The aim of this paper is to perform a dynamic analysis of a large industrial mixer used for mixing liquids inside a vertical tank. The analysis is performed numerically using software tools SolidWorks and Ansys for finite element method analysis. A comparative analysis of results obtained from both software platforms is presented. Although there are discrepancies in the results due to software differences, the overall results are satisfactory. The largest discrepancy was noticed in the maximum equivalent stress on
the tank roof. The structure exhibits elastic behavior under oscillating loading, keeping its integrity. While deficiencies in 3D modeling affect stress distribution, natural frequencies in software coincide with analytical calculations. Following loading, the structure settles as expected, indicating well-established dynamic analysis. Despite challenges in stress
localization, the study confirms the validity of the conducted analysis, considering the complexity of the structure.

The mechanical properties of steel structures are largely dependent on their operating conditions, with the operating temperature being a crucial factor. Welded constructions require even more attention as the welded joint and its surrounding areas are affected by changes in material during the welding process due to heat input. A study was conducted to test the base material and welded joint made of low-alloy carbon steel A516 Gr. 70 using the tensioning method at five different temperatures for the base material and one temperature for the welded joint. The results and comparative analysis were presented in graphical form in the article, and data analysis was carried out to draw conclusions. The study confirmed the wide range of applications of this type of steel and the reliability of structures made from it. The findings of this study can help engineers and designers to better understand the behavior of steel structures under different operating conditions and make informed decisions regarding their use in specific applications.

The main focus of this paper is to present the TQM practices of 593 companies in Bosnia and Herzegovina. In addition, our results confirm that there are statistically significant differences in TQM practices between firms in a highly competitive and less competitive environment, as well as between firms with and without ISO certificates. TQM practices do not differ between companies that belong to different groups that we constructed based on their age, location, export-orientation and the firm size. We contribute to the existing body of knowledge by identifying organizational contextual factors that might matter in designing more complex structural models.