Analysis of a piping system due to pressures and temperatures. Different types of stress were reported for the pipework, including hoop, longitudinal and principal stress. From the results areas of interest or concern were highlighted within the assembly.
Pipe stress analysis of various sections of a steel plant water supply, subjected to loads including weight, pressure, thermal expansion and water hammer. Based on the results, diameters, wall thicknesses and supports were modified. Due to the complexity of the loads, it took up to 4 iterations to achieve a satisfactory design.
Linear Static stress and modal analysis of a roller assembly, with non-linear contact. The model was subject to dead weight for the stress analysis. Two designs were analysed, with and without a solid base plate. For the model with the base plate, both a solid element model and a plate element model were analysed in the modal analysis. For the stress analysis, the stresses in the model were well below yield.
Linear Static Stress analysis of a pressure vessel due to pressures and temperatures. Two different initial designs were analysed, with different attachment points of a mixer sub assembly. In total 5 load cases were analysed for each design. A half model was used in the analysis. Based on recommendations given, modified designs were analysed, and the design passed the acceptance criteria given in the EN standard.
Modal and linear static stress analysis with non-linear contact of a mirror housing and bracket. A modal analysis was conducted on the first design. Upon modification of the design, a modal and stress analysis was performed. From the first to second design, the natural frequencies increased, and the maximum stresses were below the yield strength of the materials.
Transient heat transfer and non-linear static stress analysis of a furnace assembly, using a 2D axisymmetric model. 4 different designs were analysed. The temperatures evaluated as part of the transient heat transfer analyses were used as inputs for the stress analysis. Despite the designs meeting the acceptance criteria, recommendations were made to consider other operating conditions in future analyses.
Structure has been initially analysed by Indian consultant, but prototype was much more flexible than predicted. Our FEA exactly replicated the physical deformation measurements and resulted in detailed advice on how to achieve the required stiffness and to improve strength.
Linear static stress analysis and buckling analysis of an avionics rack on a chinook. Beam and plate elements were used to represent the geometry. 6 acceleration directions were inputs for the stress analysis, and 5 for the buckling analysis. This was completed for 2 variations of an initial design, before a modified design was also analysed, based on recommendations given from the initial design. It was concluded that the modified design was acceptable as stresses were below the allowables.
Linear static stress analysis with non linear contact of a launcher framework. Multiple load cases were analysed with different load combinations. Some of the framework’s brackets were analysed as submodels separately, to gain greater insight into the stresses on these components. The minimum Factor of Safety was reported for each load case, showing areas that needed modification.