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Tuesday, November 2, 2010

Based on the car hand brake arm assembly parts residual deformation and failure analysis

This article describes the subject's background and hand brake arm assembly design requirements, describes the hand brake arm assembly and nonlinear failure studying the current situation, and the application of non-linear software. Also introduced the hand brake arm assembly of the working principle and structure characteristics of the nonlinear mechanical characteristics of them. Design, taking into account relevant under the premise of the overall proposed research and analysis program to the hand brake arm assembly-based components as the research object for the study of nonlinear theory based on the failure of rival parts of the brake arm analysis studied, and the method of modal analysis to compare validation, such research is currently in the country is still rare. In related research on the nonlinear theory, this paper describes the nonlinear finite element method the basic theory and basic to discuss the basic numerical method related to these solution were compared. Detailed analysis and nonlinear analysis in highly explicit algorithm for the implicit method has the advantage.Research and analysis process as a whole provided a good theoretical foundation and protection. Hand brake arm assembly of the structure is complicated, so the modeling process needs to consider various issues, in order to ensure the calculation of the overall size of the computation time and accuracy on the coordination. In this paper, the type of model, element selection and mesh, the connection between relations and exposure settings, the selection of material model parameters and the failure to determine such issues as ensuring the accuracy of the premise, good control of the calculation of the size and computation time, for the future provide a basis for further research and protection. Data provided by the enterprise, and according to the actual situation in hand brake arm assembly was established based on the hand brake arm parts failure analysis model, and related design rules, the typical profile of four simulation analysis has been related stress and strain after the failed units, as well as the overall structure of the residual deformation. According to simulation results, which can improve the program, improve program can effectively improve the product quality.Finally, hand-brake arm assembly for modal analysis and modal analysis results were compared with the results of failure analysis studies, from the side of the hand brake arm assembly structure study merits. The failure to establish the nonlinear model and the simulation results of product design companies provide guidance and improve the enterprise's product design capabilities. This study for the hand brake arm assembly design and development provides important data to guide and enhance the employees and software products using the theoretical capacity, thereby increasing the product quality and business efficiency. And on the nonlinear design of related products provides an important reference, has a good theoretical and practical significance.
 
Keywords: hand brake arm failure nonlinear finite element explicit algorithm

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