Why Ceetak makes use of Finite Element Analysis

Finite Element Analysis offers information to foretell how a seal product will perform underneath sure circumstances and might help identify areas the place the design can be improved without having to check multiple prototypes.
Here we explain how our engineers use FEA to design optimal sealing options for our buyer applications.
Why can เกจวัดแรงดันสูง use Finite Element Analysis (FEA)?
Our engineers encounter many critical sealing purposes with complicating influences. Envelope measurement, housing limitations, shaft speeds, pressure/temperature ratings and chemical media are all application parameters that we must think about when designing a seal.
In isolation, the influence of those software parameters is reasonably simple to predict when designing a sealing resolution. However, whenever you compound a selection of these components (whilst usually pushing some of them to their higher restrict when sealing) it’s essential to foretell what will happen in real application conditions. Using FEA as a device, our engineers can confidently design after which manufacture robust, reliable, and cost-effective engineered sealing options for our customers.
Finite Element Analysis (FEA) allows us to grasp and quantify the consequences of real-world conditions on a seal part or meeting. It can be utilized to identify potential causes where sub-optimal sealing efficiency has been noticed and can also be used to guide the design of surrounding parts; particularly for merchandise corresponding to diaphragms and boots the place contact with adjoining parts may must be prevented.
The software also permits drive knowledge to be extracted in order that compressive forces for static seals, and friction forces for dynamic seals can be precisely predicted to help clients within the last design of their merchandise.
How will we use FEA?
Starting with a 2D or 3D mannequin of the initial design idea, we apply the boundary conditions and constraints supplied by a customer; these can embody stress, force, 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 results. 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 mannequin.
Material properties are then assigned to the seal and hardware components. Most sealing materials are non-linear; the quantity they deflect under a rise in drive varies depending on how giant that drive is. This is unlike the straight-line relationship for most metals and inflexible plastics. This complicates the fabric mannequin and extends the processing time, however we use in-house tensile check facilities to accurately produce the stress-strain material fashions for our compounds to make sure the evaluation is as representative of real-world efficiency as attainable.
What occurs with the FEA data?
The analysis itself can take minutes or hours, depending on the complexity of the half and the range of operating conditions being modelled. Behind the scenes in the software, many tons of of thousands of differential equations are being solved.
The results are analysed by our skilled seal designers to establish areas where the design may be optimised to match the particular necessities of the application. Examples of these requirements could embody sealing at very low temperatures, a must minimise friction levels with a dynamic seal or the seal may have to withstand high pressures with out extruding; no matter sealing system properties are most essential to the shopper and the applying.
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 throughout the analysis. This information can be used as validation data in the customer’s system design process.
An instance of FEA
Faced with very tight packaging constraints, this customer requested a diaphragm part for a valve application. By using FEA, we had been able to optimise the design; not only of the elastomer diaphragm itself, but in addition to propose modifications to the hardware elements that interfaced with it to extend the out there space for the diaphragm. This saved material stress ranges low to take away any possibility of fatigue failure of the diaphragm over the life of the valve.

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