Method for constructing body-in-white three-dimensional mathematical model

Abstract

The invention discloses a method for constructing a body-in-white three-dimensional mathematical model, which comprises the following steps of: acquiring first three-dimensional skeleton data and first three-dimensional modeling data of a body-in-white, and constructing a first body-in-white three-dimensional mathematical model according to the first three-dimensional skeleton data and the first three-dimensional modeling data; according to the first body-in-white three-dimensional mathematical model and the total arrangement parameters of the body-in-white, constructing a body-in-white parameterized analysis model; performing first performance analysis and integrated optimization on the body-in-white parameterized analysis model, and obtaining an optimal parameter value of the body-in-white parameterized analysis model after multiple times of first performance analysis and integrated optimization; obtaining second three-dimensional skeleton data of the body-in-white according to the optimal parameter value of the body-in-white parameterized analysis model; and acquiring CAS modeling data of the body-in-white, and constructing a second body-in-white three-dimensional mathematical model according to the CAS modeling data and the second three-dimensional skeleton data. According to the technical scheme, the research and development efficiency of the body-in-white is improved, and the research and development period of the body-in-white is shortened.

Description

technical field [0001] The invention relates to the technical field of vehicle body design, in particular to a method for constructing a three-dimensional digital model of a body in white. Background technique [0002] Body in White refers to the welding assembly of truck cab body structural parts and cover parts, excluding doors, engine hoods, trunk lids, and unpainted body parts excluding accessories and interior and exterior trims. CAE (Computer Aided Engineering) refers to computer-aided engineering in engineering design. Here it refers to the use of computer-aided solutions to analyze the performance of the body in white, including stiffness, strength, and crash safety performance. [0003] The body-in-white of commercial vehicles is the main carrier of the cab, and its performance has an important impact on the strength, durability, collision, and NVH of the cab. If there are related performance problems after the sale of the body-in-white, it is very likely that the ...

AI Technical Summary

Problems solved by technology

At present, in the traditional development process of the car body, the modeling stage takes up a lot of time. There are long development cycles and insufficient time for performance development. It is difficult to guarantee the performance of the body-in-white. The model design is not involved in the pre-research stage (that is, the preliminary conception stage of the product), and the pre-research time is not sufficient. Utilization and other issues have obviously failed to meet the requirements of the development and development strategy of the body-in-white under the new environment

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