Why Ceetak makes use of Finite Element Analysis

Finite Element Analysis supplies data to foretell how a seal product will operate beneath certain situations and might help establish areas where the design could be improved without having to check multiple prototypes.
Here we clarify how our engineers use FEA to design optimal sealing options for our customer applications.
Why do we use Finite Element Analysis (FEA)?

Our engineers encounter many crucial sealing purposes with complicating influences. Envelope size, housing limitations, shaft speeds, pressure/temperature scores and chemical media are all software parameters that we must contemplate when designing a seal.
In isolation, the influence of these utility parameters is reasonably simple to predict when designing a sealing resolution. However, when you compound a number of these elements (whilst typically pushing a few of them to their higher restrict when sealing) it’s essential to predict what will happen in real application conditions. Using FEA as a software, our engineers can confidently design after which manufacture sturdy, reliable, and cost-effective engineered sealing options for our clients.
Finite Element Analysis (FEA) allows us to know and quantify the effects of real-world conditions on a seal half or meeting. It can be utilized to establish potential causes the place sub-optimal sealing efficiency has been noticed and may also be used to guide the design of surrounding elements; particularly for merchandise such as diaphragms and boots the place contact with adjacent parts could need to be avoided.
The software also allows force information to be extracted so that compressive forces for static seals, and friction forces for dynamic seals could be accurately predicted to assist customers in the last design of their products.
How will we use FEA?

Starting with a 2D or 3D model of the initial design idea, we apply the boundary circumstances and constraints provided by a customer; these can embrace strain, pressure, temperatures, and any applied displacements. A suitable finite component mesh is overlaid onto the seal design. This ensures that the areas of most interest return correct outcomes. We can use bigger mesh sizes in areas with less relevance (or lower levels of displacement) to minimise the computing time required to resolve the mannequin.
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 pressure varies relying on how massive that force is. This is unlike the straight-line relationship for many metals and inflexible plastics. This complicates the fabric mannequin and extends the processing time, however we use in-house tensile take a look at facilities to accurately produce the stress-strain material fashions for our compounds to ensure the evaluation is as consultant 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 vary of operating conditions being modelled. Behind เกจวัดแรงดัน in the software program, many hundreds of thousands of differential equations are being solved.
The outcomes are analysed by our skilled seal designers to determine areas the place the design may be optimised to match the particular necessities of the application. Examples of these necessities might embrace sealing at very low temperatures, a must minimise friction levels with a dynamic seal or the seal may have to face up to high pressures without extruding; whatever sealing system properties are most essential to the client and the application.
Results for the finalised proposal could be introduced to the shopper as force/temperature/stress/time dashboards, numerical data and animations displaying how a seal performs all through the analysis. This data can be utilized as validation knowledge in the customer’s system design course of.
An instance of FEA

Faced with very tight packaging constraints, this buyer requested a diaphragm component for a valve application. By using FEA, we have been able to optimise the design; not solely of the elastomer diaphragm itself, but also to suggest modifications to the hardware elements that interfaced with it to extend the out there space for the diaphragm. This stored material stress ranges low to take away any risk of fatigue failure of the diaphragm over the life of the valve.
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