Finite Element Analysis supplies data to predict how a seal product will function underneath sure situations and might help determine areas where the design could be improved with out having to check multiple prototypes.
Here we clarify how our engineers use FEA to design optimal sealing solutions for our buyer applications.
Why will we use Finite Element Analysis (FEA)?
Our engineers encounter many important sealing functions with complicating influences. Envelope measurement, housing limitations, shaft speeds, pressure/temperature scores and chemical media are all software parameters that we must contemplate when designing a seal.
In isolation, the influence of those software parameters within reason simple to predict when designing a sealing resolution. However, whenever you compound numerous these components (whilst often pushing a few of them to their upper limit when sealing) it is crucial to foretell what will happen in real application conditions. Using เกจวัดแรงดันออกซิเจน as a device, our engineers can confidently design after which manufacture robust, dependable, and cost-effective engineered sealing solutions for our prospects.
Finite Element Analysis (FEA) permits us to grasp and quantify the results of real-world circumstances on a seal half or assembly. differential pressure gauge ราคา can be utilized to identify potential causes where sub-optimal sealing performance has been noticed and can additionally be used to guide the design of surrounding parts; particularly for products corresponding to diaphragms and boots where contact with adjoining parts might must be averted.
The software additionally permits drive knowledge to be extracted in order that compressive forces for static seals, and friction forces for dynamic seals may be precisely predicted to assist clients within the ultimate design of their products.
How will we use FEA?
Starting with a 2D or 3D model of the initial design idea, we apply the boundary conditions and constraints supplied by a buyer; these can include strain, drive, temperatures, and any utilized displacements. A suitable finite factor mesh is overlaid onto the seal design. This ensures that the areas of most interest return correct results. We can use larger mesh sizes in areas with less relevance (or lower levels of displacement) to minimise the computing time required to resolve the mannequin.
Material properties are then assigned to the seal and hardware components. Most sealing materials are non-linear; the quantity they deflect underneath an increase in pressure varies relying on how massive that drive is. This is unlike the straight-line relationship for many metals and rigid plastics. This complicates the material mannequin and extends the processing time, however we use in-house tensile test facilities to precisely produce the stress-strain material fashions for our compounds to ensure the analysis is as representative of real-world performance as potential.
What happens with the FEA data?
The evaluation itself can take minutes or hours, depending on the complexity of the half and the range of operating situations being modelled. Behind the scenes within the software program, many lots of of thousands of differential equations are being solved.
The results are analysed by our experienced seal designers to establish areas the place the design could be optimised to match the specific necessities of the applying. Examples of those requirements could include sealing at very low temperatures, a need to minimise friction levels with a dynamic seal or the seal may need to face up to high pressures with out extruding; whatever sealing system properties are most important to the customer and the applying.
Results for the finalised proposal may be presented to the customer as force/temperature/stress/time dashboards, numerical knowledge and animations exhibiting how a seal performs throughout the evaluation. This data can be utilized as validation information within the customer’s system design course of.
An instance of FEA
Faced with very tight packaging constraints, this customer requested a diaphragm part for a valve application. By using FEA, we have been capable of optimise the design; not only of the elastomer diaphragm itself, but also to propose modifications to the hardware parts that interfaced with it to increase the obtainable area for the diaphragm. This stored material stress ranges low to take away any chance of fatigue failure of the diaphragm over the life of the valve.
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