Rubber Sandwich Large Displacement Compression

This module will estimate the nonlinear large displacement compression stiffness for rubber pads using a nonlinear FEA method. Cylindrical, conical and curved conicals can be modeled with user input ID, OD, height, and OD and ID edge contours. The top and bottom surfaces can be bonded to rigid members or free. A deformed plot with the rz shear stain plots is also given.

Details (inputs, outputs, assumptions) Read once

Model summary

Inputs: Sandwich general configuration and geometry details of OD, ID and height. Material properties and compression value.

Inputs: Material properties of shear modulus and bulk modulus.

Inputs: FEA mesh details and surface boundary conditions.

Inputs: Applied compression value.

Inputs hint: The FEA mesh will have to be tailored to the compression value. Compression values < 10% are recommended for configurations with a center hole. Without a center hole much larger % comporessions will work.

Outputs: Linear and nonlinear compression stiffness options, shape and shear strains.

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

Examples

Example of a contoured rubber sandwich.

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