In UCTM Example 3 Веселин Илиев Thermal Stresses in АNSYS Workbench 10.0 This material is designed for reminding of the subject, studied in the course.

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in UCTM Example 3 Веселин Илиев Thermal Stresses in АNSYS Workbench 10.0 This material is designed for reminding of the subject, studied in the course. The explanation of the some simple operations is skipped here, so the material is not appropriate for unaided use. Even precise implementation of the instructions can cause results, different from described here. For additional information write to Analysis – linear, steady-state conductivity, thermal stresses Geometry – medium complexity Materials – Copper Alloy and Structural Steel from the Ansys Workbench Library Load – thermal, steady-state

Description Copper Alloy pipe is supported by steel bolted bracket. The temperature of the one end of the pipe is raised from 25 о С to 120 о С. The temperature of the other end is permanently 25 о С. The geometrical model of the pipe can be downloaded from The aim is to determine the stress and strain in the nut bolt, caused by thermal expansion of the pipe. by clicking here.

- Geometrical model importing

- The pipe material changing All parts of the model are defined as Structural Steel from program library. The pipe material will be changed in Copper Alloy here. Clicking around wile the part desired changes color. Switching over “Import Material” Choose the material (Copper Alloy) from the list.

- Defining of the contact surface conductivity As the solution is steady state, if the surface conductivity at contact between the pipe and the bracket exists, the uniform thermal expansion in the assembly is formed. In this case there isn’t thermal stresses. In this example is expected the surface conductivity to be interrupted by applying extremely small value (1е-10) of the contact thermal conductance. Switching over manual control of the thermal conductance value. Clicking around wile the contact surface desired changes color.

- Examination of the mesh

- Applying of the load (120 о С at the left end of the pipe)

- Applying of the load (25 о С at the right end of the pipe)

- Defying of the results expected for the assembly

- Defying of the results expected for the nut bolt When the results are displayed, the characteristics (minimum value, maximum value, color contours) refer to value in assembly. To specify the results for particular element, this must be announced in advance

- Complete of the calculation

- RESULTS Temperature distribution in the assembly

- RESULTS Strain distribution in the assembly For better view the deformed shape is overstated If it is necessary, the strains can be displayed in the real size.

- RESULTS Stress distribution in the assembly

- RESULTS Stress distribution in the nut

- RESULTS Stress distribution in the bolt