Rigid-flexible coupling dynamics modeling method based on Simulink platform

Abstract

The invention discloses a rigid-flexible coupling dynamics modeling method based on a Simulink platform. The method comprises the following steps that firstly, a system three-dimensional model is built; secondly, a system is divided into a rigid part subsystem and a flexible part subsystem, and a rigid part subsystem model is built on the Simulink platform; thirdly, modal analysis is conducted on a flexible part, and a modal analysis result is output; fourthly, according to the modal analysis result, a flexible part subsystem model is built on the Simulink platform; fifthly, the rigid part subsystem model and the flexible part subsystem model are connected, loads and constraints are applied, and building of a rigid-flexible coupling model is completed. By means of the method, efficient flexible part parameterization, automatic modeling and analysis of a flexible part rigid-flexible coupling effect can be achieved, and a support is provided for the design, analysis and optimization of a rigid-flexible coupling system.

Description

technical field [0001] The invention belongs to the technical field of mechanical system dynamics modeling, and more specifically relates to a rigid-flexible coupling dynamics modeling method based on a Simulink platform. Background technique [0002] Modern complex mechanical systems are gradually developing towards large-scale and miniaturization in terms of structural size. The former, such as various construction machinery equipment, marine ship equipment, aerospace equipment, etc., presents the characteristics of large structural size, high transmission energy, and high strength requirements. The latter, such as various IC (integrated circuit) manufacturing equipment, micro-operation, precision measurement equipment, etc., presents the characteristics of small structure size, fast operation speed, and high precision requirements. With the continuous increase of equipment structure size and the accumulation of structural deformation of components, the flexibility charact...

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Problems solved by technology

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a rigid-flexible coupling dynamics modeling method based on the Simulink platform, aiming at solving the problem that the rigid-flexible coupling dynamics under the general platform cannot be efficiently constructed in the prior art Simulation model, which uses Simulink, a more open computing platform with stronger computing power, for rigid-flexible coupling dynamics modeling and simulation analysis, so that it can be used universally in more fields in the future

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