VALIDATION OF FOAM FILLED TUBE MODEL AND OPTIMIZATION RESULT USING WEIBULL DISTRIBUTION

Abstract

PASSENGER SAFETY, AND LOW FUEL CONSUMPTION RATE, ARE THE MOST IMPORTANT FACTORS THAT NEED TO BE CONSIDERED WHEN DESIGNING MODERN VEHICLES. THEREFORE, THIS STUDY VALIDATES THE CRASH BEHAVIOR AND OPTIMUM VALUES OF FOAM-FILLED VEHICLE STRUCTURES UNDER THE DYNAMIC OBLIQUE IMPACT, USING THE WEIBULL DISTRIBUTION. THE OPTIMIZATION METHOD AIMED TO ABSORB MAXIMUM ENERGY WITH MINIMUM PEAK CRUSHING FORCE. FURTHERMORE, THE METAMODEL AND OPTIMIZATION TECHNIQUES SUCH AS RBF AND NSGA-II WERE USED TO ENSURE ACCURATE VALIDATION OF THE WEIBULL DISTRIBUTION METHOD. THE RESULT SHOWED THAT THE FINITE ELEMENT MODEL IS COMPARABLE TO THE EXPERIMENTAL DATA IN THE REFERENCE, WHILE THE METAMODEL METHOD, WHICH IS DIRECTLY VERIFIED, AFFECTS OPTIMIZATION RESULTS. THE WEIBULL DISTRIBUTION METHOD SHOWS THAT THE OPTIMUM VALUE AND THE SIMULATION HAVE GOOD ACCURACY OR R²> 0.85.