Research On Foamed Aluminum Filling Impact Beam Of Automobile Door

With improving of the auto possession, the safety performance of car is concernedby people increasingly; the new and effective energy absorption using material in the carbody structure to replace the traditional materials which can improve the safetyperformance of car has become a trend. Foamed aluminum is a new type porous materialwhich has good energy absorption characteristic, at the same time it also has lightweight, corrosion resistance, damping property, sound absorption property, high specificstrength and high specific rigidity etc. Using foamed aluminum material applied to theautomobile body impact parts, can improve the safety performance of the car throughadvancing energy absorption effect.Taking the car door impact beam as the study object, in which filling the foamedaluminum materials, forms a new energy absorption structure. Then using theoreticalanalysis method to analyze the response and deformation of the filling foamedaluminum impact beam in quasi static and dynamic respectively, and get the losteffectiveness calculation formula. And then we can analyze its energy absorptioncharacteristics, and conclude the foamed aluminum filling impact beam energyabsorption and energy absorption ratio calculation formula in two kinds of condition.Then with Hyperworks software as before and after processor, LS-DYNA as solver wecan do the numerical simulation. Under quasi static load and impact load function, wecan get the corresponding response and deformation of the foamed filling aluminumimpact beam, and draw a conclusion of the observation node stress strain curve andenergy absorption curve. After that we contrast the numerical simulation results and thesecond chapter concludes which calculated by calculation formula. The results show thatthey are almost consistent. On the theory analysis and numerical simulation, usingfoamed aluminum filling impact beam as a new kind of car door impact beam, applied toautomobile door system, and the door system for car side impact simulation and rigidpost crash simulation, and the corresponding to ordinary impact beam collisionsimulation. By comparing the numerical simulation results, we can prove that the impactbeam energy absorption performance improved after filling foamed aluminum. Finallywe do the optimization of the impact beam structure with foamed aluminum filling structure, and contrast with the impact beam before optimize, and the results show thatthe optimized impact beam comprehensive performance improved.