ไดอะแฟรม LOGO.png

Why Ceetak uses Finite Element Analysis

Finite Element Analysis offers information to foretell how a seal product will operate underneath certain situations and may help establish areas where the design can be improved with out having to test a quantity of prototypes.
Here we clarify how our engineers use FEA to design optimum sealing solutions for our customer functions.
Why can we use Finite Element Analysis (FEA)?
Our engineers encounter many critical sealing applications with complicating influences. Envelope size, housing limitations, shaft speeds, pressure/temperature scores and chemical media are all software parameters that we should think about when designing a seal.
In isolation, the impact of those utility parameters is fairly straightforward to predict when designing a sealing resolution. However, when you compound a selection of these factors (whilst often pushing some of them to their higher restrict when sealing) it is essential to predict what’s going to occur in real software situations. Using FEA as a tool, our engineers can confidently design after which manufacture sturdy, dependable, and cost-effective engineered sealing solutions for our customers.
Finite Element Analysis (FEA) permits us to know and quantify the consequences of real-world circumstances on a seal half or meeting. It can be used to determine potential causes where sub-optimal sealing efficiency has been noticed and may also be used to guide the design of surrounding components; particularly for products such as diaphragms and boots the place contact with adjoining elements could need to be prevented.
The software program additionally allows pressure information to be extracted in order that compressive forces for static seals, and friction forces for dynamic seals could be precisely predicted to help prospects in the final design of their merchandise.
How can 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 buyer; these can include pressure, drive, temperatures, and any utilized displacements. A suitable finite component mesh is overlaid onto the seal design. This ensures that the areas of most curiosity return accurate results. We can use larger mesh sizes in areas with much less relevance (or lower ranges of displacement) to minimise the computing time required to solve the mannequin.
Material properties are then assigned to the seal and hardware parts. spmk700 sealing materials are non-linear; the quantity they deflect under a rise in pressure varies relying on how massive that drive is. This is not like 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 take a look at services to precisely produce the stress-strain material fashions for our compounds to ensure the evaluation is as consultant of real-world efficiency as attainable.
What happens with the FEA data?
The evaluation itself can take minutes or hours, relying on the complexity of the half and the range of operating conditions 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 skilled seal designers to establish areas where the design can be optimised to match the precise necessities of the appliance. Examples of those requirements may embrace sealing at very low temperatures, a must minimise friction ranges with a dynamic seal or the seal might have to resist excessive pressures without extruding; whatever sealing system properties are most essential to the customer and the appliance.
Results for the finalised proposal can be introduced to the client as force/temperature/stress/time dashboards, numerical knowledge and animations exhibiting how a seal performs all through the analysis. This data can be used as validation information within the customer’s system design course of.
An instance of FEA
Faced with very tight packaging constraints, this customer requested a diaphragm component for a valve software. By using FEA, we had 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 increase the out there space for the diaphragm. This saved materials stress levels low to take away any chance of fatigue failure of the diaphragm over the lifetime of the valve.
Share

Our Posts