CAE kinetic analysis based rotary table structure optimization design method

Abstract

The invention belongs to the technical field of mechanical engineering, particularly relates to a CAE kinetic analysis based rotary table structure optimization design method, and aims to solve the difficult problems in dynamic and static mechanics design of an existing vibratory rotary table. The method comprises the steps of preliminarily determining a shape, size and wall thickness layout; decomposing a rotary table structure; preliminarily analyzing parts; checking a design value for the first time; analyzing the whole body again; and checking the design value for the second time. According to the method, a conventional empirical design is replaced with a CAE kinetic analysis part; each module is subjected to vibration analysis by utilizing a CAE technology to obtain a natural frequency and a vibration mode of the module, and the natural frequency is increased by adopting a reinforcing rib or a structure deformation mode for a position with the excessively large vibration mode quantity; and the natural frequency and stress-strain of an overall model are analyzed by utilizing CAE to find out weak links, and the stress-strain values are enabled to be within an available stress value range by changing parameters such as the structure size, the wall thickness and the like.

Description

technical field [0001] The invention belongs to the technical field of mechanical engineering, and in particular relates to a method for optimal design of a turntable structure based on CAE dynamic analysis. Background technique [0002] The turntable is an important ground test equipment, which is used for verification and calibration of inertial navigation system and inertial components, and for simulating aircraft attitude motion. [0003] Due to the special status and wide market demand of the turntable, it is generally valued by the world's technologically developed countries and developing countries. The United States, Russia, Germany, France, India, China, Switzerland and other countries have invested a lot in the research and development of turntables. human and financial resources. At present, the gap between our country and the world's advanced level is mainly manifested in: (1) the lack of in-depth research on the related technologies of the turntable, which lead...

AI Technical Summary

Problems solved by technology

Since the advent of the turntable, unreliability and instability have brought many troubles to users, and because the functions of the turntable are becoming more and more complex and the precision is getting higher and higher, instability and unreliability have become a major hidden danger of test equipment

Images