![]() ![]() For example, if the gasket is stressed to point A during an analysisĪnd unloaded, the unloading will follow the dashed line A-B in the figure, where A-B is interpolated from the curves 10-11-12Īnd 13-14-15. The actual unloading curve at intermediate position. The user defined unloading curves are interpolated to obtain Is defined by a number of unloading curves (12-11-10, 15-14-13). When the gasket is unloaded after yielding but before being fully compressed (between points 3 and 7), the unloading behavior Beyond this point, the gasket will behave elastically and no further plastic deformation will Point 7, where the last unloading curve is defined, corresponds to the point that Plastic) deformation starts to accumulate. Point 3 is the user-defined yield point at higher closures (more compression), the gasket starts to yield and permanent (or Note how the simulated gasket is thicker than the physical gasket.įigure 2: Initial Gap in Gasket Element (The gasket, part 4, is between parts 1 and 2) (b) In the model, connect part 4 directly to the mating parts (1 and 2) and use the initial gap capability of the gasket material To surface contact could be used along with the gap between parts 2 and 4, but this would result in a longer analysis run. (a) The physical situation includes an initial gap G between the gasket (part 4) and one of the mating parts (part 2).
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