Correction method for conceptual model of vehicle body structure and application method thereof

Abstract

The invention discloses a correction method for a conceptual model of a vehicle body structure and an application method thereof. The correction method comprises the following steps of: the first step: establishing the conceptual model A of a vehicle body framework structure; the second step: getting the conceptual model A' of a vehicle body cyclic structure, which has equivalent performances with the conceptual model A of the vehicle body framework structure; the third step: getting the conceptual model B of the vehicle body cyclic structure, which corrects parameters of all joint simplified models; and the fourth step: getting the conceptual model C of the vehicle body cyclic structure, which corrects all load transfer path models. According to the correction method disclosed by the invention, by constructing the conceptual model of the vehicle body cyclic structure, the torsional rigidity of the cyclic structure is adopted as an overall performance evaluation index, and the method of getting the parameters of the joint simplified models is also adopted, so that the insufficiencies of the existing conceptual model can be effectively avoided, and the correction method can produce a significant impact on the vehicle body conceptual design method and the flow process and has important guide significance for vehicle body structure design.

Description

technical field [0001] The invention relates to a correction of a vehicle body structure conceptual model and an application method thereof, in particular to a correction method for establishing a vehicle body structure concept model, and an application method for quickly and effectively verifying a vehicle body structure design scheme by using the correction model. Background technique [0002] The body structure is the common carrier of crash safety performance and structural rigidity performance. The essence of forward development of body structure is to ensure the lightweight design under the performance target. How to achieve the lightweight design goal, the conceptual model of the body structure plays a very important role. How to effectively carry out the work in the conceptual design stage of the body structure, at present, the OEMs mainly rely on CAE technology. [0003] Literature [1] (Xu Youzhong et al. Car Body Modeling Method and NVH Optimization Analysis in the...

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Problems solved by technology

[0004] The first problem: the two conceptual models only focus on one performance and ignore the other performance, which will inevitably lead to a single evaluation standard. In fact, both performances are crucial to the lightweight design of the body structure

[0005] The second question: the concept model is a highly simplified body structure, how to ensure and improve the reliability of the body structure concept model is a crucial issue

[0007] The third problem that needs to be paid attention to is to establish a correct conceptual model of the body structure and effectively guide the engineering design. It is difficult to rely solely on CAE technology, and it is necessary to effectively combine CAE technology with body structure design ideas

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