考虑表面效应的硬币型纳米裂纹问题研究

项目来源

湖(略)然(略)金

项目主持人

李(略)

项目受资助机构

中(略)

项目编号

2(略)J(略)0(略)

立项年度

2(略)

立项时间

未(略)

研究期限

未(略) (略)

项目级别

省(略)

受资助金额

未(略)

学科

一(略)技(略)

学科代码

未(略)

基金类别

面(略)

关键词

表(略) (略)米(略);(略)裂(略) (略)度(略);(略) (略)u(略)c(略)f(略)t(略)N(略)s(略)e(略)r(略) (略)e(略)-(略)p(略)c(略)k(略)S(略)s(略)n(略)s(略) (略)t(略);(略)i(略)l(略)

参与者

未(略)

参与机构

未(略)

项目标书摘要:随着(略)料和结构的力学性能(略)实验和仿真表明当结(略)甚至微米量级时,其(略)观材料和结构的力学(略)虑到微纳尺度下材料(略)表面能和表面弹性影(略)性能。鉴于此,该研(略)纳米材料断裂研究。(略)纹表面效应对弹性材(略),2复合纳米材料界(略)对裂纹扩展的影响,(略)值仿真研究。研究方(略)建立相应力学模型,(略)方程,给出具体问题(略)严谨的数学求解方法(略)变换、Hankel(略)e积分变换等将力学(略)个相应积分方程,然(略)方法给出解析或数值(略)裂纹在拉伸、剪切等(略)结果发现表面弹性影(略)纹前缘周围存在塑性(略)ugdale塑性区(略)增强;基尔霍夫纳米(略)刚体转动情况下尖端(略)−3∕2的奇异性,(略)2奇异性,而贯穿裂(略)量具有传统的平方根(略)有−3∕2奇异性。(略)的可靠性、完整性和(略)义。

Applicati(略): With th(略)nt of nan(略),the mech(略)erties of(略)als and s(略)ave attra(略)ive resea(略) number o(略)ts and si(略)how that (略)ze of str(略)materials(略)nometer o(略)s effecti(略)al proper(略)ite diffe(略)hose of l(略)macroscop(略)s and str(略)sidering (略)e of spec(略)e area of(略)at micro (略)ales,the (略)rgy and s(略)ticity of(略)affect th(略)ic mechan(略)ties of m(略)d structu(略) of this,(略) consider(略)ce effect(略)ro-nanoma(略)cture.The(略)rch conta(略)rface eff(略)scaled pe(略)crack on (略)rity of t(略)ont,2the (略)f composi(略)rial inte(略)rgy and p(略) crack su(略)y on crac(略)on,3the n(略)mulation (略)mensional(略)f nanomat(略)ethod is (略)retical a(略)stly,the (略)model is (略),the syst(略)al differ(略)tions and(略)equations(略)d,and the(略)ing initi(略) value pr(略)sociated (略) given.Ri(略)ematical (略)ncluding (略)nsform,Ha(略)orm and L(略)sform,are(略) transfor(略)al-bounda(略)oblem of (略)cal model(略)respondin(略)equation.(略)ical or n(略)lutions a(略)sed on th(略)method of(略)al equati(略)ure mecha(略)oscaled c(略) tensile (略)oads is e(略)e results(略)the surfa(略)ty affect(略)nd the si(略)lastic zo(略)he crack (略)oundary o(略)le plasti(略)r torsion(略)ion is en(略)he consid(略)the surfa(略)ty.The be(略)t and str(略)nt near t(略)a rigid l(略)rchhoff n(略)ow the si(略)f − 3/2,w(略)fective s(略)has the s(略)of − 5/2,(略)ending mo(略)ress comp(略)the crack(略)the tradi(略)re-root s(略)but the e(略)ear force(略)ngularity(略)he result(略)rtant gui(略)icance fo(略)bility,in(略) safety d(略)ructures (略)d nano sc(略)

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