本文選題：蠕變　切入點(diǎn)：延遲時(shí)間　出處：《固體力學(xué)學(xué)報(bào)》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(fù)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(shí)驗(yàn)證實(shí),在相同的持載時(shí)間條件下,蠕變變形與蠕變載荷之間呈非線性關(guān)系,這個(gè)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(shí)間與蠕變荷載相關(guān)的觀點(diǎn),對(duì)蠕變變形-蠕變載荷的非線性現(xiàn)象進(jìn)行分析,發(fā)現(xiàn)了在對(duì)數(shù)坐標(biāo)下延遲時(shí)間與蠕變載荷之間存在線性關(guān)系,從而得到了延遲時(shí)間與蠕變載荷之間的冪律關(guān)系.進(jìn)一步的分析指出,蠕變載荷提升導(dǎo)致延遲時(shí)間增加的機(jī)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(xué)機(jī)械工程與力學(xué)學(xué)院;北京大學(xué)工學(xué)院材料科學(xué)與工程系;中國(guó)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(guó)防科技重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(11472141) 國(guó)家自然科學(xué)基金委員會(huì)—中國(guó)工程物理研究院“NSAF”聯(lián)合基金(U1330101)資助
【分類號(hào)】：TB33
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本文編號(hào)：1630528