Finite Element Analysis supplies information to predict how a seal product will operate under sure circumstances and may help establish areas where the design could be improved without having to test multiple prototypes.
Here pressure gauge 10 bar explain how our engineers use FEA to design optimum sealing solutions for our buyer purposes.
Why can we use Finite Element Analysis (FEA)?
Our engineers encounter many crucial sealing functions with complicating influences. Envelope measurement, housing limitations, shaft speeds, pressure/temperature scores and chemical media are all utility parameters that we must contemplate when designing a seal.
In isolation, the influence of these application parameters is reasonably simple to predict when designing a sealing answer. However, when you compound a number of these elements (whilst usually pushing some of them to their upper limit when sealing) it is essential to predict what’s going to happen in actual utility circumstances. Using FEA as a device, our engineers can confidently design and then manufacture sturdy, dependable, and cost-effective engineered sealing solutions for our prospects.
Finite Element Analysis (FEA) permits us to understand and quantify the effects of real-world circumstances on a seal part or assembly. It can be used to establish potential causes where sub-optimal sealing efficiency has been noticed and can be used to guide the design of surrounding elements; particularly for products similar to diaphragms and boots the place contact with adjoining parts might need to be avoided.
The software program additionally allows drive knowledge to be extracted in order that compressive forces for static seals, and friction forces for dynamic seals can be accurately predicted to assist customers in the final design of their merchandise.
How can we use FEA?
Starting with a 2D or 3D model of the initial design concept, we apply the boundary circumstances and constraints provided by a customer; these can embrace pressure, drive, temperatures, and any utilized displacements. เกจวัดแรงดัน 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 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 materials are non-linear; the quantity they deflect under an increase in drive varies depending on how large that pressure is. diaphragm seal is in distinction to the straight-line relationship for most metals and rigid plastics. This complicates the material mannequin and extends the processing time, however we use in-house tensile check amenities to accurately produce the stress-strain materials fashions for our compounds to make sure the analysis is as consultant of real-world performance as attainable.
What happens with the FEA data?
The analysis itself can take minutes or hours, relying on the complexity of the half and the range of operating circumstances being modelled. Behind the scenes in the software program, many tons of of thousands of differential equations are being solved.
The outcomes are analysed by our experienced seal designers to determine areas where the design can be optimised to match the precise requirements of the appliance. Examples of those requirements may include sealing at very low temperatures, a have to minimise friction levels with a dynamic seal or the seal might have to withstand excessive pressures with out extruding; no matter sealing system properties are most necessary to the shopper and the appliance.
Results for the finalised proposal may be offered to the customer as force/temperature/stress/time dashboards, numerical data and animations showing how a seal performs all through the evaluation. This info can be utilized as validation data within the customer’s system design process.
An example of FEA
Faced with very tight packaging constraints, this customer requested a diaphragm component for a valve application. By using FEA, we were capable of optimise the design; not solely of the elastomer diaphragm itself, but additionally to suggest modifications to the hardware parts that interfaced with it to extend the available area for the diaphragm. This stored materials stress ranges low to remove any possibility of fatigue failure of the diaphragm over the lifetime of the valve.