Masters student in Mechanical Engineering at Northeastern University
Overview and Aim
This was done as a part of edx.com online course to gain more knowledge about Finite Element Analysis and use of ANSYS software. In this, static analysis of bike crank and a bolted flange of a rocket nozzle is analysed in ANSYS 17 workbench
Bike crank and bolted flange Static Structural Analysis
The static analysis of the bike crank is done by size of the element as 0.2 in and the solving method is Multi zoned and then Displacement and the stress in the X-direction are calculated.
The calculated values are verified with the hand calculation
The figure on the right shows the mesh generated in ANSYS of the crank
The figure on the left shows the Displacement plot of the crank with the boundary conditions applied
The figure on the right shows the stress along X-direction plot of the crank with the boundary conditions applied
The static analysis of the nozzle is done by taking the size of the elements for the body as 0.3 in and the size of the elements for the bolt and nut as 0.075 in and the method used for solving is the Hexa Dominant
Description
Analyzing the bolted joint by non linear finite element model in ANSYS. Finding the failure criteria of the bolted flange is the main objective of this problem
The entire problem is simplified by taking only 0.9 degree slice of the entire nozzle
The figure on the left shows the meshed part of the 0.9 degree slice of the entire nozzle
The total deformation of the entire body and the gap between the two nozzles are simulated and calculated in ANSYS, to interpret the simulated results these are compared with the hand calculations
The below figures shows the simulated results of total deformation and the gap between the bolted nozzle
Total Derformation of the entire body
Gap between the two bolted nozzle parts considering preload of bolt
Gap between the two bolted nozzle parts considering preload and pressure
Total Gap between the two bolted nozzle parts considering preload, pressure and thermal expansion
The figure on the right shows the force convergence of the ANSYS solver