Study of Tank Containers for Foodstuffs

Abstract

In this study, we examined a tank container for foodstuff that is generally used for the transport of foodstuffs. With the aid of the “ANSYS R17.0” program code, a numerical model of the tank container for foodstuffs was realized. Further, to validate the considered model, the tank container considered was submitted to the most important ISO tests concerning both its support frame and the tank. The results obtained from the FEM analysis, in terms of displacement for each test, were compared with those provided by the manufacturer and related to the tank container considered, evaluating the difference between the numerical results with the experimental ones. This allowed us to validate the model examined. Furthermore, the results obtained from each test, in terms of stress, have made it possible to locate the areas with the highest equivalent stress and quantify the maximum value, comparing it with the allowable stress. In this way, a better understanding of the structure was achieved, and it was detected that the most stressed area is that of the connections between the container and the frame. Furthermore, modal analysis was carried out, in which the natural frequencies relating to the most dangerous modes of vibrations were found, that is, with the lowest frequency values. Finally, changes for the considered tank container were examined, and it was found that, by changing parameters, such as the thickness of the plate and skirt, and subsequently acting on the arrangement of the corner supports, the highest value of the stresses generated by the loads related to the ISO tests, it is significantly lowered, resulting in a better distributed stiffening of the structure and a reduction, although minimal, of weight. It is evident that this modeling and validation method, suitably integrated by further calculation modules, can be used in an iterative optimization process.

Multibody Analysis of Sloshing Effect in a Glass Cylinder Container for Visual Inspection Activities

“…The incompressibility of the liquid; With this model, only the fundamental oscillation mode (mode 1) is adequately described, which, among the various j-th modes, is the one with the lowest frequency and characterized by the most significant amplitude (see Figure 2a). In the literature, it has been demonstrated experimentally that the influence of the other higher frequency modes is not particularly significant, and therefore, their inclusion in the model would lead to excessive complications in the control system [23,24]. What has been described is valid exclusively for symmetrical containers concerning a single axis.…”

Modeling an Industrial Robotic Manipulator in the Electromechanical Domain

“…There are several types of control, the most used consists of using a proportional derivative controller, which is also considered for the development of the robotic arm presented in the following paper [17,18]. Other control techniques have been proposed in the literature [19,20]. The one that most closely resembles the one previously mentioned is the design of a PID (Proportional Integrated Derivative) controller with fuzzy logic [21,22].…”