Research On Mechanical Product Design Methods Based On Multi-body Dynamics And Finite Element Methods

As the mechanical product increasingly to the efficient, high-speed, precision, lightweight and automation direction development, the traditional design and analysis methods have been difficult to meet the performance requirements of modern products. Structural systems must have good dynamic performance in addition to good static performance. Therefore, it is very necessary to study the dynamic design method of mechanical product structure system.Aiming at the key problems in practical engineering, this paper uses the multi-body dynamics and finite element simulation methods to study the product design and dynamic analysis methods to improve the mechanical properties with the underground scraper and hydraulic pendulum shearing machine as an example. Firstly, this paper introduced the basic theory of multi-body dynamics and finite element methods. Secondly, it made the rigid-flexible dynamics model for the coupling underground scraper working device using ADAMS and ANSYS software, and carried on the analysis of kinematics and dynamics simulation, then analyzed the boom of finite element and calculate the fatigue life. Thirdly, it used ADAMS and ABAQUS software to model the multi-body system of hydraulic pendulum shearing machine, analyzed the kinematics and dynamics simulation, analyzed the finite element of the cutter frame and the body frame, and strengthen the weak part and made the lightweight improvement of the non weak parts. Finally, this paper has studied the multi-body dynamics and finite element simulation data transfer mechanism, and joint the multi-body dynamics and finite element simulation method to rise for a dynamic design method. It is summarized a design method of the structure of general mechanical products which can be applied to more engineering examples to study the dynamic characteristics of the products.Multi-body dynamics and finite element simulation methods to analyze the dynamic characteristics of the product structure, not only have solved the specific problems in practical engineering, but also have greatly enriched and developed the design concept of the mechanical product structure which has important theoretical and engineering application value to modernization digital design of product structure.