A demand-oriented interactive design method for driving wheel structure based on geometric features

Abstract

The invention provides a demand-oriented geometric feature-driving turbine disc structure interactive design method. The interactive design method comprises following steps of 1, inputting coordinate values of control points of a turbine disc two-dimensional geometrical configuration; 2, establishing a turbine disc axisymmetric finite element model for the turbine disc two-dimensional geometrical configuration; 3, carrying out structural analysis on the established turbine disc axisymmetric finite element model; and 4, in dependence on the design demand, changing the turbine disc two-dimensional geometrical configuration, and automatically displaying the coordinate values of the control points of the turbine disc two-dimensional geometrical configuration, establishing the turbine disc axisymmetric finite element model and carrying out finite element calculation. Through the above steps, the control points of the turbine disc two-dimensional geometrical configuration can be dragged by a mouse, turbine disc weight calculation, stress-strain analysis, fatigue life prediction, meridian plane burst speed calculation and radial burst speed calculation are automatically carried out, the turbine disc structure design efficiency is improved, and the case that during the previous design process, once the scheme is changed, modeling needs to be carried out again manually, and therefore time and manpower are wasted is avoided.

Description

technical field [0001] The invention provides a demand-oriented and geometric-feature-based driving wheel structure interactive design method, which belongs to the field of mechanical design. Background technique [0002] The disc is one of the key components of rotating machinery such as aero-engines and gas turbines. Under the condition of meeting the design requirements such as strength and fatigue life, in order to improve the thrust-to-weight ratio of the engine, the weight of the disc structure should be as light as possible. The quality of the wheel disc structure design directly affects whether the turbine rotor can be normally constructed and the overall performance of the engine is good or bad. [0003] The traditional wheel structure design method is based on the experience of engineers and a large number of experiments, which is time-consuming and laborious, and often fails to achieve the desired design effect. With the development of finite element, when design...

AI Technical Summary

Problems solved by technology

[0003] The traditional wheel structure design method is based on the experience of engineers and a large number of experiments, which is time-consuming and laborious, and often fails to achieve the desired design effect

With the development of finite element, when designing the structure of the roulette, the two-dimensional geometric configuration of the roulette is manually modified, and the axisymmetric finite element model of the roulette is established for stress-strain analysis. This design method is also not only waste of time and waste of manpower

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