Method for actively controlling lamination slippage in composite material component
A composite material component, active control technology, applied in the direction of household components, household appliances, other household appliances, etc., can solve the problem of uncontrollable lamination slip process, avoid lamination wrinkles and overhead defects, easy to operate, enhance Effects of Design and Manufacturing Limits
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example 1
[0035] Example 1: In this example, a large-thickness composite material component is selected to illustrate the method of actively controlling the lamination slip during the molding process, which is not limited to this example.
[0036] A constant pressure field of 600KPa is applied to the composite member by finite element, and a number of discrete points are extracted according to the slip rate distribution and profile curvature distribution, and the mapping relationship between profile curvature and slip rate is established by numerical fitting. The first derivative of the curve is obtained to obtain the sensitivity of the slip rate to the profile curvature. Taking the sensitivity of the slip rate to the profile curvature as the first zoning criterion, the regions are initially divided according to the same sensitivity tolerance, and the region boundaries are determined in turn. The U-shaped composite components are preliminarily divided into ①, ②, ⑤, ⑥, ③+④ five areas (su...
example 2
[0042] The difference between this example and example 1 is that the lamination slip process is actively controlled by adjusting the temperature. like Figure 8 As shown in the figure, when the resin in the composite material does not have fluidity at 35 °C, a constant compaction pressure of 600KPa recommended by the material manufacturer is applied to the component, and then the temperature is applied in sequence at multiple times, and the sliding rate is monitored in real time. The temperature actively controls the lamination slip, and the rest is the same as the above example 1.
example 3
[0044] The difference between this example and Example 1 is that the shape of the composite material component is a hyperboloid (such as Figure 9 shown), with a thickness of 2 mm, and a fiber optic sensor placed in the center of each area to monitor the lamination slip rate.
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