纤维复合材料
纖維複閤材料
섬유복합재료
FIBER COMPOSITES
2013年
3期
21-26
,共6页
宋孟燕%傅向荣%田歌%陈新文%侯日立
宋孟燕%傅嚮榮%田歌%陳新文%侯日立
송맹연%부향영%전가%진신문%후일립
复合材料%固化变形%分层仿真%装配应力
複閤材料%固化變形%分層倣真%裝配應力
복합재료%고화변형%분층방진%장배응력
composite%curing deformation%Hierarchical simulation%assembly stress
复合材料在固化过程中,由于材料各向异性、铺层非对称不均衡、构件布置不对称,温度改变和固化度的分布不均匀,导致不同程度的固化收缩,使复合材料结构件发生与预期形状不一样的固化变形。复合材料层合构件发生固化变形后,在装配过程中须进行校正。对固化变形的校正会增大整个构件的应力水平。特别在装配点附近的构件连接处,会产生较大的装配应力,对整体构件产生很不利的影响。本文研究固化变形校正装配的过程,并建立一套考虑固化变形校正装配破坏的分析方法。研究了复合材料固化变形的机理,并介绍了复合材料分层仿真的界面元方法。基于以上研究,在复合材料层合结构分析软件ADGS中,建立了一套较完整的复合材料整体化构件的装配破坏仿真分析模型。
複閤材料在固化過程中,由于材料各嚮異性、鋪層非對稱不均衡、構件佈置不對稱,溫度改變和固化度的分佈不均勻,導緻不同程度的固化收縮,使複閤材料結構件髮生與預期形狀不一樣的固化變形。複閤材料層閤構件髮生固化變形後,在裝配過程中鬚進行校正。對固化變形的校正會增大整箇構件的應力水平。特彆在裝配點附近的構件連接處,會產生較大的裝配應力,對整體構件產生很不利的影響。本文研究固化變形校正裝配的過程,併建立一套攷慮固化變形校正裝配破壞的分析方法。研究瞭複閤材料固化變形的機理,併介紹瞭複閤材料分層倣真的界麵元方法。基于以上研究,在複閤材料層閤結構分析軟件ADGS中,建立瞭一套較完整的複閤材料整體化構件的裝配破壞倣真分析模型。
복합재료재고화과정중,유우재료각향이성、포층비대칭불균형、구건포치불대칭,온도개변화고화도적분포불균균,도치불동정도적고화수축,사복합재료결구건발생여예기형상불일양적고화변형。복합재료층합구건발생고화변형후,재장배과정중수진행교정。대고화변형적교정회증대정개구건적응력수평。특별재장배점부근적구건련접처,회산생교대적장배응력,대정체구건산생흔불리적영향。본문연구고화변형교정장배적과정,병건립일투고필고화변형교정장배파배적분석방법。연구료복합재료고화변형적궤리,병개소료복합재료분층방진적계면원방법。기우이상연구,재복합재료층합결구분석연건ADGS중,건립료일투교완정적복합재료정체화구건적장배파배방진분석모형。
The Curing deformation and stress are formed because of the anisotropic material ,the imbalanced ply stac-king and the asymmetric layout of the components ,as the uneven distribution of and temperature and curing degree of dif-ferent degrees of thermal expansion and curing shrinkage .The composite laminated component should be calibrated at the assemble points after the curing deformation process , which increased the stress level of the component especially for the joints area near the assemble point .It has a detrimental effect on the assembly process .In this paper,the affect of curing deformation process in assembly process and building a reasonable analysis method based on the curing deformation process is studied.The mechanism of curing deformation is studied and the use of the interface element in the simulation of the com -posite component is described .Based on the theory ,a relatively complete analysis method of the simulation process of com-posite integrative component is proposed based on the ADGS software .