Research On Stacking Design Of Automated Fiber Placement Technology

The widespread application of composite materials depends on its manufacturingtechniques largely. Automated Fiber Placement is an advanced composite materialforming method which is based on filament winding and automatic tap layer and hasgreat potential in reducing manufacturing costs，improving efficiency and function，gaining much attention of industrial developed countries.The key technology of thismethod is mastered by developed countries blockade against china.A lot of researchhas been done，but large gaps between west and us still exist.Automated Fiber Placement is a systematic engineering involves MaterialTechnology， Computer Technology， Digital Manufacturing Technology，Mechanical Equipment Technology and so on. This paper research the stackingdesign in the AFP. The main contents are as follows:（1）This topic is pre-research project of Wuhan University of TechnologyComposites Institute of winding equipment. By referring to relevant literature andinformation on the subject of automated fiber placement technology background，research status and significance were introduced.（2）Researching the stack in AFP. Stacking Design is based on the enhancedperformance fibers and matrix consisting of single plate to determine the orientationof the fibers in each ply single layer stacking sequence，the proportion of the totalnumber of the total number of layers and each ply orientation relative to themonolayer，the structure basis for the design. First Composite components aredivided into three structural levels–single，laminated panels and products structure；then analyzed the mechanical properties of laminates，composites based on thestrength of the theoretical mechanics；finally see the analysis of the data presented onthe basis of past common overlay design methods and automated fiber placementtechnology overlay design principles.（3）Proposing two different stack order in connection with the product surfaceof different thickness: local thickening and alternate placement. Advantages anddisadvantages of the two programs，and the use of finite element method were studiedsimplified model，alternating placement scheme proved more conducive to strength，rigidity and stability.（4）Proposing general process of Stacking Design: Depending on the model of aregional breakdown under load, and then follow the overlay design principles and design methods to calculate the initial overlay different locations ply thickness and theratio of the final substituting composite structural analysis and design software toperform overlay designed to meet the data obtained ply fiber placement system. Andat last, the executive body shop ply silk head briefly.