CN103870633B - A kind of large scale structure rapid modeling system - Google Patents

Abstract

The invention discloses a large-scale structure fast modeling system, which comprises: a basic database module, a structure overall modeling module, a structure fast output module, and a main structure modeling module. The overall structural modeling module inherits the overall opening, interface and other parameter requirements through the skeleton template to carry out overall structural modeling. This model is a wireframe model that can be used for strength finite element analysis; parameter design of the main structure, and complete the 3D digital prototype modeling of the main structure on the basis of the skeleton of the overall modeling of the structure; the rapid output sub-module of the structure refines the model according to the requirements of strength finite element analysis and 3D annotation, and completes the rapid Modeling, the basic database module supports the modeling information.

Description

A Rapid Modeling System for Large Scale Structures

technical field

The invention relates to the technical field of structural modeling, in particular to a rapid modeling system applied to large structures.

Background technique

In the existing technology of structural modeling in the aerospace field, the common method is to design each component first, and then carry out the overall assembly coordination after completing the design of the components. The advantage of this modeling method is that each model is independent, the requirements for machine configuration are low, and the requirements for personnel design ability are low. The disadvantage is that the design process lacks an overall concept, the modeling is not standardized, and the modification workload is heavy when external conditions change. The application of this design method has certain limitations in the aerospace field that requires strict design standardization, refinement, and rapidity.

In the structural system of the launch vehicle, there are nearly 20 compartments with independent functions and requirements. If the traditional modeling design method is used, the modeling cycle is long and the modification is difficult. Moreover, the modeling of each compartment is not standardized, and the structural matching is poor, which seriously affects work efficiency.

Contents of the invention

The present invention provides a large-scale structure rapid modeling system aiming at the above-mentioned deficiencies in the prior art. The present invention is realized through the following technical solutions:

A rapid modeling system for large structures, which is used to quickly establish a three-dimensional digital model of large structures. The rapid modeling system for large structures includes:

The basic database module is used to store several: skeleton template, finite element analysis template, design parameter optimization template and 3D modeling template;

The structural overall modeling module is connected to the basic database module, including an overall skeleton model establishment sub-module. The overall skeleton model establishment sub-module calls the corresponding Modeling of the skeleton template to generate a wireframe model for strength finite element analysis and a skeleton model for main structure modeling;

The structure fast output module connects the structural overall modeling module and the basic database module, including the finite element analysis sub-module, which is used to receive the wireframe model and call the corresponding finite element analysis template from the basic database module. Wireframe model for finite element analysis;

The main structure modeling module connects the overall structure modeling module, the structure fast output module and the basic database module to receive the skeleton model, and calls the corresponding design parameter optimization template and 3D modeling from the basic database module according to the results of the finite element analysis. Die template, respectively optimize the design parameters of several sections of the skeleton model and perform three-dimensional modeling to obtain a three-dimensional digital prototype;

Among them, the fast structure output module receives the 3D digital prototype, refines the model of the 3D digital prototype according to the results of finite element analysis, and generates 2D drawings and 3D marked models for production.

Preferably, the main structure modeling module includes a design parameter optimization sub-module for optimizing design parameters of several sections of the skeleton model.

Preferably, the basic database module stores data using a unified specification standard.

Compared with the traditional modeling method, the large-scale structure rapid modeling system of the present invention has standardized and parameterized modeling, automatic drawing work, and increased modeling efficiency by 50%.

Description of drawings

What Fig. 1 shows is the working flow schematic diagram of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described and discussed below in conjunction with the accompanying drawings of the present invention. Obviously, what is described here is only a part of the examples of the present invention, not all examples. Based on the present invention All other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

In order to facilitate the understanding of the embodiments of the present invention, specific embodiments will be taken as examples for further explanation below in conjunction with the accompanying drawings, and each embodiment does not constitute a limitation to the embodiments of the present invention.

As shown in FIG. 1 , a large-scale rapid structural modeling system provided by the present invention includes: a basic database module 40 , an overall structural modeling module 10 , a rapid structural output module 30 , and a main structural modeling module 20 .

During work, the overall skeleton model building sub-module in the structural overall modeling module 10 calls the corresponding skeleton template from the basic database module to model according to the input overall parameters, overall opening and interface information, and docking coordination information, and generates Wireframe model for strength finite element analysis and skeleton model for main structure modeling;

The finite element analysis sub-module in the structure rapid output module 30 is used to receive the wireframe model, and call the corresponding finite element analysis template from the basic database module to perform finite element analysis on the wireframe model, and the result of the part analysis is returned to the main Structural modeling module;

The main structure modeling module 20 receives the skeleton model, and calls the corresponding design parameter optimization template and three-dimensional modeling template from the basic database module according to the results of the finite element analysis, respectively optimizes the design parameters of several sections of the skeleton model and performs 3D modeling, get 3D digital prototype, and transfer to the structure fast output module;

The fast structure output module 30 refines the model of the 3D digital prototype according to the results of the finite element analysis, and generates 2D drawings and 3D marked models for production.

In the present invention, the basic database module 40 provides information support such as skeleton templates, finite element analysis templates, design parameter optimization templates, three-dimensional modeling templates, material properties, and standard parts libraries for modeling. Corresponding information complete work. The information in the basic database adopts a unified standard to store data, the design parameters are automatically correlated with each other, and the design parameter transmission is unique and accurate. Each module can independently input design parameters to complete independent design functions, and each module can independently call design parameters and templates to modify the design.

Compared with the traditional modeling method, the large-scale structure rapid modeling system of the present invention has standardized and parameterized modeling, automatic drawing work, and increased modeling efficiency by 50%.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present invention can easily think of changes or Replacement should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (3)

1. a large-scale structure rapid modeling system, in order to set up the three-dimensional digital model of large-scale structure rapidly, it is characterized in that, described large-scale structure rapid modeling system comprises: The basic database module is used to store several skeleton templates, finite element analysis templates, design parameter optimization templates and 3D modeling templates; The structural overall modeling module is connected to the basic database module, including an overall skeleton model establishment sub-module, and the overall skeleton model establishment sub-module is based on the input overall parameters, overall opening and interface information and docking coordination information, from the basic The corresponding skeleton template is called in the database module for modeling, and a wireframe model for strength finite element analysis and a skeleton model for main structure modeling are generated; The structure fast output module is connected to the overall structural modeling module and the basic database module, and includes a finite element analysis submodule, and the finite element analysis submodule is used to receive the wireframe model and obtain Invoke the corresponding finite element analysis template to perform finite element analysis on the wireframe model; The main structure modeling module is connected to the overall structural modeling module, the fast output module of the structure and the basic database module to receive the skeleton model and extract Invoking the corresponding design parameter optimization template and three-dimensional modeling template, respectively performing design parameter optimization and three-dimensional modeling on several sections of the skeleton model to obtain a three-dimensional digital prototype; Wherein, the fast structure output module receives the 3D digital prototype, refines the model of the 3D digital prototype according to the results of finite element analysis, and generates 2D drawings and 3D marked models for production. 2. The large-scale structure rapid modeling system according to claim 1, wherein the main structure modeling module includes a design parameter optimization sub-module for optimizing design parameters of several sections of the skeleton model. 3. The large-scale structure rapid modeling system according to claim 1, wherein the basic database module stores data using a unified standard.