Article(id=1323357715141112809, tenantId=1146029695717560320, journalId=1255847867265597444, issueId=1323357687857165151, articleNumber=null, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1090598400000, receivedDateStr=2004-07-24, revisedDate=1099238400000, revisedDateStr=2004-11-01, acceptedDate=null, acceptedDateStr=null, onlineDate=1793442666087, onlineDateStr=2026-10-31, pubDate=1125849600000, pubDateStr=2005-09-05, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793442666087, onlineIssueDateStr=2026-10-31, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793442666087, creator=13701087609, updateTime=1793442666087, updator=13701087609, issue=Issue{id=1323357687857165151, tenantId=1146029695717560320, journalId=1255847867265597444, year='2005', volume='19', issue='3', pageStart='193', pageEnd='288', issueExtLink='null', onlineDate='null', pubDate='1125849600000', pubDateStr='2005-09-05', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793442659582, creator='13701087609', updateTime=1793442895350, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1323358676806926824, tenantId=1146029695717560320, journalId=1255847867265597444, issueId=1323357687857165151, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1323358676806926825, tenantId=1146029695717560320, journalId=1255847867265597444, issueId=1323357687857165151, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=264, endPage=268, ext={EN=ArticleExt(id=1323357715355022314, articleId=1323357715141112809, tenantId=1146029695717560320, journalId=1255847867265597444, language=EN, title=The Least Absolute Value Linear Fitting of D-u Line, columnId=1322942130796245184, journalTitle=Chinese Journal of High Pressure Physics, columnName=Research Note, runingTitle=null, highlight=null, articleAbstract=

The Linear relationship between shock wave velocity D and particle velocity u is very important to obtain high pressure equation of state and dynamic properties of materials under shock loading. In this paper, the least absolute value method is adopted to fit the D-u line of several kinds of materials, and comparing with the generally accepted least square method. Results show that for the experimental data which scatter small (e.g., non-porous samples), the two methods obtain almost the same results; but for the experimental data which scatter large (e.g., porous samples), the two methods obtain different results. Anyway, the least absolute value method has small average absolute error than the least square method. The reason of the different result between the two methods was addressed.

, authors=Xiu-Fang CHEN1, Gao-Bo CHEN2, Zi-Zheng GONG1, authorsList=Xiu-Fang CHEN, Gao-Bo CHEN, Zi-Zheng GONG, authorCompany=null, correspAuthors=Zi-Zheng GONG, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1323357715594097643, articleId=1323357715141112809, tenantId=1146029695717560320, journalId=1255847867265597444, language=CN, title=D-u关系的最小绝对值线性拟合法, columnId=1322942131614134466, journalTitle=高压物理学报, columnName=研究简报, runingTitle=null, highlight=null, articleAbstract=

采用最小绝对值方法对几类物质的冲击波速度D与波后粒子速度u的关系进行了直线拟合,并将其与常用的最小二乘法拟合的结果进行了比较。结果显示:对于实验数据分散性较小的密实材料(金属、离子晶体、氧化物等),两种方法拟合的线性系数一致;而对于实验数据分散性较大的一些疏松材料(包括液体等),两种方法拟合的线性系数有差异。对所有物质,最小绝对值法拟合的平均绝对误差比最小二乘法拟合的要小,因而最小绝对值法较最小二乘法有更高的准确性。同时讨论了导致这两种拟合差异的因素。

, authors=陈修芳1, 陈高波2, 龚自正1, authorsList=陈修芳, 陈高波, 龚自正, authorCompany=null, correspAuthors=龚自正, authorNote=

陈修芳(1975—),女,硕士研究生

, correspAuthorsNote=
龚自正,博士,教授,博士生导师,主要研究方向为高压物理、地球深部物理、冲击动力学. E-mail:
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陈修芳(1975—),女,硕士研究生

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陈修芳(1975—),女,硕士研究生

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D-u关系的最小绝对值线性拟合法
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陈修芳 1 , 陈高波 2 , 龚自正 1
高压物理学报 | 研究简报 2005,19(3): 264-268
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高压物理学报 |研究简报 2005 , 19 (3) : 264 -268
D-u关系的最小绝对值线性拟合法
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陈修芳1, 陈高波2, 龚自正1
作者信息
  • 1.西南交通大学物理研究所,四川 成都 610031
  • 2.武汉工业学院数理科学系,湖北 武汉 430023
通讯作者:
龚自正,博士,教授,博士生导师,主要研究方向为高压物理、地球深部物理、冲击动力学. E-mail:
作者简介:

陈修芳(1975—),女,硕士研究生

The Least Absolute Value Linear Fitting of D-u Line
Xiu-Fang CHEN1, Gao-Bo CHEN2, Zi-Zheng GONG1
Affiliations
  • 1.Institute of Physics, Southwest Jiaotong University, Chengdu 610031, China
  • 2.Department of Math and Physics, Wuhan Polytechnic University, Wuhan 430023, China
出版时间: 2005-09-05
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采用最小绝对值方法对几类物质的冲击波速度D与波后粒子速度u的关系进行了直线拟合,并将其与常用的最小二乘法拟合的结果进行了比较。结果显示:对于实验数据分散性较小的密实材料(金属、离子晶体、氧化物等),两种方法拟合的线性系数一致;而对于实验数据分散性较大的一些疏松材料(包括液体等),两种方法拟合的线性系数有差异。对所有物质,最小绝对值法拟合的平均绝对误差比最小二乘法拟合的要小,因而最小绝对值法较最小二乘法有更高的准确性。同时讨论了导致这两种拟合差异的因素。

D-u线  /  线性拟合  /  最小绝对值法  /  最小二乘法

The Linear relationship between shock wave velocity D and particle velocity u is very important to obtain high pressure equation of state and dynamic properties of materials under shock loading. In this paper, the least absolute value method is adopted to fit the D-u line of several kinds of materials, and comparing with the generally accepted least square method. Results show that for the experimental data which scatter small (e.g., non-porous samples), the two methods obtain almost the same results; but for the experimental data which scatter large (e.g., porous samples), the two methods obtain different results. Anyway, the least absolute value method has small average absolute error than the least square method. The reason of the different result between the two methods was addressed.

D-u lline  /  fitting  /  the least absolute value  /  the least square method
陈修芳, 陈高波, 龚自正. D-u关系的最小绝对值线性拟合法. 高压物理学报, 2005 , 19 (3) : 264 -268 .
Xiu-Fang CHEN, Gao-Bo CHEN, Zi-Zheng GONG. The Least Absolute Value Linear Fitting of D-u Line[J]. Chinese Journal of High Pressure Physics, 2005 , 19 (3) : 264 -268 .
  • 国家自然科学基金重大项目(10299040)
  • 国家自然科学基金面上项目(40474033)
参考文献 引证文献
排序方式:
[1]
Jing F Q. Introduction to Experimental Equation of State (2nd ed)[M]. Beijing: Science Press, 1999. 199-200. (in Chinese)
经福谦. 实验物态方程导引(第二版)[M]. 北京: 科学出版社, 1999. 199-200.
[2]
Ding L J. Numerical Computing Method[M]. Beijing: Beijing Institute of Technology Press, 1997. 127-128. (in Chinese)
丁丽娟. 数值计算方法[M]. 北京: 北京理工大学出版社, 1997. 127-128.
[3]
Stanley P. LASL Shock Hugoniot Data[Z]. Berkeley: University of California Press, 1979.
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Chen X R. Least Absolute Linear Regress (Ⅰ)[J]. Mathematical Statistics and Management, 1989, (5): 48-55. (in Chinese)
陈希孺. 最小一乘线性回归(上)[J]. 数理统计与管理, 1989, (5): 48-55.
2005年第19卷第3期
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  • 接收时间:2004-07-24
  • 首发时间:2026-10-31
  • 出版时间:2005-09-05
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出版历史
  • 收稿日期:2004-07-24
  • 修回日期:2004-11-01
基金
国家自然科学基金重大项目(10299040)
国家自然科学基金面上项目(40474033)
作者信息
    1.西南交通大学物理研究所,四川 成都 610031
    2.武汉工业学院数理科学系,湖北 武汉 430023

通讯作者:

龚自正,博士,教授,博士生导师,主要研究方向为高压物理、地球深部物理、冲击动力学. E-mail:
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2种不同金属材料的力学参数
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属
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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