本文選題：蠕變　切入點：延遲時間　出處：《固體力學學報》2017年04期 　論文類型：期刊論文

【摘要】：論文研發(fā)了不銹鋼短纖維(SSFs)填充聚丙烯(PP)的新型高聚物復合材料,開展了在不同的蠕變荷載下材料的蠕變行為研究.實驗證實,在相同的持載時間條件下,蠕變變形與蠕變載荷之間呈非線性關系,這個現(xiàn)象用傳統(tǒng)的線性粘彈性理論難以解釋.論文采用延遲時間與蠕變荷載相關的觀點,對蠕變變形-蠕變載荷的非線性現(xiàn)象進行分析,發(fā)現(xiàn)了在對數(shù)坐標下延遲時間與蠕變載荷之間存在線性關系,從而得到了延遲時間與蠕變載荷之間的冪律關系.進一步的分析指出,蠕變載荷提升導致延遲時間增加的機理主要由材料體系的損傷所誘發(fā).
[Abstract]:In this paper, a new polymer composite filled with short stainless steel fiber (SSFs) was developed, and the creep behavior of the composite was studied under different creep loads. There is a nonlinear relationship between creep deformation and creep load, which is difficult to be explained by the traditional linear viscoelastic theory. The nonlinear phenomenon of creep deformation-creep load is analyzed. It is found that there is a linear relationship between the delay time and the creep load in logarithmic coordinates. The power law relationship between the delay time and the creep load is obtained. Further analysis shows that the mechanism of the increase of the delay time caused by the creep load increase is mainly induced by the damage of the material system.
【作者單位】： 寧波大學機械工程與力學學院;北京大學工學院材料科學與工程系;中國工程物理研究院流體物理研究所沖擊波物理與爆轟物理國防科技重點實驗室;
【基金】：國家自然科學基金資助項目(11472141) 國家自然科學基金委員會—中國工程物理研究院“NSAF”聯(lián)合基金(U1330101)資助
【分類號】：TB33
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本文編號：1630528