Vehicle model verification system and method for guardrail safety performance evaluation

Abstract

The invention discloses a vehicle model verification system and method for guardrail safety performance simulation evaluation. By using finite element method computer simulation as a technical means,the method simplifies an actual vehicle and establishes and verifies a vehicle model in a computer analogue simulation system; therefore, whether the highway guardrail structure reaches a corresponding protection level can be accurately reflected and evaluated. Specifically, a sub-component model, a whole vehicle model and a vehicle model before and after the whole vehicle collision are tested andverified through a sub-component test module, a whole vehicle test module and a whole vehicle collision test module respectively, so that the accuracy, numerical stability and effectiveness of the vehicle model are ensured. The test verification of the vehicle model is beneficial to realizing standardization and normalization of the guardrail safety performance simulation system, is a basic guarantee for scientific research technicians to accurately determine the guardrail safety performance, and is also a basic basis for owners and supervisors to check and accept the guardrail design and usesafety performance.

Description

technical field [0001] The invention relates to the technical field of detection and evaluation of highway guardrail safety performance based on computer simulation, in particular to a vehicle model verification system and method for safety performance evaluation of guardrails. Background technique [0002] As the last line of defense for vehicles in accidents, highway guardrails are of paramount importance to their safety. The current "Highway Guardrail Safety Performance Evaluation Standard" (JTG B05-01—2013) stipulates that the method and evaluation index of the full-scale collision test of the real vehicle should be used to detect the highway guardrail. It is a basic requirement to ensure the authenticity and objectivity of the crash test, and it has played an important role in improving the safety of road traffic in our country. [0003] With the continuous development of computer software and hardware technology, the computer simulation technology based on the finite ...

AI Technical Summary

Problems solved by technology

[0005] In the existing computer simulation highway guardrail safety performance evaluation system, the modeling of the vehicle model is relatively rough, and the reasonable reliability verification of the modeling has not been carried out, so it is impossible to accurately simulate and predict the vehicle after the collision between the vehicle and the guardrail. Deformation, causing guardrail design and security departments to have doubts about the simulated guardrail model collision results and real protection capabilities

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