نتایج جستجو برای: energy absorption performance
تعداد نتایج: 1752405 فیلتر نتایج به سال:
Fillers can be employed as reinforcement in the design of automobile crash boxes to improve its performance in terms of energy absorption, expected crushing fashion and initial peak force magnitude. The current research focuses on the investigation of crashworthiness of the high-strength steel (HSS) columns filled with reinforced aluminium honeycomb fillers. The crashworthiness of HSS steel cra...
a mathematical model of a continuous reheating furnace has been developed to identify the design and operating parameters that significantly affect furnace performance. in this study, the furnace is modeled 3 dimensionally and themonte carlomethod is used to find the overall absorption factor. the overall absorption factor is then used to calculate the energy balance for furnace walls, the gas,...
Although solar energy is one of the most important renewable energies in Iran that most areas of the country, especially the Central Desert, have considerable ability to use, but the random nature of this type of energy makes it difficult to predict its output power and may cause problems in the performance of the feed systems. For this reason, the use of energy storage systems for periods of l...
the numerical investigation of computing the rate of radiated solar-energy requires equations as a function of solar-time according to the radiation angle of the sun (β) in the latitude 37°n and the shape. this paper implements the lagrange interpolation to obtain the equations of normal diagram of elements based on data obtained from surveying. also the method of hann-window equation used to e...
human body consists of some tissues among which bone is one of the important living and growing tissue . in this research, energy absorption buildup factor (eabf) values of 27 types of bone have been computed for photon energy 0.03 to 1.5 mev up to 40 mean free path (40mfp) penetration depths. the inner bone tissue, spongiosa and male sternum had the largest values of eabf in low photon energie...
This research is concerned with weighing the behavior of the front end energy absorption system of a locally manufactured locomotive in crash situations. The causes of the extensive damages to the energy absorption apparatus that includes the crash element and the buffer are studied. By choosing the proper damage model the conditions of the accident is simulated by using the ABAQUS engineering ...
Abstract Energy absorption performance has been a long-pursued research topic in designing desired materials and structures subject to external dynamic loading. Inspired by natural bio-structures, herein, we develop both numerical theoretical models analyze the energy behaviors of Weaire, Floret, Kagome-shaped thin-walled structures. We demonstrate that these bio-inspired possess superior capab...
assessing the behavior of composite structures which are subjected to impact loads is one of the important subjects in the field of mechanical sciences. using thin-walled tubes which collapsed and absorbed the impact energy is a well-known method to prevent damages to the other parts of the structures. in this paper, deformations, crushing length, peak load, mean force and energy absorption cap...
Abstract The crash box’s internal structure can be designed to absorb more energy in a significant way. Using the finite element method, this paper investigates with negative Poisson ratio and self-torsion effect. arrangement combination of eight structures have torsional that is negative. optimal absorption LCHC-B structures, as determined by simulation analysis, results an excellent performan...
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