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周长-面积关系及分形维数的计算机模拟 被引量:2
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作者 王晓伟 董连科 龙期威 《高压物理学报》 CAS CSCD 北大核心 1991年第2期124-129,共6页
本文利用分形理论中周长-面积关系的基本概念,对初始形状为三角形的不同大小的Koch曲线围成的岛,模拟了不同条件下,测量D值的变化规律,并进一步指出应用这一关系所应满足的条件及实际测量中有限层次的影响。
关键词 周长 面积 分形维数 计算机模拟
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FRACTAL ANALYSIS OF IMPACT FRACTURE IN STEEL
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作者 SU Hui ZHANG Yugui YAN Zhenqi Northeast University of Technology,Shenyang,China YAN Zhenqi Professor Dept.of Materials Science and Engineering,Northeast University of Technology,Shenyang 110006,China 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 1990年第3期226-228,共3页
By means of fractal analysis,the fractal dimension with relation to the impact toughness,im- pact fracture characteristics and mierostructures of steel under low temperature impact have been investigated.Experimental ... By means of fractal analysis,the fractal dimension with relation to the impact toughness,im- pact fracture characteristics and mierostructures of steel under low temperature impact have been investigated.Experimental results show that the logarithms of impact toughness in- creases monotonically with the increase of fractal dimension.The microstruetures have a great influence on fraetal dimension.There is an appropriate correlation between fraetal dimension and fracture mechanism. 展开更多
关键词 fractal dimension imnpact toughness yardstick length FRACTURE
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