Article(id=1243306315699826875, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1243306309064442584, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1007-7294.2025.05.008, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1732032000000, receivedDateStr=2024-11-20, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1774356925177, onlineDateStr=2026-03-24, pubDate=1747670400000, pubDateStr=2025-05-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1774356925177, onlineIssueDateStr=2026-03-24, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1774356925177, creator=13701087609, updateTime=1774356925177, updator=13701087609, issue=Issue{id=1243306309064442584, tenantId=1146029695717560320, journalId=1240685776644648972, year='2025', volume='29', issue='5', pageStart='681', pageEnd='848', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1774356923595, creator=13701087609, updateTime=1774357065180, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1243306902965301262, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1243306309064442584, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1243306902965301263, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1243306309064442584, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=755, endPage=766, ext={EN=ArticleExt(id=1243306315980845249, articleId=1243306315699826875, tenantId=1146029695717560320, journalId=1240685776644648972, language=EN, title=Accelerated creep test method of PMMA considering the influence of temperature and stress, columnId=1242129251223274417, journalTitle=Journal of Ship Mechanics, columnName=Structural Mechanics, runingTitle=null, highlight=null, articleAbstract=
An accelerated creep test method for deep-sea equipment viewport window was proposed in this paper based on the sensitivity of PMMA (Polymethyl methacrylate) to temperature and stress. A modified creep constitutive equation based on aging theory was proposed by introducing the influence function of temperature. The uniaxial compressive creep tests at different temperature and stress levels were carried out, and the creep constitutive relation of PMMA was obtained by stepwise fitting method. The conversion relationship of the creep behavior of the viewport under different temperatures and pressures was obtained by the finite element creep analysis. The accelerated creep test method of the viewport model under the condition of raised temperature and increased pressure was proposed, and the comparison between the test results and the calculated results was completed. It is shown that the stress sensitivity of the uniaxial compressive creep behavior of PMMA is related to temperature. The finite element solution of the conversion coefficient of viewport’s creep deformation under different temperatures and pressures is different from the calculated value. The results of the viewport model are in good agreement with those of finite element creep analysis. In conclusion, in a certain temperature and stress range, the creep constitutive relation of PMMA obtained in this paper can well describe the law of uniaxial compressive creep behavior, and that of the viewport can be well simulated by the finite element creep analysis. The calculation results show that the conversion coefficient of viewport’s creep displacements between conditions of 25 °C & 26.6 MPa and 3 °C & 20 MPa is 12.2, and this coefficient can provide a basis for the accelerated creep test.
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本文提出一种基于有机玻璃温度-应力敏感性的耐压结构加速蠕变试验方法。引入温度的影响函数,提出修正的陈化理论蠕变本构方程;开展不同温度及应力水平下的单轴压缩蠕变试验,采用分步拟合法得到有机玻璃的蠕变本构关系;通过有限元蠕变分析得到不同温度、压力下观察窗蠕变行为的换算关系,提出升温升压条件下的观察窗模型加速蠕变试验方法,并完成试验结果与计算结果的对比分析。研究表明:有机玻璃单轴压缩蠕变行为对于应力的敏感度与温度相关;不同温度、压力下的观察窗蠕变变形换算系数的有限元解与直接计算值存在差异;观察窗模型试验结果与有限元蠕变分析结果吻合良好。本文得到的蠕变本构关系能较好地描述有机玻璃在一定温度、应力范围内的单轴压缩蠕变规律,相应的有限元蠕变分析也能较好地模拟观察窗结构的蠕变行为,算例得到观察窗蠕变位移在25 °C、26.6 MPa和3 °C、20 MPa两个工况之间的换算系数为12.2,该系数可为加速蠕变试验提供依据。
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2.深海技术科学太湖实验室,江苏 无锡 214082)])], figs=[ArticleFig(id=1243306338101605100, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=EN, label=Fig.1, caption=
Compressive creep test specimen, figureFileSmall=M2QUVqceuJuamKzJpnYJ/w==, figureFileBig=IDS3R+UZzNtvP7vBZ8UNBw==, tableContent=null), ArticleFig(id=1243306338189685491, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=CN, label=图1, caption=
压缩蠕变试验试样, figureFileSmall=M2QUVqceuJuamKzJpnYJ/w==, figureFileBig=IDS3R+UZzNtvP7vBZ8UNBw==, tableContent=null), ArticleFig(id=1243306338365846267, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=EN, label=Fig.2, caption=
Stepwise fitting process based on cftool of MATLAB, figureFileSmall=d8wYStfoejEiVq+9X7XuWw==, figureFileBig=QSNioBDyLa09Egj6ZdQdRg==, tableContent=null), ArticleFig(id=1243306338437149441, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=CN, label=图2, caption=
基于cftool的分步拟合流程, figureFileSmall=d8wYStfoejEiVq+9X7XuWw==, figureFileBig=QSNioBDyLa09Egj6ZdQdRg==, tableContent=null), ArticleFig(id=1243306338550395652, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=EN, label=Fig.3, caption=
Comparison between the fitting values and the test values, figureFileSmall=6/6aZUfRjQo26Cx6elu4lw==, figureFileBig=SRPalhCk+zuEREM+ungT4Q==, tableContent=null), ArticleFig(id=1243306338672030474, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=CN, label=图3, caption=
拟合值与试验值对比曲线, figureFileSmall=6/6aZUfRjQo26Cx6elu4lw==, figureFileBig=SRPalhCk+zuEREM+ungT4Q==, tableContent=null), ArticleFig(id=1243306338755916557, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=EN, label=Fig.4, caption=
Viewport model and test equipment, figureFileSmall=od+l4wEEzYzJIcnQryf4Dw==, figureFileBig=6rZNOCqoPwLIAvbuX1/i9Q==, tableContent=null), ArticleFig(id=1243306338839802641, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=CN, label=图4, caption=
观察窗模型及试验工装, figureFileSmall=od+l4wEEzYzJIcnQryf4Dw==, figureFileBig=6rZNOCqoPwLIAvbuX1/i9Q==, tableContent=null), ArticleFig(id=1243306338927883029, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=EN, label=Fig.5, caption=
Radial strain increment-time curve, figureFileSmall=sgJwwCVtGZvc2taw8x37oA==, figureFileBig=njd4W1vwvzuZERxebII01A==, tableContent=null), ArticleFig(id=1243306339020157717, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=CN, label=图5, caption=
径向应变增量-时间曲线, figureFileSmall=sgJwwCVtGZvc2taw8x37oA==, figureFileBig=njd4W1vwvzuZERxebII01A==, tableContent=null), ArticleFig(id=1243306339104043800, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=EN, label=Fig.6, caption=
Axial displacement increment-time curve, figureFileSmall=wd84N40wiRW97zj5d1BMSg==, figureFileBig=zZ/yOfGYiBSiiJNMFVxY0Q==, tableContent=null), ArticleFig(id=1243306339284398874, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=CN, label=图6, caption=
轴向位移增量-时间曲线, figureFileSmall=wd84N40wiRW97zj5d1BMSg==, figureFileBig=zZ/yOfGYiBSiiJNMFVxY0Q==, tableContent=null), ArticleFig(id=1243306339351507743, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=EN, label=Fig.7, caption=
Arrangement of strain gauges on the viewport, figureFileSmall=vpLyOjvFL8gRJbUW4x7sdg==, figureFileBig=tQmZQw8ReCUhU9/ohM3GYA==, tableContent=null), ArticleFig(id=1243306339435393827, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=CN, label=图7, caption=
窗玻璃应变片布置图, figureFileSmall=vpLyOjvFL8gRJbUW4x7sdg==, figureFileBig=tQmZQw8ReCUhU9/ohM3GYA==, tableContent=null), ArticleFig(id=1243306339536057126, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=EN, label=Fig.8, caption=
Viewport model being lifted out of the pressure vessel, figureFileSmall=wuklox/XdvSy3ov+HR8vkg==, figureFileBig=/7xsgR+ohoV3s96MSxNVEQ==, tableContent=null), ArticleFig(id=1243306339607360296, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=CN, label=图8, caption=
观察窗模型出筒, figureFileSmall=wuklox/XdvSy3ov+HR8vkg==, figureFileBig=/7xsgR+ohoV3s96MSxNVEQ==, tableContent=null), ArticleFig(id=1243306339682857772, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=EN, label=Fig.9, caption=
Pressure history of creep test, figureFileSmall=kJI56t2UJeioN2GNgyoc5A==, figureFileBig=5Jmk4RyzdPOWcfwNDBBTUA==, tableContent=null), ArticleFig(id=1243306339745772338, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=CN, label=图9, caption=
试验压力时间历程, figureFileSmall=kJI56t2UJeioN2GNgyoc5A==, figureFileBig=5Jmk4RyzdPOWcfwNDBBTUA==, tableContent=null), ArticleFig(id=1243306339838047027, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=EN, label=Fig.10, caption=
Viewport model after test, figureFileSmall=hZ4lz76ITa3xPRWXC3S92g==, figureFileBig=YtgGpRgjIwNFxBas6x5kPQ==, tableContent=null), ArticleFig(id=1243306339909350197, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=CN, label=图10, caption=
试验后的观察窗模型, figureFileSmall=hZ4lz76ITa3xPRWXC3S92g==, figureFileBig=YtgGpRgjIwNFxBas6x5kPQ==, tableContent=null), ArticleFig(id=1243306340018402106, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=EN, label=Fig.11, caption=
Comparison of the strain curves at the center of the high pressure surface of the viewport during the pressure holding stage, figureFileSmall=D510x+jmcsQH0QOqwDL2Yg==, figureFileBig=Fw95Lc7RFD4vF66Sn4VO6w==, tableContent=null), ArticleFig(id=1243306340119065404, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=CN, label=图11, caption=
保载阶段,观察窗高压面中心的应变对比曲线, figureFileSmall=D510x+jmcsQH0QOqwDL2Yg==, figureFileBig=Fw95Lc7RFD4vF66Sn4VO6w==, tableContent=null), ArticleFig(id=1243306340223923011, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=EN, label=Fig.12, caption=
Comparison of the strain curves at r=30 points of the high pressure surface of the viewport during the pressure holding stage, figureFileSmall=CzkTUsvvBsyqHLwtOWP1xA==, figureFileBig=vF4u2AdC7zBrDPEsSw/jRg==, tableContent=null), ArticleFig(id=1243306340316197703, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=CN, label=图12, caption=
保载阶段,观察窗高压面r=30点的应变对比曲线, figureFileSmall=CzkTUsvvBsyqHLwtOWP1xA==, figureFileBig=vF4u2AdC7zBrDPEsSw/jRg==, tableContent=null), ArticleFig(id=1243306340412666700, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=EN, label=Tab.1, caption=
Quantities of creep time curve data at different stress and temperature levels
, figureFileSmall=null, figureFileBig=null, tableContent=
| 3 °C | 15 °C | 25 °C | 40 °C |
|---|
| 20 MPa | 317 | 316 | 317 | 317 |
| 30 MPa | 377 | 317 | 317 | 316 |
| 40 MPa | 378 | 378 | 378 | 317 |
), ArticleFig(id=1243306340504941389, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=CN, label=表1, caption=
不同应力、温度水平的蠕变-时间曲线数据量统计
, figureFileSmall=null, figureFileBig=null, tableContent=
| 3 °C | 15 °C | 25 °C | 40 °C |
|---|
| 20 MPa | 317 | 316 | 317 | 317 |
| 30 MPa | 377 | 317 | 317 | 316 |
| 40 MPa | 378 | 378 | 378 | 317 |
), ArticleFig(id=1243306340584633170, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=EN, label=Tab.2, caption=
Fitting results of Step 1
, figureFileSmall=null, figureFileBig=null, tableContent=
| 温度 | AIi | nIi | mi | r2 |
|---|
| 276.15K | 0.000 873 2 | 1.509 | 0.2110 | 0.9850 |
| 288.15K | 0.000 449 6 | 1.726 | 0.2301 | 0.9881 |
| 298.15K | 0.000 253 3 | 1.914 | 0.2334 | 0.9905 |
| 313.15K | 5.6550E-05 | 2.427 | 0.2788 | 0.9908 |
), ArticleFig(id=1243306342073611090, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=CN, label=表2, caption=
步骤一拟合结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 温度 | AIi | nIi | mi | r2 |
|---|
| 276.15K | 0.000 873 2 | 1.509 | 0.2110 | 0.9850 |
| 288.15K | 0.000 449 6 | 1.726 | 0.2301 | 0.9881 |
| 298.15K | 0.000 253 3 | 1.914 | 0.2334 | 0.9905 |
| 313.15K | 5.6550E-05 | 2.427 | 0.2788 | 0.9908 |
), ArticleFig(id=1243306342144914262, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=EN, label=Tab.3, caption=
Fitting results of Step 3
, figureFileSmall=null, figureFileBig=null, tableContent=
| 温度 | AIIi | nIIi | m | r2 |
|---|
| 276.15 K | 0.000 819 9 | 1.506 | 0.2383 | 0.9826 |
| 288.15 K | 0.000 440 2 | 1.726 | 0.2383 | 0.9880 |
| 298.15 K | 0.000 251 8 | 1.912 | 0.2383 | 0.9905 |
| 313.15 K | 6.3300E-05 | 2.424 | 0.2383 | 0.9880 |
), ArticleFig(id=1243306342245577558, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=CN, label=表3, caption=
步骤三拟合结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 温度 | AIIi | nIIi | m | r2 |
|---|
| 276.15 K | 0.000 819 9 | 1.506 | 0.2383 | 0.9826 |
| 288.15 K | 0.000 440 2 | 1.726 | 0.2383 | 0.9880 |
| 298.15 K | 0.000 251 8 | 1.912 | 0.2383 | 0.9905 |
| 313.15 K | 6.3300E-05 | 2.424 | 0.2383 | 0.9880 |
), ArticleFig(id=1243306342312686425, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=EN, label=Tab.4, caption=
Fitting results of Step 4
, figureFileSmall=null, figureFileBig=null, tableContent=
| 拟合参数 | B | C | D | r2 |
|---|
| 拟合值 | 3.304E-18 | 1.8900E4 | 2.9390E2 | 0.9910 |
), ArticleFig(id=1243306342400766813, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=CN, label=表4, caption=
步骤四拟合结果
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| 拟合参数 | B | C | D | r2 |
|---|
| 拟合值 | 3.304E-18 | 1.8900E4 | 2.9390E2 | 0.9910 |
), ArticleFig(id=1243306342480458591, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=EN, label=Tab.5, caption=
Fitting results of Step 5
, figureFileSmall=null, figureFileBig=null, tableContent=
| 温度 | B | C | D | nIIIi | m | r2 |
|---|
| 276.15K | 3.304E-18 | 1.8900E4 | 2.9390E2 | 1.503 | 0.2383 | 0.9826 |
| 288.15K | 3.304E-18 | 1.8900E4 | 2.9390E2 | 1.741 | 0.2383 | 0.9880 |
| 298.15K | 3.304E-18 | 1.8900E4 | 2.9390E2 | 1.923 | 0.2383 | 0.9905 |
| 313.15K | 3.304E-18 | 1.8900E4 | 2.9390E2 | 2.272 | 0.2383 | 0.9880 |
), ArticleFig(id=1243306342547567454, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=CN, label=表5, caption=
步骤五拟合结果
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| 温度 | B | C | D | nIIIi | m | r2 |
|---|
| 276.15K | 3.304E-18 | 1.8900E4 | 2.9390E2 | 1.503 | 0.2383 | 0.9826 |
| 288.15K | 3.304E-18 | 1.8900E4 | 2.9390E2 | 1.741 | 0.2383 | 0.9880 |
| 298.15K | 3.304E-18 | 1.8900E4 | 2.9390E2 | 1.923 | 0.2383 | 0.9905 |
| 313.15K | 3.304E-18 | 1.8900E4 | 2.9390E2 | 2.272 | 0.2383 | 0.9880 |
), ArticleFig(id=1243306342627259236, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=EN, label=Tab.6, caption=
Fitting results of Step 6
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| 拟合参数 | a | b | r2 |
|---|
| 拟合值 | 2.0658E-2 | -4.2116 | 0.9971 |
), ArticleFig(id=1243306342702756709, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=CN, label=表6, caption=
步骤六拟合结果
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| 拟合参数 | a | b | r2 |
|---|
| 拟合值 | 2.0658E-2 | -4.2116 | 0.9971 |
), ArticleFig(id=1243306342803420007, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=EN, label=Tab.7, caption=
Main inputs of the creep analysis of viewport models
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| 编号 | 温度/°C | 杨氏模量/MPa | 蠕变本构方程 | ANSYS参数设置 | 蠕变时间/h |
|---|
| C1 | C2 | C3 |
|---|
| 模型一 | 3 | 3201 | εc(t,σ)=8.2807×10-6σ1.4931·t0.2383 | 1.9733E-6 | 1.4931 | -0.7617 | 8760 |
| 模型二 | 25 | 2839 | εc(t,σ)=2.4155×10-6σ1.9476·t0.2383 | 5.7562E-7 | 1.9476 | -0.7617 | 720 |
), ArticleFig(id=1243306342870528875, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=CN, label=表7, caption=
观察窗蠕变分析所需的相关输入
, figureFileSmall=null, figureFileBig=null, tableContent=
| 编号 | 温度/°C | 杨氏模量/MPa | 蠕变本构方程 | ANSYS参数设置 | 蠕变时间/h |
|---|
| C1 | C2 | C3 |
|---|
| 模型一 | 3 | 3201 | εc(t,σ)=8.2807×10-6σ1.4931·t0.2383 | 1.9733E-6 | 1.4931 | -0.7617 | 8760 |
| 模型二 | 25 | 2839 | εc(t,σ)=2.4155×10-6σ1.9476·t0.2383 | 5.7562E-7 | 1.9476 | -0.7617 | 720 |
), ArticleFig(id=1243306342954414957, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=EN, label=Tab.8, caption=
Errors between finite element calculation and test
, figureFileSmall=null, figureFileBig=null, tableContent=
| 有限元计算时刻/h | 试验测试时刻/h | 误差/% |
|---|
| r=0 mm,径向应变 | r=30 mm,径向应变 | r=0 mm,周向应变 | r=30 mm,周向应变 |
|---|
| 1E-08 | 0.00 | -2.91% | -3.28% | 2.72% | -0.07% |
| 72 | 71.68 | 4.73% | 3.07% | 7.26% | 4.08% |
| 96 | 94.68 | 3.97% | 2.52% | 6.47% | 3.27% |
| 120 | 114.68 | 4.35% | 2.98% | 6.99% | 3.68% |
| 240 | 238.68 | 7.94% | 6.66% | 10.54% | 6.79% |
| 480 | 477.36 | 10.13% | 9.09% | 12.08% | 8.59% |
| 600 | 599.97 | 11.15% | 10.04% | 13.28% | 9.33% |
), ArticleFig(id=1243306343029912433, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306315699826875, language=CN, label=表8, caption=
有限元计算值与试验值误差统计表
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| 有限元计算时刻/h | 试验测试时刻/h | 误差/% |
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| r=0 mm,径向应变 | r=30 mm,径向应变 | r=0 mm,周向应变 | r=30 mm,周向应变 |
|---|
| 1E-08 | 0.00 | -2.91% | -3.28% | 2.72% | -0.07% |
| 72 | 71.68 | 4.73% | 3.07% | 7.26% | 4.08% |
| 96 | 94.68 | 3.97% | 2.52% | 6.47% | 3.27% |
| 120 | 114.68 | 4.35% | 2.98% | 6.99% | 3.68% |
| 240 | 238.68 | 7.94% | 6.66% | 10.54% | 6.79% |
| 480 | 477.36 | 10.13% | 9.09% | 12.08% | 8.59% |
| 600 | 599.97 | 11.15% | 10.04% | 13.28% | 9.33% |
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