Following the creation and import of the test geometry with the rough surfaces, thermal and mechanical loads are applied as usual in the mechanical modeling software. The geometry was meshed (100K nodes) and solved (15 s). The resulting stresses are shown in Figure 3. For comparison, an example of simulating the same general geometry using ideal structures is shown in Figure 4. The location, number, and magnitude of high stress areas are not well predicted in the idealized geometry model as compared to that with more physical rough surface modeling.
The purpose of this study was to test XFEM capabilities and qualitatively evaluate the effect of temperature changes and intrinsic stresses on crack initiation and propagation. The scalar variable chosen to compare the extent of damage in the model was STATUSXFEM [5]. For a fully cracked element the value of this variable is 1. Similarly, an element without any crack inside has a value of 0. Values between 0 and 1 suggest partial damage or crack.
ansys 14 0 magnitude cracked
In this study, harmonic response analysis of isotropic elliptically curved thin plate structures has been conducted. The structure has been excited by a harmonic load, whose maximum magnitude is 100 N. The structure has been considered under fixed from both straight edges boundary conditions. The effect of the elliptical geometry on the harmonic response of the structure in terms of the critical frequency region, phase angle, stress, and displacement has been examined. For this purpose, the vertex to co-vertex ratio has been variated from 3 to 4 by 0.1 intervals. All analyses have been performed via ANSYS Workbench by employing the Mode Superposition Method. The results indicated that the elliptical geometry has a significant impact on the harmonic response of elliptically curved thin plate structures.
Several deductive investigations indicate the probability of better performance for the influencing factors including void ratio, dimensional accuracy and drainage ability of the new octagonal structure. However, the main scope of the paper is to compare the performance of models during burnout stage (the magnitudes of exerted stresses and strains on ceramic shell). Therefore, a more analytical and practical approach will be a good future research for other mentioned factors.
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