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功能梯度材料结构的非线性稳定性理论研究
Project Number11472123
马连生
Abstract由于功能梯度材料本身的材料特性,使得其结构在外因素下的力学响应,常常异于传统材料结构。本项目将在几何非线性理论框架下,拟就功能梯度材料结构的非线性稳定性等问题展开研究,分析外因素下功能梯度结构异于均匀材料结构的力学行为,揭示功能梯度材料性能变化对这类结构力学行为影响的内在机理。本项目主要针对以下问题展开研究:1.外因素下,功能梯度结构可能产生的多构形问题;2.定量分析前屈曲耦合变形对功能梯度结构屈曲的影响;3.从结构的全局变形入手,基于变形的几何非线性理论,并计及前屈曲耦合变形的影响,建立适合功能梯度结构的非线性稳定分析理论。以上问题是功能梯度材料结构非线性力学行为研究领域中富有挑战性的课题,其研究结果无疑会丰富功能梯度结构热弹性力学理论以及结构稳定理论,并为功能梯度材料结构的应用和安全性设计提供理论基础。【英文摘要】Duetoitsmaterialpropertiesthroughthethickness,mechanicalbehaviorofstructuresmadeoffunctionallygradedmaterialsunderappliedloadingisoftendifferentfromthatofstructuresmadeoftraditionalmaterials.Thisprojectisconcernedwithinvestigatinginnonlinearstabilitytheoryoffunctionallygradedmaterialstructuresintheframeofgeometricnonlineartheory.Unusualnonlinearmechanicalbehavioroffunctionallygradedmaterialstructuresareinvestigatedinthisproject,whichrevealtheintrinsicmechanismofeffectofmaterialpropertiesonthemechanicalbehaviorforfunctionallygradedmaterialstructures.Inthisinvestigation,wefocusonthefollowingproblems:1.afunctionallygradedstructuresubjectedtoappliedloadmaybehavemanydeformedconfigurations,2.theeffectofthepre-bucklingcouplingdeformationonthebucklingofthefunctionallygradedmaterialstructuresarestudiedquantificationally,3.basedonthegeometricnonlineartheory,anonlinearstabilitytheoryusedforthefunctionallygradedmaterialstructuresisestablishedbyinvestigatingthewholeprocedureindeformationofthestructuressubjectedtoappliedloadsandtakingtheeffectsofthepre-bucklingcouplingintoaccountintheanalysis.Theabovementionedworksarechallengingproblemsinfieldofnonlinearmechanicalbehavioroffunctionallygradedmaterialstructures,so,theachievementsoftheprojectareexpectedtoenrichthetheoryofstabilityandthermoelasticmechanicsforfunctionallygradedmaterialstructuresandtoprovidtheoreticalfoundationforapplicationandsafedesignoffunctionallygradedmaterialstructures.
Subtype面上项目
Project Source国家自然科学基金
2015-01
End Date2018-12
MOST Discipline Catalogue02 - 力学 ; 0203 - 固体力学
Host Institution兰州理工大学
Project Funding800000.0
CountryCN
Language中文
Document Type项目
Identifierhttp://ir.lut.edu.cn/handle/2XXMBERH/64741
Collection理学院
Recommended Citation
GB/T 7714
马连生.功能梯度材料结构的非线性稳定性理论研究.2015.
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