- #1
Fn4
- 1
- 0
Hello,
I was wondering if some one would be able to check my thought process on this.
I have an object ( a boat) which I'm only able to calculate the tensors of the volume moment around its volume centroid. If i assume that the object has a uniform density ( which it does not, just bear with me here), and i multiply the density by the volume moments tensors ( L^5 X M/L^3 = ML^2) it will give me the mass moments tensors. And If i use the parallel axis theorem https://en.wikipedia.org/wiki/Parallel_axis_theorem and the tensor generalization to shift the location to the CG, would this give me a a fairly accurate value for the Mass moment tensors about the CG ( even though the boat does NOT have uniform density)??
And one last thing, is the Ri and Rj in the tensor generalization formula vectors or just magnitudes?
Best
Fn4
I was wondering if some one would be able to check my thought process on this.
I have an object ( a boat) which I'm only able to calculate the tensors of the volume moment around its volume centroid. If i assume that the object has a uniform density ( which it does not, just bear with me here), and i multiply the density by the volume moments tensors ( L^5 X M/L^3 = ML^2) it will give me the mass moments tensors. And If i use the parallel axis theorem https://en.wikipedia.org/wiki/Parallel_axis_theorem and the tensor generalization to shift the location to the CG, would this give me a a fairly accurate value for the Mass moment tensors about the CG ( even though the boat does NOT have uniform density)??
And one last thing, is the Ri and Rj in the tensor generalization formula vectors or just magnitudes?
Best
Fn4