Why Ceetak uses Finite Element Analysis

Finite Element Analysis supplies information to predict how a seal product will function under sure conditions and might help determine areas the place the design can be improved without having to test a number of prototypes.
Here we explain how our engineers use FEA to design optimal sealing options for our customer functions.
Why can we use Finite Element Analysis (FEA)?
Our engineers encounter many important sealing applications with complicating influences. Envelope size, housing limitations, shaft speeds, pressure/temperature ratings and chemical media are all software parameters that we should contemplate when designing a seal.
In isolation, the impression of those utility parameters is reasonably straightforward to foretell when designing a sealing answer. However, if you compound a quantity of these components (whilst usually pushing some of them to their upper limit when sealing) it is essential to foretell what’s going to happen in actual software conditions. Using FEA as a software, our engineers can confidently design and then manufacture sturdy, reliable, and cost-effective engineered sealing solutions for our prospects.
Finite Element Analysis (FEA) allows us to understand and quantify the effects of real-world conditions on a seal half or assembly. It can be utilized to determine potential causes where sub-optimal sealing efficiency has been noticed and can additionally be used to information the design of surrounding elements; particularly for products similar to diaphragms and boots where contact with adjacent components could must be prevented.
The software program additionally allows force data to be extracted so that compressive forces for static seals, and friction forces for dynamic seals can be accurately predicted to help prospects in the ultimate design of their merchandise.
How will we use FEA?
Starting with a 2D or 3D mannequin of the initial design idea, we apply the boundary situations and constraints equipped by a customer; these can embody strain, force, temperatures, and any applied displacements. A appropriate finite component mesh is overlaid onto the seal design. This ensures that the areas of most interest return accurate outcomes. 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 parts. เกจวัดแรงดัน4นิ้วราคา sealing supplies are non-linear; the amount they deflect underneath a rise in pressure varies depending on how large that drive is. This is not like the straight-line relationship for many metals and inflexible plastics. This complicates the material 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 potential.
What happens with the FEA data?
The evaluation itself can take minutes or hours, relying on the complexity of the part and the range of operating conditions being modelled. Behind the scenes within the software program, many tons of of 1000’s of differential equations are being solved.
The outcomes are analysed by our experienced seal designers to establish areas where the design can be optimised to match the particular necessities of the application. Examples of those necessities could embrace sealing at very low temperatures, a need to minimise friction ranges with a dynamic seal or the seal might have to resist high pressures without extruding; whatever sealing system properties are most important to the client and the appliance.
Results for the finalised proposal could be presented to the client as force/temperature/stress/time dashboards, numerical data and animations showing how a seal performs throughout the evaluation. This information can be used as validation information in the customer’s system design process.
An example of FEA
Faced with very tight packaging constraints, this buyer requested a diaphragm component for a valve utility. By utilizing FEA, we were able 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 increase the out there area for the diaphragm. This stored materials stress levels low to take away any chance of fatigue failure of the diaphragm over the lifetime of the valve.
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