نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه مهندسی مکانیک، دانشگاه بیرجند، بیرجند ، ایران
2 گروه مهندسی مکانیک، دانشگاه بیرجند، بیرجند، ایران
3 گروه مهندسی مکانیک، دانشکده مهندسی، دانشگاه بیرجند، بیرجند، بیرجند، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Nowadays, with the increasing number of vehicles and their high speeds, it is very important to protect passengers and goods inside them by designing of energy absorbers with high reliability during accidents. Energy absorbers prevent major damage to the vehicle body by absorbing the kinetic energy to plastic deformation and crushing. Material and geometric shape are most important effective in the performance of energy absorbers. In this study, the effect of smart functionally geometric designs of the porous cubic absorber have been investigated. The main criteria are the total and specific energy absorbed. At first, by comparing the results of the simulated model using the finite element method with experimental tests, the results are validated. Then, by applying design of experiments method, the analysis of different geometric shapes on its behavior was performed. The results obtained show that the amount and shape of porosity have a significant effect on the overall performance of the total and specific energy, and initial collapse force. For example, in case with initial diameter 3 mm and change parameter 1.2, functionally geometric can be reduced 17, 26 and 25 percent mass, total energy and initial collapse force respectively. Therefore, the amount and functionally shape of porosity have a significant effect on the overall performance of the adsorbent for low initial collapse force and high capacity of absorbent energy stimulatingly.
کلیدواژهها [English]
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