2018
DOI: 10.1177/0954407018755844
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Lightweight optimization of the front end structure of an automobile body using entropy-based grey relational analysis

Abstract: This study deals with the multi-objective lightweight optimization of the front end structure of an automobile body, as the main assembly to withstand impact force and protect occupants from injuries in frontal collision, based on entropy-based grey relational analysis (EGRA). First, basic noise, vibration, and harshness (NVH) models of the automobile body and crashworthiness models of the vehicle are established and then validated by corresponding actual experiments; hence the lightweight controlling quotas a… Show more

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Cited by 30 publications
(11 citation statements)
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“…With a greater difference in response values, more information is provided, and a greater weight is assigned [29][30]. The weight calculation method based on the entropy value is as follows:…”
Section: Grey Relational Analysis With Entropy Weightsmentioning
confidence: 99%
“…With a greater difference in response values, more information is provided, and a greater weight is assigned [29][30]. The weight calculation method based on the entropy value is as follows:…”
Section: Grey Relational Analysis With Entropy Weightsmentioning
confidence: 99%
“…With the development of the automotive industry and the large-scale application of engineering plastics, bumpers, as important safety devices, have been subject to innovation. In addition to maintaining the original protective function of front and rear bumpers, pursuing harmony with the body shape and achieving light weight have also become crucial goals [2].…”
Section: Introductionmentioning
confidence: 99%
“…At present, most scholars only consider the collision safety of the body for lightweight research. In [4], Xiong studied the multi-objective lightweight optimization problem of the front impact structure of the automobile body. The crashworthiness model of the vehicle was established by taking the thickness of the automobile body and the materials as the design variables.…”
Section: Introductionmentioning
confidence: 99%
“…In this method, the inconsistency of linking variables among subsystems is taken as the constraint condition. The inconsistency between systems is represented by the deviation of the linking variable γ between levels after each iteration, as shown in Equation (4).…”
Section: The Introduction Of Dynamic Relaxation Factor In Atcmentioning
confidence: 99%