Optimization method for process pressure of resin base composite equal thick laminate hot-press technology

Abstract

A method for optimizing pressure system of hot-pressing process for preparing resin based composite material and equal thick laminated board includes applying genetic algorithm and utilizing relationship G1 of resin flow to fiber tightness and relationship G2 of fiber born pressure to fiber volume fraction in resin based composite material hot-press forming analog unit to carry out optimization on pressure size and pressurizing opportunity based on temperature system for obtaining satisfied volume friction and distribution of object fiber.

Description

Technical field: [0001] The present invention relates to an optimization method of hot pressing process, specifically, it refers to an optimization method suitable for the pressure system of thick laminated board hot pressing process such as resin-based composite materials, which is achieved by computer, resin-based composite material hot pressing The forming simulation unit, process parameter optimization target and method unit are realized. The method of the present invention can quickly determine the optimized pressure system that meets the target requirements under the condition of being separated from the actual production line, and the optimized process system can be combined with the hot-press forming numerical control system. Guide the industrial operation of hot-press forming of thick laminates such as resin-based composite materials. Background technique: [0002] Thermoforming has always been the most important process for producing advanced resin-based composite ...

AI Technical Summary

Problems solved by technology

[0002] Thermocompression molding has always been the most important process for the production of advanced resin matrix composite parts with main load-bearing structures in the aerospace field. However, the high manufacturing cost seriously restricts its development and application.

At present, the main reasons for the high manufacturing cost of advanced resin matrix composite components are as follows: (1) The development model is backward, the development cycle is long, and the efficiency is low

At present, the development of composite material structures is based on experimentation. First, the test of the sample, and then the scale test. After repeated several times to determine the manufacturing process, the development cycle is long; the optimization of the process parameters of the composite material structure is based on experience and experiments. High cost, poor science

(2) Manufacturing specifications are not universal

A relatively reasonable manufacturing process specification for a certain composite material component formed from a large number of tests is only applicable to this specific situation. Once the structural form of the composite material component is changed, a large number of new tests need to be done, which is costly and time-consuming

(3) The controllability of the quality of the parts is poor, resulting in the dispersion of the performance of the composite material, the low allowable value of the material, and the low qualification rate of the components

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