玻璃纤维
玻璃纖維
파리섬유
Fiber Glass
2015年
5期
1-6,9
,共7页
2.5维机织复合材料%静力分析%疲劳寿命%刚度退化%Miner理论
2.5維機織複閤材料%靜力分析%疲勞壽命%剛度退化%Miner理論
2.5유궤직복합재료%정력분석%피로수명%강도퇴화%Miner이론
2 . 5-dimensional woven composite%static loading analysis%fatigue life%degradation of stiffness%Miner Theory
对2．5维机织复合材料进行了静力分析，在受拉伸载荷的情况下将其视为经纱层和纬纱层组合而成的层合板。以单向板疲劳寿命预测为基础，考虑到疲劳加载过程中刚度退化导致的应力重新分配，采用Miner理论对其拉-拉疲劳寿命进行预测，且对该方法进行了试验验证，为预测2．5维机织复合材料的疲劳寿命提供了一种途径。
對2．5維機織複閤材料進行瞭靜力分析，在受拉伸載荷的情況下將其視為經紗層和緯紗層組閤而成的層閤闆。以單嚮闆疲勞壽命預測為基礎，攷慮到疲勞加載過程中剛度退化導緻的應力重新分配，採用Miner理論對其拉-拉疲勞壽命進行預測，且對該方法進行瞭試驗驗證，為預測2．5維機織複閤材料的疲勞壽命提供瞭一種途徑。
대2．5유궤직복합재료진행료정력분석，재수랍신재하적정황하장기시위경사층화위사층조합이성적층합판。이단향판피로수명예측위기출，고필도피로가재과정중강도퇴화도치적응력중신분배，채용Miner이론대기랍-랍피로수명진행예측，차대해방법진행료시험험증，위예측2．5유궤직복합재료적피로수명제공료일충도경。
2. 5-dimensional woven composite was subjected to static loading, and it was regarded as a laminate consisting of warp layer and weft layer under tensile loading. Based on the fatigue life prediction of unidirectional laminate , the fatigue life of 2 . 5-dimensional composites was predicted by using Miner Theory of linear fatigue dam-age accumulation and considering the stress redistribution resulting from the degradation of stiffness in the process of fatigue loading. The verification experiment result of tensile-tensile fatigue loading conformed to the prediction re-sult. This paper provides a new method for predicting the fatigue life of 2. 5-dimensional woven composites.
