Ride-on Suspension

Fatigue Analysis of a Ride-on Suspension

Geometry

Geometry made within the PTC Creo. And loaded within the ANSYS AIM.

Mesh

Now this is a basic representation of how a coarse mesh and a fine mesh can make a difference. Thus basically the representation will be shown on the right and the left where the right side will have the fine mesh and its results and the left side will have the coarse mesh and its results.

Coarse Mesh

Fine Mesh

Physics Solutions

Here the Material is Structural Steel and the Constraints are loaded as:

Pressure caused by the Horse which is downwards with the magnitude of 10 Psi.

Pressure caused by the Kid is 50 Psi total upon the two surfaces.

Here the geometry is Fixed Supported

Results

Displacement Magnitude

Displacement Magnitude for the coarse mesh where the maximum displacement is 445.2 in with the minimum as 0 in.

Displacement Magnitude for the fine mesh where the maximum displacement is 461 in with the minimum as 0 in.

Fatigue Damage

Fatigue Damage for the coarse mesh for which the maximum as 1 with the minimum as 1e32.

Fatigue Damage for fine meshfor which the maximum as 1 with the minimum as 1e32.

Fatigue Life

Fatigue Life for the coarse mesh where the maximum is 1e6 and the minimum 0.

Fatigue Life for the fine mesh where the maximum is 1e6 and minimum 0.

von Mises

von Mises Stresses for the coarse mesh where maximum displacement value is 9.5e5 Psi with the minimum as the 6.4e-9 Psi.

von Mises Stresses for the fine mesh where the maximum displacement value is 9.6e5 Psi with the minimum as the 2.6e-10 Psi.

Thus, yes Mesh can have a huge difference. In this analysis we had the mesh which were quite equally dense due to which the values for the results were quite the same, however he importance of the mesh is still note worthy.

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