Why Ceetak uses Finite Element Analysis

Finite Element Analysis provides information to predict how a seal product will function beneath certain circumstances and might help establish areas where the design can be improved with out having to test a number of prototypes.
Here we explain how our engineers use FEA to design optimal sealing solutions for our customer applications.
Why do we use Finite Element Analysis (FEA)?
Our engineers encounter many critical sealing functions with complicating influences. Envelope size, housing limitations, shaft speeds, pressure/temperature rankings and chemical media are all utility parameters that we should consider when designing a seal.
In isolation, the impact of those software parameters within reason easy to predict when designing a sealing answer. However, if you compound numerous these factors (whilst often pushing some of them to their upper limit when sealing) it’s crucial to predict what will happen in actual application situations. Using FEA as a tool, our engineers can confidently design and then manufacture sturdy, reliable, and cost-effective engineered sealing options for our prospects.
Finite Element Analysis (FEA) permits us to grasp and quantify the results of real-world situations on a seal part or meeting. It can be used to determine potential causes where sub-optimal sealing performance has been noticed and can be used to guide the design of surrounding parts; especially for products corresponding to diaphragms and boots where contact with adjacent elements could must be avoided.
The software program additionally permits drive information to be extracted so that compressive forces for static seals, and friction forces for dynamic seals can be precisely predicted to assist customers in the last design of their merchandise.
How will we use FEA?
Starting with a 2D or 3D mannequin of the preliminary design idea, we apply the boundary situations and constraints equipped by a customer; these can include stress, pressure, temperatures, and any utilized displacements. A suitable finite factor mesh is overlaid onto the seal design. This ensures that the areas of most curiosity return accurate outcomes. We can use larger mesh sizes in areas with much 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 underneath a rise in drive varies depending on how large that force is. เพรสเชอร์เกจดิจิตอล is in distinction to the straight-line relationship for many metals and inflexible plastics. This complicates the material model and extends the processing time, but we use in-house tensile take a look at amenities to accurately produce the stress-strain material fashions for our compounds to ensure the analysis is as consultant 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 part and the range of operating circumstances being modelled. Behind the scenes within the software, many lots of of 1000’s of differential equations are being solved.
The results are analysed by our experienced seal designers to determine areas the place the design could be optimised to match the particular necessities of the appliance. Examples of those necessities may include sealing at very low temperatures, a have to minimise friction ranges with a dynamic seal or the seal might have to resist high pressures with out extruding; whatever sealing system properties are most essential to the shopper and the applying.
Results for the finalised proposal may be presented to the client as force/temperature/stress/time dashboards, numerical knowledge and animations exhibiting how a seal performs throughout the analysis. This data can be used as validation data within the customer’s system design course of.
An example of FEA
Faced with very tight packaging constraints, this customer requested a diaphragm component for a valve software. By utilizing FEA, we were capable of 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 kept materials stress levels low to take away any risk of fatigue failure of the diaphragm over the lifetime of the valve.

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