Control method for core lattice deformation in honeycomb core bending process

Abstract

A control method for core lattice deformation in the honeycomb core bending process comprises the steps that bending tests are conducted on honeycomb cores with different thicknesses under different bending radiuses, the inner surfaces of the honeycomb cores are deformed and collapsed in the bending state, and the number of the deformed and collapsed core lattices on the inner surfaces of the honeycomb cores is counted; measuring and counting the collapse quantity and deformation quantity of the honeycomb cores with different thicknesses under different bending radiuses, and determining the slotting spacing of the honeycomb cores with different thicknesses under different bending radiuses according to the deformation requirement of the honeycomb core bending process on the premise of ensuring that the core grids do not collapse in the honeycomb core bending process; the collapsing quantity and the deformation quantity of the core grids are compensated through the slotting spacing; on the premise of determining the grooving distances of the honeycombs with different thicknesses under different bending radiuses, the grooving angle is further determined.

Description

technical field [0001] The invention relates to a method for controlling cell deformation and slotting during the bending process of a honeycomb core, and belongs to the field of composite material sandwich structure manufacturing. Background technique [0002] The honeycomb sandwich structure is composed of two high-strength upper and lower panels and a thick and light honeycomb core in the middle. It has excellent characteristics such as light weight, high specific strength, high specific stiffness and high energy absorption efficiency. It is widely used in aviation Aerospace and other fields, such as wing leading edge U-shaped parts, flaps, ailerons, spoiler rudders, elevators, vertical and flat tail panels, engine nacelles, fairings and other structures. [0003] Most of the composite components of honeycomb sandwich have complex free-form surface shapes, and their manufacturing process usually includes steps such as outer skin laying, honeycomb core stabilization treatm...

AI Technical Summary

Problems solved by technology

The current method is basically to carry out the paving test on the molding die and combine the processing experience of the person to make the groove. This method has problems such as low efficiency, poor consistency, and unstable product quality.

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