions can be found in the design concept, when the risk cannot be control or eliminate by the above two methods. For example of large pendulum, the proposed risk assessment approach and failure prevention measures are effective and applicable.(5) The application of risk assessment systemThe risk assessment system based on failure analysis and failure knowledge database of large pendulum is built according to the analysis of the design risk assessment method. The system makes the assessment results more effective and scientific, which achieve the automatic processing of failure analysis and prevention.