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1、Seediscussions,stats,andauthorprofilesforthispublicationat:https://www.researchgate.net/publication/286983938Post-impactcompressivestrengthofsmallcompositelaminatespecimensArticleinFuheCailiaoXuebao/ActaMateriaeCompositaeSinica·December2002CITATIONSREADS15193authors,including:ChengXiaoquanBeihangUn
2、iversity(BUAA)75PUBLICATIONS369CITATIONSSEEPROFILESomeoftheauthorsofthispublicationarealsoworkingontheserelatedprojects:Failuresinscarf-repairedcompositelaminatesViewprojectStudiesoncompositejointsViewprojectAllcontentfollowingthispagewasuploadedbyChengXiaoquanon09March2016.Theuserhasrequestedenhan
3、cementofthedownloadedfile.DOI:10.13801/j.cnki.fhclxb.2002.06.002复合材料学报第19卷第6期12月2002年ACTAMATERIAECOMPOSITAESINICAVol.19No.6December2002文章编号:1000-3851(2002)06-0008-05小尺寸试件层合板低速冲击后的剩余压缩强度122程小全,张子龙,吴学仁(1.北京航空航天大学飞机设计研究所,北京100083;2.北京航空材料研究院,北京100095)摘要:使用一种小尺寸试件试验方法来测量复合材料层合板低速冲击后的剩余压缩强度(CAI),以便减少试验费
4、用,降低材料研制成本和周期。在试验研究的基础上,建立了复合材料低速冲击后剩余压缩强度估算的一种软化夹杂模型。该模型将冲击损伤等效成圆形低刚度的夹杂,用8节点等参元分析层合板的应力应变状态,以点应力准则为压缩破坏判据。理论分析结果与试验对比显示,该模型简单有效。关键词:复合材料层合板;低速冲击;损伤;剩余压缩强度中图分类号:TB330.1文献标识码:APOST-IMPACTCOMPRESSIVESTRENGTHOFSMALLCOMPOSITELAMINATESPECIMENS122CHENGXiaoquan,ZHANGZilong,WUXueren(1.AircraftDesignandRes
5、earchInstitute,BeihangUniversity,Beijing100083,China;2.BeijingInstituteofAeronauticalMaterials,Beijing100095,China)Abstract:Aminiaturepostimpactcompressiontestwasusedtostudythetechniqueforcom-positetestingwithaviewtoreducingthecostoftestingmaterials.Thistestmethodcanbeusedinamaterialdevelopingphase
6、.Basedonexperimentalstudies,areducedstiffnessinclusionmod-elwasdevelopedtopredicttheresidualcompressivestrengthofcompositelaminatesafterthelowvelocityimpact.Inthismodelthedamagewasconsideredasasoftzoneofthematerial.Thedamagezonewasassumedtobecircular.Afiniteelementcodewiththe8-node2Disoparametricel
7、ementwasprogrammedtocomputethestressdistributions.Thepointstresscriterionwasusedtodeterminewhetherthepost-impactlaminatesarecompressedtofailureornot.Goodagreementbetweenpredictedresidualcompressivestrengths
