Finite Element Analysis provides data to foretell how a seal product will function beneath certain circumstances and can help identify areas the place the design may be improved without having to check multiple prototypes.
Here we explain how our engineers use FEA to design optimum sealing solutions for our customer applications.
Why will we use Finite Element Analysis (FEA)?
Our engineers encounter many critical sealing applications with complicating influences. Envelope size, housing limitations, shaft speeds, pressure/temperature rankings and chemical media are all utility parameters that we should think about when designing a seal.
In isolation, the impression of these utility parameters within reason simple to foretell when designing a sealing solution. However, whenever you compound a selection of these components (whilst usually pushing a few of them to their upper restrict when sealing) it’s essential to foretell what will occur in real application conditions. Using FEA as a tool, our engineers can confidently design after which manufacture sturdy, reliable, and cost-effective engineered sealing solutions for our prospects.
Finite Element Analysis (FEA) permits us to understand and quantify the effects of real-world conditions on a seal half or meeting. It can be utilized to identify potential causes the place sub-optimal sealing performance has been noticed and may additionally be used to information the design of surrounding parts; particularly for merchandise similar to diaphragms and boots the place contact with adjoining parts may have to be avoided.
เกจวัดแรงดันสูง allows drive data to be extracted in order that compressive forces for static seals, and friction forces for dynamic seals could be precisely predicted to help clients within the last design of their products.
How do we use FEA?
Starting with a 2D or 3D model of the preliminary design idea, we apply the boundary situations and constraints provided by a buyer; these can embody stress, pressure, temperatures, and any utilized displacements. A appropriate finite component mesh is overlaid onto the seal design. This ensures that the areas of most curiosity return correct outcomes. We can use bigger mesh sizes in areas with less relevance (or decrease ranges of displacement) to minimise the computing time required to unravel the model.
Material properties are then assigned to the seal and hardware components. Most sealing materials are non-linear; the quantity they deflect beneath a rise in pressure varies relying on how massive that drive is. This is unlike the straight-line relationship for most metals and rigid plastics. This complicates the fabric model and extends the processing time, but we use in-house tensile take a look at services to precisely produce the stress-strain material models for our compounds to make sure the evaluation is as consultant of real-world efficiency as possible.
What happens with the FEA data?
เกจวัดความดันน้ำ can take minutes or hours, depending on the complexity of the half and the range of working situations being modelled. Behind the scenes in the software program, many lots of of thousands of differential equations are being solved.
The results are analysed by our experienced seal designers to identify areas the place the design can be optimised to match the precise requirements of the application. Examples of those requirements could embrace sealing at very low temperatures, a need to minimise friction levels with a dynamic seal or the seal may have to face up to excessive pressures with out extruding; whatever sealing system properties are most necessary to the shopper and the appliance.
Results for the finalised proposal can be offered to the customer as force/temperature/stress/time dashboards, numerical knowledge and animations displaying how a seal performs throughout the evaluation. This data can be utilized as validation data within the customer’s system design course of.
An example of FEA
Faced with very tight packaging constraints, this buyer requested a diaphragm element for a valve application. By using FEA, we had been capable of optimise the design; not only of the elastomer diaphragm itself, but in addition to propose modifications to the hardware parts that interfaced with it to extend the available area for the diaphragm. This saved material stress levels low to remove any possibility of fatigue failure of the diaphragm over the lifetime of the valve.