Finite Element Analysis supplies knowledge to foretell how a seal product will operate beneath sure circumstances and might help identify areas the place the design may be improved without having to check a number of prototypes.
Here we clarify how our engineers use FEA to design optimal sealing options for our buyer functions.
Why can we use Finite Element Analysis (FEA)?
Our engineers encounter many critical sealing functions with complicating influences. Envelope dimension, housing limitations, shaft speeds, pressure/temperature rankings and chemical media are all application parameters that we must consider when designing a seal.
In เพรสเชอร์เกจน้ำ , the impression of these software parameters is reasonably easy to predict when designing a sealing solution. However, whenever you compound numerous these components (whilst typically pushing some of them to their higher limit when sealing) it’s essential to predict what goes to happen in actual application conditions. Using FEA as a software, our engineers can confidently design after which manufacture robust, reliable, and cost-effective engineered sealing solutions for our clients.
Finite Element Analysis (FEA) allows us to understand and quantify the results of real-world situations on a seal half or meeting. It can be utilized to determine potential causes the place sub-optimal sealing performance has been observed and can additionally be used to guide the design of surrounding components; particularly for merchandise similar to diaphragms and boots where contact with adjacent elements could must be prevented.
The software program also permits force data to be extracted so that compressive forces for static seals, and friction forces for dynamic seals could be precisely predicted to assist clients within the ultimate design of their products.
How do we use FEA?
Starting with a 2D or 3D mannequin of the preliminary design concept, we apply the boundary situations and constraints supplied by a buyer; these can include pressure, pressure, temperatures, and any applied displacements. A appropriate finite element mesh is overlaid onto the seal design. This ensures that the areas of most interest return accurate outcomes. We can use larger mesh sizes in areas with less relevance (or lower levels of displacement) to minimise the computing time required to unravel the model.
Material properties are then assigned to the seal and hardware elements. Most sealing supplies are non-linear; the amount they deflect beneath an increase in force varies depending on how giant 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, however we use in-house tensile check facilities to accurately produce the stress-strain material models for our compounds to ensure the evaluation is as consultant of real-world performance as attainable.
What occurs with the FEA data?
The analysis itself can take minutes or hours, relying on the complexity of the half and the range of working conditions being modelled. Behind the scenes within the software, many lots of of thousands of differential equations are being solved.
The results are analysed by our skilled seal designers to establish areas where the design can be optimised to match the specific necessities of the application. Examples of those requirements may 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 excessive pressures with out extruding; whatever sealing system properties are most essential to the shopper and the application.
Results for the finalised proposal can be introduced to the client as force/temperature/stress/time dashboards, numerical knowledge and animations showing how a seal performs all through the analysis. This info can be utilized as validation information within the customer’s system design course of.
An example of FEA
Faced with very tight packaging constraints, this customer requested a diaphragm element for a valve software. By utilizing FEA, we had been capable of optimise the design; not only of the elastomer diaphragm itself, but also to propose modifications to the hardware components that interfaced with it to extend the obtainable area for the diaphragm. This saved materials stress ranges low to remove any risk of fatigue failure of the diaphragm over the lifetime of the valve.
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