13th International Conference on Fracture June 16–21, 2013, Beijing, China -4- 3.1. static stress analysis of B630Q balance This paper analyzed the B630Q wind tunnel balance by finite element analysis. We modeled the balance after the theoretic analysis of this balance. After that, meshing the model was conducted by the software. We can conclude from the meshing contour that the compute node is 172545 and the number of element is 105639. Meshing results of B630Q balanc was showed in figure3. Figure4 showed the contact region of the balance and loading equipment. Figure 3. meshing results of the balance Figure 4. Contact Region The processing was conducted after the process of meshing the model was completed. The static stress contour and dangerous sections were obtained after six component’s load was imposed on the balance and also the integrative load. Figure 5 showed the stress contour of that the six component rated load was loaded integrative. We can conclude that the maximum stress was only 410.7MPa which was lower than the tensile ultimate strength and the location was lie on the root of the supporting beam. Figure 6 showed the each life contour of six components’s loading. These figures informed that the dangerous sections were in the root of the supporting beam and the root of the axial force element indeed. Figure5. Contour of stress
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