Finite Element Simulation Method for Hand Feel Analysis and Fatigue Life Prediction of Silicone Elastomer

Abstract

The invention discloses a finite element simulation method for handle analysis and fatigue life prediction of silicone elastomer. The method includes the steps of subjecting a pressure head, the silicone elastomer and a PET (polyethylene glycol terephthalate) film to geometric modeling, converting a geometric model into a finite element model, applying constraint and load to the finite element model, defining a contact mode, and performing meshing; performing solving and calculating after setting an output option, and extracting a load-time curve and a travel-time curve to obtain a handle curve; resetting the output option, and performing solving again to obtain stress strain data of the silicone elastomer; extracting a stress value, setting and entering parameters into software PE-safe, and defining output data; performing calculating and solving, and guiding solving results back into software Abaqus to obtain cloud picture life and stress distribution area data. The method has the advantages that the handle and life of the silicone elastomer can be simulated and analyzed accurately and comprehensively, structural design optimization is achieved for silicone elastomer products, development and experiment periods and development and experiment expenditures are greatly saved.

Description

technical field [0001] The invention relates to a finite element simulation analysis method, in particular to a finite element simulation method applied to the hand feeling analysis and fatigue life prediction of button silicone elastic body. Background technique [0002] Silicone rubber elastic components are more and more widely used in automobiles, electronic products and other fields, and their research and development work has also developed rapidly. The traditional development process of silicone rubber elastic components is: sequentially carry out product design, open molds to manufacture samples, and test samples , Continuously modify the mold, and finally adjust the product to meet the requirements. This kind of development process results in a long development cycle for silicone elastic components (especially the life test time), high R&D and experiment costs, and high risk in work. Existing numerical simulation The analysis is not accurate enough, and due to the c...

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Problems solved by technology

[0002] Silicone rubber elastic components are more and more widely used in automobiles, electronic products and other fields, and their research and development work has also developed rapidly. The traditional development process of silicone rubber elastic components is: sequentially carry out product design, open molds to manufacture samples, and test samples , Continuously modify the mold, and finally adjust the product to meet the requirements. This kind of development process results in a long development cycle for silicone elastic components (especially the life test time), high R&D and experiment costs, and high risk in work. Existing numerical simulation The analysis is not accurate enough, and due to the complexity of silicone rubber and the influence of many variable factors, it is very difficult to optimize the product structure design. It is time-consuming and expensive to use the method of continuous mold repair simply relying on experiments and operating experience. Limitations, it is difficult to meet the current high-quality pursuit of silicone elastic components

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