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1、Seediscussions,stats,andauthorprofilesforthispublicationat:https://www.researchgate.net/publication/289895814NumericalsimulationonspallingofconcreteunderdynamicloadingArticleinJianzhuCailiaoXuebao/JournalofBuildingMaterials·December2008CITATIONSREADS2675a
2、uthors,including:WanchengZhuChenhuiWeiNortheasternUniversity(Shenyang,China)NortheasternUniversity(Shenyang,China)174PUBLICATIONS2,024CITATIONS48PUBLICATIONS268CITATIONSSEEPROFILESEEPROFILESomeoftheauthorsofthispublicationarealsoworkingontheserelatedproje
3、cts:FailuremechanismofrockundercombinedmultiplestrainratesViewprojectSolidMechanicsViewprojectAllcontentfollowingthispagewasuploadedbyChenhuiWeion02May2016.Theuserhasrequestedenhancementofthedownloadedfile.第11卷第6期建筑材料学报Vol.11,No.62008年12月JOURNALOFBUILDING
4、MATERIALSDec.,2008文章编号:1007-9629(2008)06-0709-06动态荷载作用下混凝土破裂的数值模拟朱万成,尚世明,李占海,魏晨慧,朱亮(东北大学资源与土木工程学院,辽宁沈阳110004)摘要:简单介绍了材料破裂过程分析(MFPA)程序模拟混凝土动态破裂过程的基本原理.用MFPA程序模拟了非均质混凝土在静态和动态应力作用下的破裂过程,给出了不同应力波幅值时试样的破裂模式,并探讨了应力波幅值和应力波作用时间对混凝土破裂模式的影响.数值模拟结果表明,动态荷载作用下混凝土的破裂过程
5、受控于应力波传播及其诱发损伤的过程,混凝土材料力学性能的非均质性是造成其动态强度提高的原因之一.关键词:混凝土;应力波;剥落破裂;动态强度;数值模拟中图分类号:TU37文献标识码:ANumericalSimulationonSpallingofConcreteunderDynamicLoadingZHUWan2cheng,SHANGShi2ming,LIZhan2hai,WEIChen2hui,ZHULiang(SchoolofResourceandCivilEngineering,Northeaster
6、nUniversity,Shenyang110004,China)Abstract:Theprincipleofmaterialfailureprocessanalysis(MFPA)codetosimulatedynamicfail2ureofconcretearebrieflysummarized.MFPAcodewasusedtosimulatethefailureprocessofconcreteunderstaticanddynamicloading,andthedifferentspallin
7、gpatternsofconcreteunderdynamicstresswaveswithdifferentamplitudesanddifferentdurationswerecapturedandtheassociatedmechanismswereclarified.Thenumericalsimulationsindicatethatthefailureprocessofconcreteunderdynamicloadingiscontrolledbythestresswavepropagati
8、onaswellasitsin2duceddamage,andtheheterogeneityisoneoffactorsthatleadstotheincreaseofdynamicstrengthofconcrete.Keywords:concrete;stresswave;spallingfailure;dynamicstrength;numericalsimulation混凝土是一种水泥基复合材料,其成分复杂,且呈现非
