Nonlinear FEA analysis Rubber gasket
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This document summarizes the nonlinear finite element analysis of a silicone rubber gasket conducted using Solidworks Simulation 2015. The analysis used nonlinear material properties and geometric nonlinearity to model the incompressible and bulging behavior of rubber under compression. The model was meshed and subjected to a 0.035 inch displacement in the -Z direction. The results showed a maximum displacement including sliding and buckling, and a maximum stress of 234 psi, which is below the material strength of 700-800 psi. Revision A changed the material to a 70 durometer silicone rubber.
Nonlinear FEA analysis Rubber gasket
- 1. Silicone Rubber Gasket Nonlinear Force Displacement Analysis 08/03/17 rev A Don Blanchet 3B Associates dwb3298@verizon.net
- 2. Analysis method Solidworks Simulation 2015 Nonlinear static analysis Nonlinear material properties Buckling geometric nonlinearity Solution is calculated 50 times at equally spaced steps
- 3. Incompressibilty Rubber compounds behave much like fluids when compressed their volume essentially remains unchanged leading to bulging behavior. Poissons ratio is set at 0.495 very close to the theoretical maximum of 0.500
- 5. Model
- 6. Meshed model
- 7. Material properties derived from published data
- 8. Loads and restraints Fixed surface Push this surface 0.035 in Z direction Loading plate
- 9. Result for - LIM6050-50 durometer
- 10. Displacement
- 11. Max displacement Including sliding & buckling
- 12. Stress Max rubber stress Including sliding & Buckling 234 psi Strength at tear 700-800 psi
- 13. Rev A Change to 70 durometer silicone rubber
- 15. Result for - 70 durometer
- 16. Result for - 70 durometer