FEA (Finite element analysis) is a computer aided analysis method. Combining computer aided design software, conform to be CAE (Computer Aided Engineering). CAE can predict sealing performance so that the improvements to the seal design involving either seal geometry or materials can be estimated and enhanced prior to manufacturing the actual prototypes. (Figure 1)

This process minimizes product development time and testing costs by eliminating most of the trial and error of design development. CAE also provides an understanding of the factors that influence the design of seals. One of the key issues in computer simulation is material modeling for CAE, which requires extensive material testing, processing curve fitting to obtain required material constants. CAE contact force profiles, loading characteristic, and stress distributions are some of the key factors in the evaluation of multiple designs.

We are able to perform comprehensive evaluations under multiple environments, including time and temperature dependencies, for our proprietary materials. We are successfully using CAE to reduce product development cycles for our new sealing designs. Parameters for design such as seal geometry, interference, and squeeze can be varied, and the model can be re-analyzed until an acceptable design is achieved.

For example, the function of AP type seal is to prevent the mud entering the internal part of agriculture machinery. Due to AP type is combined in multiple components; we can have more understanding about the combination state of the seal, contact normal force, contact width, and the compatibility between the seal and the mating part, shaft and bore, through CAE. (Figure 2, Figure 3).