不同结构纤维布对拉挤板层间树脂流动的模拟分析

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Simulation analysis of interlayer resin flow in pultruded panels by fiber cloths of several structures

LI Chendi'，WEI Xinl*， YANG Yong² （1.Tiangong University，School of Textile Science and Engineering，Tianjin 300387; 2.Dongfang Electric （Tianjin） Wind Power Blade Engineering Co.， Tianjin 300387）

Abstract：Inordertoresearch theinfluenceofdiferentinfluencingfactorsontheresinflowprocessinthe vacum infusion molding processof themainbeamofpultruded plateforlargewindturbineblades，thepermeabilityofdiferentfiberreinforcements wasobtainedbycombining with Darcy'slaw，andtheflowmodelofresinbetweenthelayersofpultruded plate wasestablished throughthefiniteelementmethodtosimulateandanalyzetheinfluencesof diferentinjectionmethods，the numberoflayersof pultrudedplateandthefibers withdiferentstructuresontheresininthe processofmoldfillng.The resultsshowthat：thefullfilingtimeofthemodelisdirectlyproportionaltothenumberofpultrudedboardlayers;the fillng time of two sides injection is shorter than that of one side injection，which is optimized by 27.9% ; the fiberreinforcement of diferentstructures hasasignificant efecton theresin filing flow process，andthe nonwoven with the largestpenetration hastheshortestfiling time，andthe plain weavewithalarger penetrationrate intheYdirection hasashorterfillng time compared to the warp knitted multiaxial fabric with the relative reduction of 16.3% . reduced by 16.3% . The simulation resultsrevealtheinfluenceofthespatialmatchingbetweenthepermeabilityanisotropyofreinforcementmaterialsandtheinjectiondirectiononthemoldfilingeficiency，whichprovidesatheoreticalbasisforoptimizing thedesignofreinforcement lay-up，andcanprovideaneffctivereferencefortheadjustmentof theprocessofmultilayeredpultruded plate mainbeam.

Keywords：finite element analysis; permeability; pultruded plate; VARI process; composites

1引言

清洁可再生能源由于其环保性、可再生性、成本低和广泛使用性被认为是化石能源的主要替代方案之一[1.2]。（剩余7637字）