3) spherical cavity expansion
球形空腔扩张
1.
Elasto-plastic analysis of spherical cavity expansion with consideration of material dilatancy;
考虑材料剪胀性的球形空腔扩张问题的弹塑性分析
2.
Based on the spherical cavity expansion and one-dimensional consolidation,an analytical solution of consolidation around a spherical cavity is obtained,and the solution is used to analyze the dissipation of the .
基于球形空腔扩张理论和一维径向固结理论求解得到球形空腔固结解析解,并将其用于分析由透水元件位于探头锥尖部位的CPTU和BAT贯入所引起的超静孔隙水压力的消散,从而推求地基的原位固结系数。
5) critical void-growth ratio
临界空穴扩张比
1.
The critical void-growth ratio,Rc/Ro,of steel BHW60,steel 20 or steel 45 was measured quantitatively under SEM,and the measured positions are at the core of fracture surface of cylindrical tensile specimens.
利用扫描电镜测量了ＢＨＷ６０钢、２０钢和４５钢拉伸试样断口心部的临界空穴扩张比Ｒｃ／Ｒｏ，并据此分析了由于环境温度和扭转预应变等因素引起的韧脆转变过程及其细观形态。
2.
By observing the appearance of fracture zone,measuring the impurity composition and distribution and the critical void-growth ratio of the joints at normal temperature under scanning electron microscope,it discusses the distribution regulation of the critical zoid-growth ratio and fracture toughness of the joints and concludes that the.
同时使用扫描电镜、能谱分析仪观察了拉伸断口形貌，测定了夹杂物的成分、分布特征以及常温下接头的临界空穴扩张比Ｒ_ｃ／Ｒ_ｏ，讨论了Ｒ_ｃ／Ｒ_ｏ的分布规律和接头的断裂韧性。
6) Critical void growth ratio
临界空穴扩张比
1.
The fracture criteria of pressure vessel steel 16MnR are measured,and the results of the test indicates that the critical void growth ratio of 16MnR is constant,and the initial stages of ductile fracture of 16MnR correspond with R-T model.
在此基础上,对压力容器常用材料16MnR钢的断裂参量进行了测试,结果表明,16MnR钢的宏、细观临界空穴扩张比(VGC)均是不敏感于应力的材料常数,且16MnR钢韧性断裂的早期行为符合R-T模型。
补充资料：极大扩张和极小扩张
极大扩张和极小扩张
maximal and minimal extensions
极大扩张和极小扩张匡.习的司出目.公油抽lex妇心.旧;MaKcl.Ma刀‘.oe H Mll.”M田.妇oe PaC山一Pe皿朋] 一个对称算子(s笋nr贺苗c opemtor)A的极大扩张和极小扩张分别是算子牙(A的闭包，(见闭算子(cfo“月。详mtor”)和A’(A的伴随，见伴随算子(呐。int opera.tor)).A的所有闭对称扩张都出现在它们之间.极大扩张和极小扩张相等等价于A的自伴性(见自伴算子(义休.adjoint operator))，并且是自伴扩张唯一性的必要和充分条件.A.H.J’Ior朋oB，B.c.lll户、MaR撰
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参考词条