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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復(fù)合材料學(xué)報第19卷第6期12月2002年ACTAMATERIAECOMPOSITAESINICAVol.19No.6December2002文章編號:1000-3851(2002)06-0008-05小尺寸試件層合板低速沖擊后的剩余壓縮強(qiáng)度122程小全,張子龍,吳學(xué)仁(1.北京航空航天大學(xué)飛機(jī)設(shè)計研究所,北京100083;2.北京航空材料研究院,北京100095)摘要:使用一種小尺寸試件試驗(yàn)方法來測量復(fù)合材料層合板低速沖擊后的剩余壓縮強(qiáng)度(CAI),以便減少試驗(yàn)費(fèi)
4、用,降低材料研制成本和周期。在試驗(yàn)研究的基礎(chǔ)上,建立了復(fù)合材料低速沖擊后剩余壓縮強(qiáng)度估算的一種軟化夾雜模型。該模型將沖擊損傷等效成圓形低剛度的夾雜,用8節(jié)點(diǎn)等參元分析層合板的應(yīng)力應(yīng)變狀態(tài),以點(diǎn)應(yīng)力準(zhǔn)則為壓縮破壞判據(jù)。理論分析結(jié)果與試驗(yàn)對比顯示,該模型簡單有效。關(guān)鍵詞:復(fù)合材料層合板;低速沖擊;損傷;剩余壓縮強(qiáng)度中圖分類號:TB330.1文獻(xiàn)標(biāo)識碼: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