固体力学学报
固體力學學報
고체역학학보
ACTA MECHANICA SOLIDA SINICA
2010年
2期
133-141
,共9页
三维五向%编织复合材料%非线性有限元法%渐进损伤分析%强度预测
三維五嚮%編織複閤材料%非線性有限元法%漸進損傷分析%彊度預測
삼유오향%편직복합재료%비선성유한원법%점진손상분석%강도예측
3D five-directional%braided composites%nonlinear finite element methods%progressive damage analysis%strength prediction
基于五向编织复合材料连续体细观结构单胞,提出了材料的三维渐进损伤分析模型,采用非线性有限元方法并结合均匀化平均思想,建立了三维五向编织复合材料的强度预测胞元模型.经研究典型编织角材料在拉伸载荷作用下细观损伤的发生及演化过程,分析了材料的细观失效机理,获得了材料的宏观拉伸应力应变曲线和极限破坏强度,并详细探讨了工艺参数编织角对材料宏观力学性能的影响规律.
基于五嚮編織複閤材料連續體細觀結構單胞,提齣瞭材料的三維漸進損傷分析模型,採用非線性有限元方法併結閤均勻化平均思想,建立瞭三維五嚮編織複閤材料的彊度預測胞元模型.經研究典型編織角材料在拉伸載荷作用下細觀損傷的髮生及縯化過程,分析瞭材料的細觀失效機理,穫得瞭材料的宏觀拉伸應力應變麯線和極限破壞彊度,併詳細探討瞭工藝參數編織角對材料宏觀力學性能的影響規律.
기우오향편직복합재료련속체세관결구단포,제출료재료적삼유점진손상분석모형,채용비선성유한원방법병결합균균화평균사상,건립료삼유오향편직복합재료적강도예측포원모형.경연구전형편직각재료재랍신재하작용하세관손상적발생급연화과정,분석료재료적세관실효궤리,획득료재료적굉관랍신응력응변곡선화겁한파배강도,병상세탐토료공예삼수편직각대재료굉관역학성능적영향규률.
A representative volume element (RVE)-based micromechanical damage model is presented to predict the damage propagation and strength of 3D five-directional braided composites by using the nonlinear finite element method.By adopting the software ABAQUS,the progressive damage of 3D five-directional braided composites with typical braiding angle was studied subjected to tensile loading.The macroscopic stress-strain curve and ultimate strength of the sample were obtained.Numerical results verify the effectiveness of the model.Effect of braiding angle on the mechanical behavior of 3D five-directional braided composites was discussed in detail.Some valuable conclusions are drawn herein.
