Donut-shaped elastic torus and its cross-section.

Geometry-induced rigidity in elastic torus from circular to oblique elliptic cross-section - ScienceDirect

Takahiro TOMIOKA, Professor (Full), Doctor of Engineering, Akita Prefectural University, Akitashi, Department of Mechanical Engineering

evolution - What would the problems with / consequences of a torus shaped planet be? - Worldbuilding Stack Exchange

Solved A torus with radii r and R is a donut-shaped solid as

Takahiro TOMIOKA, Professor (Full), Doctor of Engineering, Akita Prefectural University, Akitashi, Department of Mechanical Engineering

Solved A torus is a donut-shaped geometrical object with an

Torus - Wikipedia

Can one calculate the volume of a torus by pretending it's a cylinder? - Quora

3 - O-Ring Basics - Apple Rubber Products Inc.

Geometry-induced rigidity in elastic torus from circular to oblique elliptic cross-section - ScienceDirect