fa موتور احتراق داخلی Internal Combustion Engines (ICE, ...) پژوهشي Research Due to the extensive use of cars and progresses in the vehicular industries, it has become necessary<br> to design vehicles with higher levels of safety standards. Development of the computer aided design and<br> analysis techniques has enabled employing well-developed commercial finite-element-based crash<br> simulation computer codes, in recent years. The present study is an attempt to optimize behavior of the<br> structural components of a passenger car in a full-frontal crash through including three types of energy<br> absorptions: (i) structural damping of the car body, (ii) viscoelastic characteristics of the constituent<br> materials of the bumper, and (iii) a proposed wide tapered multi-cell energy absorber. The optimization<br> technique relies on the design of experimental (DOE) method to enables finding the absolute extremum<br> solution through the response surface method (RSM) in MINITAB software. First, the car is modeled in<br> PATRAN and meshed in ANSA software. Then, the full-scale car model is analyzed in ABAQUS/CAE<br> software. The optimization has been accomplished through a multi-objective function to simultaneously,<br> maximize the observed energy and minimize the passenger&rsquo;s deceleration. Results are verified by the<br> experimental results and effects of using non-equal importance coefficients for the absorbed energy and<br> passenger&rsquo;s deceleration in the multi-objective function are also evaluated. Influence of the optimized<br> parameters on the frontal crash behavior of the vehicle body structure and passenger&rsquo;s deceleration is<br> investigated, too. Multi-objective optimization, Crash safety, Design of experiment, Energy absorption 2447 2464 http://ase.iust.ac.ir/browse.php?a_code=A-10-315-2&slc_lang=fa&sid=1 M. Pasandidehpour 180031947532846002446 180031947532846002446 Yes M. Shariyat 180031947532846002447 180031947532846002447 No