本文選題：沖擊拉伸 + 碎裂��； 參考：《力學(xué)進(jìn)展》2016年00期

【摘要】：固體材料在沖擊拉伸載荷作用下常常會(huì)斷裂成多個(gè)碎片(碎片化),固體材料碎片化的物理機(jī)制是多點(diǎn)損傷同時(shí)在固體中成核和發(fā)展,導(dǎo)致固體多處破壞.自Mott對(duì)固體的動(dòng)態(tài)碎裂問(wèn)題進(jìn)行了開(kāi)創(chuàng)性研究后,幾十年來(lái),對(duì)固體動(dòng)態(tài)碎裂機(jī)制的研究一直是應(yīng)用物理學(xué)、力學(xué)、航天和兵器工程等領(lǐng)域共同關(guān)心的重要課題.本文介紹了在沖擊拉伸載荷作用下固體的動(dòng)態(tài)碎裂研究的發(fā)展歷史,給出相關(guān)的理論分析、實(shí)驗(yàn)研究和數(shù)值模擬的研究進(jìn)展,特別針對(duì)現(xiàn)有的各種關(guān)于碎片尺度、碎片分布、以及碎片化物理機(jī)制的理論模型進(jìn)行了較詳盡的闡述和討論,最后指出現(xiàn)有實(shí)驗(yàn)和理論研究中仍然存在的關(guān)鍵科學(xué)問(wèn)題及進(jìn)一步的研究展望.
[Abstract]:Solid materials often break into multiple fragments under impact tensile loading. The physical mechanism of fragmentation of solid materials is that multi-point damage nucleates and develops in solids at the same time resulting in multi-site destruction of solids. Since the pioneering research on the dynamic fragmentation of solids by Mott, the research on the mechanism of dynamic fragmentation of solids has been an important subject of common concern in the fields of applied physics, mechanics, spaceflight and weapon engineering in recent decades. In this paper, the development history of dynamic fragmentation of solids under impact tensile loading is introduced, and the related theoretical analysis, experimental research and numerical simulation are given. The theoretical model of fragmentation physical mechanism is expounded and discussed in detail. At last, the key scientific problems and the prospects for further research are pointed out.
【作者單位】： 寧波大學(xué)教育部沖擊與安全工程重點(diǎn)實(shí)驗(yàn)室;中國(guó)科學(xué)技術(shù)大學(xué)中科院材料力學(xué)行為和設(shè)計(jì)重點(diǎn)實(shí)驗(yàn)室;香港科技大學(xué)機(jī)械與航空航天工程系;
【基金】：國(guó)家自然科學(xué)基金(10972108,11402130,11390361) 浙江省“力學(xué)”重中之重學(xué)科開(kāi)放基金資助項(xiàng)目
【分類(lèi)號(hào)】：O346.1
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本文編號(hào)：1935783