Why Ceetak makes use of Finite Element Analysis

Finite Element Analysis provides information to predict how a seal product will function under sure conditions and may help determine areas the place the design may be improved without having to test multiple prototypes.
Here we clarify how our engineers use FEA to design optimal sealing solutions for our customer purposes.
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 ratings and chemical media are all software parameters that we must think about when designing a seal.
In isolation, the influence of these software parameters within reason easy to predict when designing a sealing answer. However, whenever you compound a selection of these components (whilst typically pushing a few of them to their upper limit when sealing) it’s essential to foretell what’s going to happen in actual software conditions. Using FEA as a device, our engineers can confidently design after which manufacture strong, reliable, and cost-effective engineered sealing solutions for our customers.
Finite Element Analysis (FEA) allows us to grasp and quantify the consequences of real-world situations on a seal part or assembly. It can be used to determine potential causes where sub-optimal sealing performance has been noticed and may also be used to guide the design of surrounding components; particularly for products such as diaphragms and boots where contact with adjacent components could have to be avoided.
The software program also permits force knowledge to be extracted so that compressive forces for static seals, and friction forces for dynamic seals may be precisely predicted to assist prospects within the ultimate design of their merchandise.
How do เกจวัดแรงดันsumo use FEA?

Starting with a 2D or 3D mannequin of the preliminary design concept, we apply the boundary situations and constraints equipped by a buyer; these can embrace strain, drive, temperatures, and any applied displacements. A appropriate 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 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 beneath an increase in force varies depending on how giant that force is. This is not like the straight-line relationship for many metals and rigid plastics. This complicates the fabric model and extends the processing time, however we use in-house tensile test facilities to precisely produce the stress-strain materials fashions for our compounds to make sure the evaluation is as representative of real-world efficiency as possible.
What happens with the FEA data?

The analysis itself can take minutes or hours, relying on the complexity of the part and the range of operating situations being modelled. Behind the scenes within the software, many hundreds of 1000’s of differential equations are being solved.
The results are analysed by our experienced seal designers to identify areas where the design may be optimised to match the specific necessities of the application. Examples of these requirements might embody sealing at very low temperatures, a have to minimise friction ranges with a dynamic seal or the seal may need to withstand high pressures with out extruding; no matter sealing system properties are most essential to the customer and the application.
Results for the finalised proposal can be introduced to the customer as force/temperature/stress/time dashboards, numerical knowledge and animations showing how a seal performs all through the evaluation. This information can be utilized as validation data within the customer’s system design course of.
An instance of FEA

Faced with very tight packaging constraints, this buyer requested a diaphragm part for a valve utility. By using FEA, we have been in a place to optimise the design; not solely of the elastomer diaphragm itself, but in addition to propose modifications to the hardware components that interfaced with it to extend the obtainable house for the diaphragm. This stored materials stress levels low to remove any possibility of fatigue failure of the diaphragm over the life of the valve.

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