6 results about "Sphericity" patented technology

Sphericity is a measure of how closely the shape of an object resembles that of a perfect sphere. For example, the sphericity of the balls inside a ball bearing determines the quality of the bearing, such as the load it can bear or the speed at which it can turn without failing. Sphericity is a specific example of a compactness measure of a shape. Defined by Wadell in 1935, the sphericity, Ψ, of a particle is the ratio of the surface area of a sphere with the same volume as the given particle to the surface area of the particle: Ψ=π¹/³(6Vₚ)²/³/Aₚ where Vₚ is volume of the particle and Aₚ is the surface area of the particle.