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In order to simulate the shot peening process and realize the rapid prediction of the shot peening effect, a random multi-shot pellet shot peening strengthening model was established based on Abaqus software using the discrete element method-finite element method (DEM-FEM) coupling, and the TC4 titanium alloy was used as the research object to carry out the shot peening strengthening test to verify the accuracy of the coupling model. The Box-Behnken design (BBD) method was used to design a three-factor and three-level shot peening simulation test scheme for the three process parameters of projectile size, shot peening speed and shot peening coverage.The surface residual stress value and surface roughness value were obtained by simulation analysis, and the numerical fitting was carried out by Design-Expert software. Finally, the function models between the shot peening process parameters and the surface residual stress or surface roughness were obtained, the interaction between the three factors of projectile size,shot peening speed and shot peening coverage was analyzed by the response surface method, and the influence law of shot peening strengthening effect was analyzed.The results show that the error between the results of the response surface prediction model and the simulation calculation results is less than 5%, the established response surface prediction model has high approximate accuracy and reliability,and the effective prediction of shot peening effect can be achieved by using this model.
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为了模拟喷丸强化过程,实现喷丸强化效果快速预测,基于Abaqus软件采用离散元法-有限元法(Discrete Element Method-Finite Element Method, DEM-FEM)耦合建立随机多丸粒喷丸强化模型,并以TC4钛合金为研究对象,通过喷丸强化试验来验证耦合模型的准确性。采用Box-Behnken设计(Box-Behnken Design, BBD)法,针对弹丸大小、喷丸速度和喷丸覆盖率3个工艺参数设计了三因素三水平的喷丸仿真试验方案,采用仿真分析获得表面残余应力值及表面粗糙度值,并通过Design-Expert软件进行数值拟合,最终得到喷丸工艺参数与表面残余应力和表面粗糙度之间的函数模型,采用响应面法分析弹丸大小、喷丸速度、喷丸覆盖率三因素之间的交互作用以及对喷丸强化效果的影响规律。结果表明,响应面预测模型结果与仿真计算结果误差低于5%,所建立的响应面预测模型具有较高的近似精度和可靠性,利用此模型可实现喷丸强化效果的有效预测。
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张洪伟,男,1978年生,山东济南人,博士,副教授,硕士研究生导师;主要研究方向为表面强化、机械加工变形及数值模拟;E-mail:Zhanghw@bipt.edu.cn。
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张洪伟,男,1978年生,山东济南人,博士,副教授,硕士研究生导师;主要研究方向为表面强化、机械加工变形及数值模拟;E-mail:Zhanghw@bipt.edu.cn。
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Road map of DEM-FEM coupling technology, figureFileSmall=pyKa2OnsfrB/tfMxEtumig==, figureFileBig=EIk8qBjHZehOorjcWTJM+Q==, tableContent=null), ArticleFig(id=1240627619616584232, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=CN, label=图1, caption=
DEM-FEM耦合技术路线图, figureFileSmall=pyKa2OnsfrB/tfMxEtumig==, figureFileBig=EIk8qBjHZehOorjcWTJM+Q==, tableContent=null), ArticleFig(id=1240627619717247529, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=EN, label=Fig.2, caption=
Simulation model of DEM-FEM shot peening, figureFileSmall=OcUScrwvg8ZKiXWFjJiEpg==, figureFileBig=/8vY2SPFM2eJf75IjvFBsw==, tableContent=null), ArticleFig(id=1240627619792745002, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=CN, label=图2, caption=
DEM-FEM喷丸仿真模型, figureFileSmall=OcUScrwvg8ZKiXWFjJiEpg==, figureFileBig=/8vY2SPFM2eJf75IjvFBsw==, tableContent=null), ArticleFig(id=1240627619855659563, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=EN, label=Fig.3, caption=
Schematic diagram of shot peening specimens, figureFileSmall=x9J8EvuaTXeSyBaFZ8TcDA==, figureFileBig=u+cxmmSsz28vwcEsQ8ZARA==, tableContent=null), ArticleFig(id=1240627619922768428, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=CN, label=图3, caption=
喷丸试件示意图, figureFileSmall=x9J8EvuaTXeSyBaFZ8TcDA==, figureFileBig=u+cxmmSsz28vwcEsQ8ZARA==, tableContent=null), ArticleFig(id=1240627619989877293, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=EN, label=Fig.4, caption=
Comparison of surface residual stress simulation and test results, figureFileSmall=VKeAOt5da4iHwr2KkZuosQ==, figureFileBig=U32j9y5Gf7n7+gmvS1RVLQ==, tableContent=null), ArticleFig(id=1240627620061180462, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=CN, label=图4, caption=
表面残余应力仿真与试验结果对比, figureFileSmall=VKeAOt5da4iHwr2KkZuosQ==, figureFileBig=U32j9y5Gf7n7+gmvS1RVLQ==, tableContent=null), ArticleFig(id=1240627620153455151, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=EN, label=Fig.5, caption=
Comparison of surface roughness simulation and test results, figureFileSmall=7R+u6rJCBYkzriepKCcgFg==, figureFileBig=5YnsOZzt29vAkafC92gjtg==, tableContent=null), ArticleFig(id=1240627620228952624, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=CN, label=图5, caption=
表面粗糙度仿真与试验结果对比, figureFileSmall=7R+u6rJCBYkzriepKCcgFg==, figureFileBig=5YnsOZzt29vAkafC92gjtg==, tableContent=null), ArticleFig(id=1240627620296061489, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=EN, label=Fig.6, caption=
Scatter distribution of test and predictive value of surface residual stress, figureFileSmall=m+r7/L917TiHd4RhnvErqQ==, figureFileBig=TPyEcFTz8OEwrRv5BoO8Aw==, tableContent=null), ArticleFig(id=1240627620379947570, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=CN, label=图6, caption=
表面残余应力试验值与预测值的散点分布, figureFileSmall=m+r7/L917TiHd4RhnvErqQ==, figureFileBig=TPyEcFTz8OEwrRv5BoO8Aw==, tableContent=null), ArticleFig(id=1240627620442862131, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=EN, label=Fig.7, caption=
Disturbance curves of surface residual stress of each factor near the center point, figureFileSmall=xu0Lb6V6w4TIkettDSjxZA==, figureFileBig=u+cQYto8WASEMzfBjhCzIw==, tableContent=null), ArticleFig(id=1240627620509970996, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=CN, label=图7, caption=
各因素在中心点附近的表面残余应力扰动曲线, figureFileSmall=xu0Lb6V6w4TIkettDSjxZA==, figureFileBig=u+cQYto8WASEMzfBjhCzIw==, tableContent=null), ArticleFig(id=1240627620589662773, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=EN, label=Fig.8, caption=
Interactive effect of shot peening speed and shot peening coverage on surface residual compressive stress, figureFileSmall=yIIXrayLZoOsQltVmpMgvQ==, figureFileBig=nSgBJRuPgTrj1DCsELP7jA==, tableContent=null), ArticleFig(id=1240627620656771638, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=CN, label=图8, caption=
喷丸速度和喷丸覆盖率对表面残余压应力的交互影响, figureFileSmall=yIIXrayLZoOsQltVmpMgvQ==, figureFileBig=nSgBJRuPgTrj1DCsELP7jA==, tableContent=null), ArticleFig(id=1240627620736463415, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=EN, label=Fig.9, caption=
Scatter distribution of test and predictive value of surface roughness, figureFileSmall=BIz0jnI1wAnPJXy3wElvAg==, figureFileBig=3YYJLrH+uMi6dVJeulymDA==, tableContent=null), ArticleFig(id=1240627620820349496, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=CN, label=图9, caption=
表面粗糙度试验值与预测值的散点分布, figureFileSmall=BIz0jnI1wAnPJXy3wElvAg==, figureFileBig=3YYJLrH+uMi6dVJeulymDA==, tableContent=null), ArticleFig(id=1240627620908429881, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=EN, label=Fig.10, caption=
Disturbance curves of surface roughness of each factor near the center point, figureFileSmall=e3J5+Z3TzN7hgijY6KlSDg==, figureFileBig=3difO3pkL3AFHUqhN7nPIg==, tableContent=null), ArticleFig(id=1240627620975538746, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=CN, label=图10, caption=
各因素在中心点附近的表面粗糙度扰动曲线, figureFileSmall=e3J5+Z3TzN7hgijY6KlSDg==, figureFileBig=3difO3pkL3AFHUqhN7nPIg==, tableContent=null), ArticleFig(id=1240627621042647611, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=EN, label=Fig.11, caption=
Interactive effect of particle diameter and coverage on the surface roughness, figureFileSmall=8ZP1JVw5Dr9YxhTAQ5df1g==, figureFileBig=9YDjmidiD8+/UCiv6NI6Ww==, tableContent=null), ArticleFig(id=1240627621105562172, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=CN, label=图11, caption=
丸粒直径和覆盖率对表面粗糙度的交互影响, figureFileSmall=8ZP1JVw5Dr9YxhTAQ5df1g==, figureFileBig=9YDjmidiD8+/UCiv6NI6Ww==, tableContent=null), ArticleFig(id=1240627621172671037, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=EN, label=Tab.1, caption=
Basic mechanical parameters of materials
, figureFileSmall=null, figureFileBig=null, tableContent=
材料 Material | 密度 Density/(g/cm3) | 弹性模量 Modulus of elasticity/GPa | 泊松比 Poisson ratio |
|---|
TC4钛合金 TC4 titanium alloy | 4.43 | 114 | 0.342 |
铸钢弹丸 Cast steel projectile | 7.8 | 210 | 0.3 |
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材料基本力学参数
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材料 Material | 密度 Density/(g/cm3) | 弹性模量 Modulus of elasticity/GPa | 泊松比 Poisson ratio |
|---|
TC4钛合金 TC4 titanium alloy | 4.43 | 114 | 0.342 |
铸钢弹丸 Cast steel projectile | 7.8 | 210 | 0.3 |
), ArticleFig(id=1240627621306888767, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=EN, label=Tab.2, caption=
Parameters of J-C model of TC4 titanium alloy
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| 参数 Parameter | A/MPa | B/MPa | n | C' | m |
|---|
| 值Value | 1 098 | 1 098 | 0.93 | 0.014 | 1.1 |
), ArticleFig(id=1240627621386580544, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=CN, label=表2, caption=
TC4钛合金J-C模型参数
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| 参数 Parameter | A/MPa | B/MPa | n | C' | m |
|---|
| 值Value | 1 098 | 1 098 | 0.93 | 0.014 | 1.1 |
), ArticleFig(id=1240627621457883713, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=EN, label=Tab.3, caption=
Process parameters of shot peening
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喷丸工艺 Shot peening process | 喷丸强度 Shot peening strength/mmA | 喷丸覆盖率 Shot peening coverage/% |
|---|
工艺1 Process 1 | 0.1 | 100、200、300 |
工艺2 Process 2 | 0.2 | 100、200、300 |
工艺3 Process 3 | 0.3 | 100、200、300 |
), ArticleFig(id=1240627622917501506, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=CN, label=表3, caption=
喷丸强化工艺参数
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喷丸工艺 Shot peening process | 喷丸强度 Shot peening strength/mmA | 喷丸覆盖率 Shot peening coverage/% |
|---|
工艺1 Process 1 | 0.1 | 100、200、300 |
工艺2 Process 2 | 0.2 | 100、200、300 |
工艺3 Process 3 | 0.3 | 100、200、300 |
), ArticleFig(id=1240627623005581891, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=EN, label=Tab.4, caption=
Design factor and factor level
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设计因子 Design factor | 因子水平Factor level |
|---|
| -1 | 0 | 1 |
|---|
| 丸粒直径 Particle diameter/mm | 0.18 | 0.28 | 0.43 |
| 喷丸速度 Shot peening speed/(m/s) | 60 | 80 | 100 |
| 喷丸覆盖率 Shot peening coverage/% | 100 | 200 | 300 |
), ArticleFig(id=1240627623068496452, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=CN, label=表4, caption=
设计因子和因子水平
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设计因子 Design factor | 因子水平Factor level |
|---|
| -1 | 0 | 1 |
|---|
| 丸粒直径 Particle diameter/mm | 0.18 | 0.28 | 0.43 |
| 喷丸速度 Shot peening speed/(m/s) | 60 | 80 | 100 |
| 喷丸覆盖率 Shot peening coverage/% | 100 | 200 | 300 |
), ArticleFig(id=1240627623156576837, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=EN, label=Tab.5, caption=
Test parameters and simulation results
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| 序号Serial number | 设计参数 Design parameter | 响应值 Response value |
|---|
| 丸粒直径Particle diameter/mm | 喷丸速度Shot peening speed/(m/s) | 喷丸覆盖率Shot peening coverage/% | 表面残余应力Surface residual stress/MPa | 粗糙度Roughness/μm |
|---|
| 1 | 0 | 1 | -1 | -955.06 | 40.75 |
| 2 | 1 | -1 | 0 | -849.636 | 31.24 |
| 3 | 1 | 1 | 0 | -1 052.92 | 51.31 |
| 4 | 0 | 0 | 0 | -992.71 | 30.46 |
| 5 | 1 | 0 | 1 | -938.14 | 46.29 |
| 6 | - 1 | - 1 | 0 | -824.68 | 13.59 |
| 7 | 0 | 0 | 0 | -996.84 | 30.46 |
| 8 | - 1 | 0 | 1 | -1 161.33 | 20.47 |
| 9 | 0 | 0 | 0 | -992.02 | 30.46 |
1 0 | 0 | - 1 | - 1 | -744.18 | 22.57 |
| 11 | 0 | -1 | 1 | -744.18 | 22.57 |
| 12 | 0 | 0 | 0 | -991.98 | 30.46 |
| 13 | - 1 | 1 | 0 | -1 157.82 | 30.99 |
| 14 | 0 | 0 | 0 | -993.65 | 30.46 |
| 15 | 0 | 1 | 1 | -1 155.60 | 46.41 |
| 16 | - 1 | 0 | - 1 | -820.27 | 14.07 |
| 17 | 1 | 0 | -1 | -918.79 | 45.89 |
), ArticleFig(id=1240627623244657222, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=CN, label=表5, caption=
试验参数和仿真结果
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| 序号Serial number | 设计参数 Design parameter | 响应值 Response value |
|---|
| 丸粒直径Particle diameter/mm | 喷丸速度Shot peening speed/(m/s) | 喷丸覆盖率Shot peening coverage/% | 表面残余应力Surface residual stress/MPa | 粗糙度Roughness/μm |
|---|
| 1 | 0 | 1 | -1 | -955.06 | 40.75 |
| 2 | 1 | -1 | 0 | -849.636 | 31.24 |
| 3 | 1 | 1 | 0 | -1 052.92 | 51.31 |
| 4 | 0 | 0 | 0 | -992.71 | 30.46 |
| 5 | 1 | 0 | 1 | -938.14 | 46.29 |
| 6 | - 1 | - 1 | 0 | -824.68 | 13.59 |
| 7 | 0 | 0 | 0 | -996.84 | 30.46 |
| 8 | - 1 | 0 | 1 | -1 161.33 | 20.47 |
| 9 | 0 | 0 | 0 | -992.02 | 30.46 |
1 0 | 0 | - 1 | - 1 | -744.18 | 22.57 |
| 11 | 0 | -1 | 1 | -744.18 | 22.57 |
| 12 | 0 | 0 | 0 | -991.98 | 30.46 |
| 13 | - 1 | 1 | 0 | -1 157.82 | 30.99 |
| 14 | 0 | 0 | 0 | -993.65 | 30.46 |
| 15 | 0 | 1 | 1 | -1 155.60 | 46.41 |
| 16 | - 1 | 0 | - 1 | -820.27 | 14.07 |
| 17 | 1 | 0 | -1 | -918.79 | 45.89 |
), ArticleFig(id=1240627623311766087, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=EN, label=Tab.6, caption=
Variance analysis of the quadratic model of the response surface for residual compressive stress on the surface
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数据来源 Data source | 方差 Variance | 自由度 Degree of freedom | 均方 Mean square | F值 Value of F | P值 Value of P |
|---|
| 模型 Model | 2.010×105 | 9 | 22 329.44 | 388.36 | <0.000 1 |
| D | 0.73 | 1 | 0.73 | 0.013 | 0.913 2 |
| v | 21 253.25 | 1 | 21 253.25 | 369.64 | <0.000 1 |
| C | 1.385×105 | 1 | 1.385×105 | 2 408.77 | <0.000 1 |
D v | 2 198.65 | 1 | 2 198.65 | 38.24 | 0.000 5 |
| DC | 3 592.85 | 1 | 3 592.85 | 62.49 | <0.000 1 |
| vC | 3 207.18 | 1 | 3 207.18 | 55.78 | 0.000 1 |
| D2 | 2 183.74 | 1 | 2 183.74 | 37.98 | 0.000 5 |
| v2 | 243.36 | 1 | 243.36 | 4.23 | 0.078 7 |
| C2 | 17 934.52 | 1 | 17 934.52 | 311.92 | <0.000 1 |
| R2=0.998 0; Adjusted R2=0.995 4; Pred R2=0.968 3;Adeq Precision=67.226 |
), ArticleFig(id=1240627623387263560, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=CN, label=表6, caption=
表面残余压应力响应面二次模型的方差分析
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数据来源 Data source | 方差 Variance | 自由度 Degree of freedom | 均方 Mean square | F值 Value of F | P值 Value of P |
|---|
| 模型 Model | 2.010×105 | 9 | 22 329.44 | 388.36 | <0.000 1 |
| D | 0.73 | 1 | 0.73 | 0.013 | 0.913 2 |
| v | 21 253.25 | 1 | 21 253.25 | 369.64 | <0.000 1 |
| C | 1.385×105 | 1 | 1.385×105 | 2 408.77 | <0.000 1 |
D v | 2 198.65 | 1 | 2 198.65 | 38.24 | 0.000 5 |
| DC | 3 592.85 | 1 | 3 592.85 | 62.49 | <0.000 1 |
| vC | 3 207.18 | 1 | 3 207.18 | 55.78 | 0.000 1 |
| D2 | 2 183.74 | 1 | 2 183.74 | 37.98 | 0.000 5 |
| v2 | 243.36 | 1 | 243.36 | 4.23 | 0.078 7 |
| C2 | 17 934.52 | 1 | 17 934.52 | 311.92 | <0.000 1 |
| R2=0.998 0; Adjusted R2=0.995 4; Pred R2=0.968 3;Adeq Precision=67.226 |
), ArticleFig(id=1240627623450178121, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=EN, label=Tab.7, caption=
Variance analysis for the quadratic model of the roughness response surface
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数据来源 Data source | 方差 Variance | 自由度 Degree of freedom | 均方 Mean square | F值 Value of F | P值 Value of P |
|---|
| 模型Model | 1 812.77 | 9 | 201.42 | 71.00 | <0.000 1 |
| D | 776.34 | 1 | 776.34 | 273.65 | <0.000 1 |
| v | 526.55 | 1 | 526.55 | 185.60 | <0.000 1 |
| C | 191.52 | 1 | 191.52 | 67.51 | <0.000 1 |
D v | 3.32 | 1 | 3.32 | 1.17 | 0.315 2 |
| DC | 123.82 | 1 | 123.82 | 43.64 | 0.000 3 |
| vC | 20.35 | 1 | 20.35 | 7.17 | 0.031 6 |
| D2 | 12.52 | 1 | 12.52 | 4.41 | 0.073 8 |
| v2 | 5.04 | 1 | 5.04 | 1.78 | 0.224 4 |
| C2 | 113.27 | 1 | 113.27 | 39.92 | 0.000 4 |
| R2=0.989 2;Adjusted R2=0.975 2; Pred R2=0.827 4;Adeq Precision=27.934 |
), ArticleFig(id=1240627623513092682, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=CN, label=表7, caption=
粗糙度响应面二次模型的方差分析
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数据来源 Data source | 方差 Variance | 自由度 Degree of freedom | 均方 Mean square | F值 Value of F | P值 Value of P |
|---|
| 模型Model | 1 812.77 | 9 | 201.42 | 71.00 | <0.000 1 |
| D | 776.34 | 1 | 776.34 | 273.65 | <0.000 1 |
| v | 526.55 | 1 | 526.55 | 185.60 | <0.000 1 |
| C | 191.52 | 1 | 191.52 | 67.51 | <0.000 1 |
D v | 3.32 | 1 | 3.32 | 1.17 | 0.315 2 |
| DC | 123.82 | 1 | 123.82 | 43.64 | 0.000 3 |
| vC | 20.35 | 1 | 20.35 | 7.17 | 0.031 6 |
| D2 | 12.52 | 1 | 12.52 | 4.41 | 0.073 8 |
| v2 | 5.04 | 1 | 5.04 | 1.78 | 0.224 4 |
| C2 | 113.27 | 1 | 113.27 | 39.92 | 0.000 4 |
| R2=0.989 2;Adjusted R2=0.975 2; Pred R2=0.827 4;Adeq Precision=27.934 |
), ArticleFig(id=1240627623596978763, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=EN, label=Tab.8, caption=
Comparison of finite element analysis results and response surface model predictive results
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样本变量 Sample variables | 表面残余应力 Surface residual stress/MPa | 粗糙度 Roughness/μm |
|---|
| D | v | C | 仿真值 Simulation value | 预测值 Predictive value | 仿真值 Simulation value | 预测值 Predictive value |
|---|
| 0 | 0 | -1 | -918.79 | -878.03 | 31.28 | 32.76 |
| 0 | - 1 | 0 | -849.64 | -854.88 | 26.71 | 25.41 |
| 1 | 0 | 0 | -990.19 | -971.73 | 46.39 | 44.17 |
| 1 | 1 | 1 | -1 162.78 | -1 118.56 | 58.64 | 56.71 |
- 1 | - 1 | - 1 | -761.61 | -748.14 | 11.24 | 10.75 |
| -1 | 1 | -1 | -957.86 | -1 003.64 | 28.87 | 29.85 |
), ArticleFig(id=1240627623659893324, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1240594158050661245, language=CN, label=表8, caption=
有限元分析结果及响应面模型预测结果对比
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样本变量 Sample variables | 表面残余应力 Surface residual stress/MPa | 粗糙度 Roughness/μm |
|---|
| D | v | C | 仿真值 Simulation value | 预测值 Predictive value | 仿真值 Simulation value | 预测值 Predictive value |
|---|
| 0 | 0 | -1 | -918.79 | -878.03 | 31.28 | 32.76 |
| 0 | - 1 | 0 | -849.64 | -854.88 | 26.71 | 25.41 |
| 1 | 0 | 0 | -990.19 | -971.73 | 46.39 | 44.17 |
| 1 | 1 | 1 | -1 162.78 | -1 118.56 | 58.64 | 56.71 |
- 1 | - 1 | - 1 | -761.61 | -748.14 | 11.24 | 10.75 |
| -1 | 1 | -1 | -957.86 | -1 003.64 | 28.87 | 29.85 |
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