Rubber Tubeform

This module will estimate the state of cure, molding shrinkage and axial stiffness for rubber tubeforms. Various shapes can be modeled. A deformed plots with the rz shear stain plots are also given. A FEM solution is used.

Details (inputs, outputs, assumptions) Read once

Model summary

Inputs: Tubeform general configuration and geometry details including OD and ID. Edge contours. Material properties and molding temperature.

Inputs: Material properties of shear modulus, tan δ and thermal coefficient of thermal expansion. Curing parameters. Molding and room temperatures.

Boundary Conditions: Fixed or free surfaces.

Outputs: Molded shape, state of cure, axial stiffness and shear strains. Static and dynamic stiffness is given.

Hint: A configuration and results can be saved to a JSON file for future use.

Use case: quick what-ifs, sensitivity, and early sizing.

Examples

Example of a contoured rubber tubeform.

Preliminary estimates only. Verify independently for critical applications. See Terms.