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高铁与城铁混合底架结构的制造新工艺与工装设计研究 认领
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作者 王亚男 《现代制造工程》 CSCD 北大核心 2020年第2期94-98,共5页
研究了由高铁底架结构与城铁底架结构混合而成的轨道车辆车体底架的制造新工艺,该工艺方法有别于以往车辆在底架组成之前将牵引梁与枕梁进行预先合成的组焊方法,而是采用将枕梁单件、牵引梁单件和边梁拼焊成一个底架框架的方法进行组焊... 研究了由高铁底架结构与城铁底架结构混合而成的轨道车辆车体底架的制造新工艺,该工艺方法有别于以往车辆在底架组成之前将牵引梁与枕梁进行预先合成的组焊方法,而是采用将枕梁单件、牵引梁单件和边梁拼焊成一个底架框架的方法进行组焊。经试验确定,当工艺流程为分别预先组焊地板单件、牵引梁单件和枕梁单件,然后将边梁、牵引梁单件和枕梁单件拼焊成底架框架,最后将预先组焊的地板单件落入底架框架内,最终完成焊接时,得到的焊后变形量最小。变形趋势为宽度方向上两边梁向反面弯曲,长度方向上两端部向正面弯曲。通过设计专用的工装夹具,可使焊后变形量减小;通过焊前预制反变形,可使焊后变形量进一步减小。当焊前预制反变形量达到10 mm时,最大焊后变形量为3 mm。 展开更多
关键词 底架 工艺流程 变形 反变形
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考虑前缘桩锚支挡作用的滑坡变形预警指标研究 认领
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作者 姬超 陈好 +1 位作者 陈皓 龙伦刚 《水利水电技术》 北大核心 2020年第5期139-145,共7页
在考虑坡体前缘抗滑桩锚索对坡体下滑的阻挡作用的基础上,提出滑坡变形总量与变形速率预警指标。以四川岷江电化有限公司厂区西侧滑坡为例,利用强度折减法,通过FLAC数值模拟得到滑坡失稳破坏时的坡向位移,之后减去锚索所能承受的最大变... 在考虑坡体前缘抗滑桩锚索对坡体下滑的阻挡作用的基础上,提出滑坡变形总量与变形速率预警指标。以四川岷江电化有限公司厂区西侧滑坡为例,利用强度折减法,通过FLAC数值模拟得到滑坡失稳破坏时的坡向位移,之后减去锚索所能承受的最大变形量,拟定滑坡坡表变形总量预警阈值,并且根据前人统计研究得到的一般性滑坡变形速率与滑坡实际监测资料分析,拟定滑坡坡表变形速率预警阈值。计算结果表明:监测点JC01坡表变形总量蓝色、黄色、橙色与红色预警阈值分别为0.00 cm、38.84 cm、58.26 cm、77.68 cm;监测点JC02坡表变形总量蓝色、黄色、橙色与红色预警阈值分别为0.00 cm、63.00 cm、94.51 cm、126.01 cm;监测点JC03坡表变形总量蓝色、黄色、橙色与红色预警阈值分别为0.00 cm、46.84 cm、70.26 cm、93.68 cm;滑坡的坡表变形速率蓝色、黄色、橙色与红色预警阈值分别为0.00 mm/d、0.11 mm/d、1.61 mm/d、10.00 mm/d。研究结果为四川岷江电化有限公司厂区西侧滑坡预警阈值的拟定提供了相关参考与依据。 展开更多
关键词 滑坡 位移 变形速率 预警
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Ultra-fine-Grained Ferrite Prepared from Dynamic Reversal Austenite During Warm Deformation 认领
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作者 Hong-Bin Li Ming-Song Chen +2 位作者 Ya-Qiang Tian Lian-Sheng Chen Li-Qing Chen 《金属学报:英文版》 SCIE EI CAS CSCD 2020年第2期290-298,共9页
The ultra-fine-grained ferrite(UFGF) with the size of less than 1 μm is often difficult to be obtained for low-alloyed steel in practical production processing.In this study,considering the rod and wire production pr... The ultra-fine-grained ferrite(UFGF) with the size of less than 1 μm is often difficult to be obtained for low-alloyed steel in practical production processing.In this study,considering the rod and wire production process,a new method for preparing the UFGF with submicron scale is proposed by warm deformation of six passes with total strain of 2.6,followed by the cooling process in Gleeble-3500 thermo-mechanical simulator.The results show that the UFGF with an average size of 0.64 μm could be obtained via the phase transformation from austenite grains with an average size of 3.4 μm,which are achieved by the deformation-induced reversal austenization during the high strain rate warm deformation.The main driving force for the reversal transformation is the stress.And the interval between the passes also plays an important role in the reversal austenization. 展开更多
关键词 Ultra-fine-grained FERRITE DYNAMIC REVERSAL transformation(DRT) Warm DEFORMATION Deformation-induced REVERSAL TRANSFORMATION Cooling process
基于变形控制的薄壁板状压铸件加工精度保证 认领
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作者 黄志伟 李珊(岭南师范学院机电工程学院) 《特种铸造及有色合金》 CAS 北大核心 2020年第3期294-296,共3页
以中间板为例,介绍了薄壁板状压铸件机加工时的主要难点,以及如何在开发时对加工方案进行分析,找出保证加工精度的控制要点,以提高过程开发的品质。在试生产时,通过数据分析,发现数控加工中心的热变形导致机加工孔位工程能力不足,通过... 以中间板为例,介绍了薄壁板状压铸件机加工时的主要难点,以及如何在开发时对加工方案进行分析,找出保证加工精度的控制要点,以提高过程开发的品质。在试生产时,通过数据分析,发现数控加工中心的热变形导致机加工孔位工程能力不足,通过采取误差补偿的方式解决了该问题,杜绝了位置度超差不良品的产生。 展开更多
关键词 薄壁板状零件 变形 机床热变形 误差补偿
Swelling characteristics of andesite foundation induced by water immersion and their influence on ballastless track subgrade 认领
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作者 DUAN Jun-yi YANG Guo +2 位作者 HU Min LEI Xiao-qin LIN Yu-liang 《山地科学学报:英文版》 SCIE CSCD 2020年第4期1001-1012,共12页
To study the mechanical and deformation characteristics of ballastless track subgrade filled with micro-expansion fillers in a water-immersed environment, a physical model of ballastless track subgrade was constructed... To study the mechanical and deformation characteristics of ballastless track subgrade filled with micro-expansion fillers in a water-immersed environment, a physical model of ballastless track subgrade was constructed on a 1:2 scale with expansive andesite fillers. A water immersion test was carried out to model the soaking of the expansive soil foundation caused by rising groundwater. The swelling behaviors of the foundation and their influences upon the mechanics and deformations of the subgrade were analyzed. The lateral swelling pressure of the foundation and the heave of the subgrade obviously increased due to the water immersion, and the values were closely related to the overlying load and lateral restraint. The heave deformation of the double-line ballastless track subgrade showed significant nonuniformity along the lateral direction, causing the track slab to incline with a maximum inclination angle of 1.55×10^-3 deg. The heave of the foundation caused a heave in subgrade, but this transferred heave was significantly attenuated. The attenuation rate of the heave at the midline of the track slab was up to 13.38%. The attenuation characteristic can be fully utilized for the anti-heave deformation measures of railway subgrade in expansive soil areas. 展开更多
关键词 High-speed railway Expansive andesite Heave deformation Lateral swelling pressure Inclination angle Deformation attenuation
Tensile ductility and deformation mechanisms of a nanotwinned 316L austenitic stainless steel 认领
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作者 Y.Z.Zhang J.J.Wang N.R.Tao 《材料科学技术:英文版》 SCIE EI CAS CSCD 2020年第1期65-69,共5页
A nanotwinned 316 L austenitic stainless steel was prepared by means of surface mechanical grinding treatment.After recovery annealing,the density of dislocations decreases obviously while the average twin/matrix lame... A nanotwinned 316 L austenitic stainless steel was prepared by means of surface mechanical grinding treatment.After recovery annealing,the density of dislocations decreases obviously while the average twin/matrix lamella thickness still keeps in the nanometer scale.The annealed nanotwinned sample exhibits a high tensile yield strength of 771 MPa and a considerate uniform elongation of 8%.TEM observations showed that accommodating more dislocations and secondary twinning inside the nanotwins contribute to the enhanced ductility and work hardening rate of the annealed nanotwinned sample. 展开更多
关键词 Nanotwinned STAINLESS STEEL DUCTILITY DEFORMATION MECHANISM
工业锅炉检验中遇到的问题及分析 认领
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作者 曲先民 于涛 《中小企业管理与科技》 2020年第1期147-148,共2页
在工业锅炉的日常运行过程中,为了使运行安全得到充分的保障、运行效率得到有效的提高,需要定期检验锅炉的运行状况。基于此,论文首先阐述了工业锅炉的概念,之后分析了工业锅炉检验中经常遇到的问题,主要包括四个方面:腐蚀问题、结垢问... 在工业锅炉的日常运行过程中,为了使运行安全得到充分的保障、运行效率得到有效的提高,需要定期检验锅炉的运行状况。基于此,论文首先阐述了工业锅炉的概念,之后分析了工业锅炉检验中经常遇到的问题,主要包括四个方面:腐蚀问题、结垢问题、变形问题、裂纹问题,最后针对以上出现的问题给出了详细的解决方案,希望能够为以后相关方面的研究工作提供一些参考。 展开更多
关键词 工业锅炉检验 腐蚀 结垢 变形 裂纹
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Effect of reduction in area per pass on strain distribution and microstructure during caliber rolling in twinning-induced plasticity steel 认领
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作者 Joong-ki Hwang Sung Jin Kim 《钢铁研究学报:英文版》 SCIE EI CAS CSCD 2020年第1期62-74,共13页
The effects of reduction in area(RA)per pass during caliber rolling on microstructure and strain distribution of twinninginduced plasticity steel have been investigated to find solutions to make a more homogeneous mat... The effects of reduction in area(RA)per pass during caliber rolling on microstructure and strain distribution of twinninginduced plasticity steel have been investigated to find solutions to make a more homogeneous material along the radial direction for wire rod applications.The steel wires subjected to an average RA per pass of 2.5%(skin pass caliber rolling)and 10.0%(conventional caliber rolling)were analyzed.The skin pass caliber-rolled wire was characterized as a duplex fiber texture of major<111>and minor<100>.and the textures were almost same at/between center and surface area,which is totally different from those of conventional caliber rolling and wire drawing.The skin pass caliber rolling led to more homogeneous microstructure and mechanical properties along the radial direction in comparison with the conventional caliber rolling and wire drawing due to the more homogeneous Hall-Petch hardening,dislocation hardening,and texture behavior with area,resulting in higher formability. 展开更多
关键词 Twinning-induced plasticity steel Caliber rolling Deformation twin Reduction in area Skin pass
Fracture morphology and crack mechanism in pure polycrystalline magnesium under tension-compression fatigue testing 认领
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作者 Li Tan Xi-Yan Zhang +2 位作者 Ting Xia Guang-Jie Huang Qing Liu 《稀有金属:英文版》 SCIE EI CAS CSCD 2020年第2期162-168,共7页
The fatigue fracture was characterized and the fracture behavior was analyzed,using scanning electron microscope(SEM)and electron back-scattered diffraction(EBSD),the fatigue tests of two strain amplitude at room temp... The fatigue fracture was characterized and the fracture behavior was analyzed,using scanning electron microscope(SEM)and electron back-scattered diffraction(EBSD),the fatigue tests of two strain amplitude at room temperature were 0.5%and 1.0%respectively,and the results showed that the fatigue deformation of different strain amplitude produced two typical fatigue fracture morphology,and when the strain amplitude was 1.0%,fatigue fracture mechanism of AZ31 magnesium alloy induced by{1012}twins,when the strain amplitude is 0.5%,it was induced by{1012}-{1012}double twins.In the present study,the average thickness of primary twin is~20μm at amplitude of 0.5%and~80μm at amplitude of 1.%.The thickness of{1012}primary twins was large enough to activate{1012}-{1012}secondary twins at a high strain amplitude,while the thickness of{1012}primary twins was too narrow to activate{1012}-{1012}secondary twins at a low strain amplitude. 展开更多
关键词 Deformation TWINNING MAGNESIUM FRACTURE FATIGUE
Ultraviolet 3D digital image correlation applied for deformation measurement in thermal testing with infrared quartz lamps 认领
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作者 Yali DONG Jiaqing ZHAO Bing PAN 《中国航空学报:英文版》 SCIE EI CAS CSCD 2020年第3期1085-1092,共8页
In thermal-structural testing of hypersonic materials and structures,deformation measurement on the front surface of an object directly heated by quartz lamps is highly necessary and very challenging.This work describ... In thermal-structural testing of hypersonic materials and structures,deformation measurement on the front surface of an object directly heated by quartz lamps is highly necessary and very challenging.This work describes a novel front-surface high-temperature deformation measurement technique,which adopts ultraviolet 3D digital image correlation(UV 3D-DIC)to observe and measure the high-temperature deformation fields on front surfaces directly heated by quartz lamps.Compared with existing blue light DIC techniques,the established UV 3D-DIC,which combines UV CCD camera,active UV illumination and bandpass filter imaging,can effectively suppress the strong disturbing light emitted by the quartz lamps and the heated sample itself during heating process.Two experiments were carried out to verify the robustness and accuracy of the developed technique:(1)direct observation of front surfaces of a hypersonic thermal structure sample heated from room temperature to 1050℃,and(2)front-surface thermal stain and coefficient of thermal expansion(CTE)measurement of an Inconel 718 sample up to 800℃.The well matched strain and CTE results with literature data show that UV 3D-DIC system is an effective technique for front-surface deformation measurement and has great potential in characterizing deformation response of hypersonic materials and structures subjected to transient aerodynamic heating. 展开更多
关键词 DEFORMATION DIC Front-surface Quartz lamp heating Ultraviolet 3D digital image correlation
LM-CDBN超高层变形预测模型的构建与应用 认领
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作者 邱冬炜 王彤 +2 位作者 段明旭 罗德安 王来阳 《西南交通大学学报》 EI CSCD 北大核心 2020年第2期310-316,共7页
为提高超高层建筑变形预测精度,对附有条件的深度信念网络(conditional deep belief network,CDBN)模型中权值及阈值调整方法进行了改进,使用LM (Levenberg-Marquardt)算法作为新的模型定权机制,构建了LMCDBN网络模型;将构建的LM-CDBN... 为提高超高层建筑变形预测精度,对附有条件的深度信念网络(conditional deep belief network,CDBN)模型中权值及阈值调整方法进行了改进,使用LM (Levenberg-Marquardt)算法作为新的模型定权机制,构建了LMCDBN网络模型;将构建的LM-CDBN超高层变形预测模型应用于一座298 m超高层建筑中;然后用训练误差、预测值拟合度、预测结果稳定性组成的综合评价体系对模型进行了评价;最后,将LM-CDBN模型分别与深度信念模型(deep belief network,DBN)、极限学习机(extreme learning machine,ELM)、基于无迹卡尔曼滤波的支持回归向量机(unscented Kalman filter-support vector regression,UKF-SVR)进行了预测结果对比.结果表明:在超高层建筑的变形预测中,相比DBN、ELM和UKF-SVR,LM-CDBN预测精度分别提升了32%、55%及24%,模型的信息提取稳定性及处理时变系统非线性问题的泛化能力得到了提高. 展开更多
关键词 深度信念网络 变形 预测 数据处理 参数估计
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中老铁路炭质软岩隧道施工关键技术 认领
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作者 梁镜宇 《高速铁路技术》 2020年第1期90-94,共5页
炭质板岩具有遇水易软化的特性,当隧道通过此类地层时,隧区围岩自稳能力差,开挖后易出现变形坍塌,需采用特殊施工工艺,并辅助合理的防护措施,以有效控制隧道围岩变形。本文结合中老铁路会福莱隧道正洞施工实践,对炭质软岩地层隧道的施... 炭质板岩具有遇水易软化的特性,当隧道通过此类地层时,隧区围岩自稳能力差,开挖后易出现变形坍塌,需采用特殊施工工艺,并辅助合理的防护措施,以有效控制隧道围岩变形。本文结合中老铁路会福莱隧道正洞施工实践,对炭质软岩地层隧道的施工关键技术、变形防治及质量安全控制措施等进行了研究总结,可供国内同类地层隧道工程施工参考借鉴。 展开更多
关键词 中老铁路 炭质软岩 隧道施工 关键技术 变形
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发动机排气歧管隔热罩的数值分析 认领
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作者 蓝苑尤 梁志达 《汽车零部件》 2020年第4期71-73,共3页
在发动机零部件设计开发前期,使用ABAQUS软件对隔热罩件进行模态和热应力分析,预测隔热罩频率、振型和热应力分布及其变形情况,其设计状态满足发动机NVH和耐热性能要求,为隔热罩设计提供参考。
关键词 隔热罩 模态分析 热应力 变形
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多层点阵夹心结构承压性能研究 认领
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作者 王莉娜 赵月帅 +3 位作者 尹钊 郝平 孙伟 郭军辉 《载人航天》 CSCD 北大核心 2020年第1期41-47,共7页
针对多层点阵夹心结构的轻质化要求同其承压能力之间的问题,构建了多层点阵夹心结构的有限元模型,研究了层数、金字塔芯子单胞分布密度、薄板厚度、流体压力及不同材料种类对多层点阵夹心结构承压性能的影响。结果表明,较大的层数、芯... 针对多层点阵夹心结构的轻质化要求同其承压能力之间的问题,构建了多层点阵夹心结构的有限元模型,研究了层数、金字塔芯子单胞分布密度、薄板厚度、流体压力及不同材料种类对多层点阵夹心结构承压性能的影响。结果表明,较大的层数、芯子单胞分布密度及薄板厚度均会有效提升多层点阵夹心结构的承压能力,但会增大该结构的质量;较大的流体压力会对多层点阵夹心结构中薄板及芯子单胞的组成提出较高的要求;弹性模量较大的材料所制备的多层点阵夹心结构的承载能力也较高。 展开更多
关键词 多层点阵夹心结构 承压能力 变形量 金字塔芯子
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洛阳地铁暗挖隧道变形监测与分析 认领
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作者 许帅 《山西建筑》 2020年第5期162-164,共3页
对拱顶沉降、净空收敛及地表沉降等测项的监测数据进行分析,得出了暗挖隧道自身结构及周边环境随施工进度的变化趋势,为今后暗挖隧道施工监测提供了一些参考依据。
关键词 暗挖隧道 变形 监测
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双线隧道盾构机侧穿时古石塔地基及塔身变形规律研究 认领
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作者 孟娟 颜庭成 +1 位作者 陈晓飞 高新南 《河南科学》 2020年第4期626-631,共6页
随着城市轨道交通的快速发展,盾构隧道穿越古建筑等情况越来越多.以杭州市某盾构双线隧道侧穿古石塔为例,采用FLAC3D数值模拟软件建立三维模型,对盾构穿越过程中对石塔地基变形及塔身变形进行了研究.通过分析得知:盾构推进至石塔正侧方... 随着城市轨道交通的快速发展,盾构隧道穿越古建筑等情况越来越多.以杭州市某盾构双线隧道侧穿古石塔为例,采用FLAC3D数值模拟软件建立三维模型,对盾构穿越过程中对石塔地基变形及塔身变形进行了研究.通过分析得知:盾构推进至石塔正侧方时,地表最大沉降点位于隧道与石塔之间,偏向石塔一侧;全过程中地表最大沉降值出现在离石塔最近处隧道盾尾远离石塔后;石塔倾斜主要表现为垂直隧道掘进轴线方向. 展开更多
关键词 盾构隧道 古石塔 数值模拟 变形
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Multi-temporal InSAR for Urban Deformation Monitoring:Progress and Challenges 认领
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作者 WU Songbo LE Yongyao +1 位作者 ZHANG Lei DING Xiaoli 《雷达学报》 CSCD 北大核心 2020年第2期277-294,共18页
Multi-temporal Interferometric Synthetic Aperture Radar(MT-InSAR) is one of the most powerful Earth observation techniques, especially useful for measuring highly detailed ground deformation over large ground areas. M... Multi-temporal Interferometric Synthetic Aperture Radar(MT-InSAR) is one of the most powerful Earth observation techniques, especially useful for measuring highly detailed ground deformation over large ground areas. Much research has been carried out to apply MT-InSAR to monitor ground and infrastructure deformation in urban areas related to land reclamation, underground construction and groundwater extraction.This paper reviews the progress in the research and identifies challenges in applying the technology, including the inconsistency in coherent point identification when different approaches are used, the reliability issue in parameter estimation, difficulty in accurate geolocation of measured points, the one-dimensional line-of-sight nature of InSAR measurements, the inability of making complete measurements over an area due to geometric distortions, especially the shadowing effects, the challenges in processing large SAR datasets, the decrease of the number of coherent points with the increase of the length of SAR time series, and the difficulty in quality control of MT-InSAR results. 展开更多
关键词 Urban deformation Monitoring Multi-temporal InSAR
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Programmable deformation of patterned bimorph actuator swarm 认领
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作者 Jia-Nan Ma Yong-Lai Zhang +3 位作者 Dong-Dong Han Jiang-Wei Mao Zhao-Di Chen Hong-Bo Sun 《国家科学评论:英文版》 SCIE EI CSCD 2020年第4期775-785,共11页
Graphene-based actuators featuring fast and reversible deformation under various external stimuli are promising for soft robotics.However,these bimorph actuators are incapable of complex and programmable 3D deformatio... Graphene-based actuators featuring fast and reversible deformation under various external stimuli are promising for soft robotics.However,these bimorph actuators are incapable of complex and programmable 3D deformation,which limits their practical application.Here,inspired from the collective coupling and coordination of living cells,we fabricated a moisture-responsive graphene actuator swarm that has programmable shape-changing capability by programming the SU-8 patterns underneath.To get better control over the deformation,we fabricated SU-8 micropattern arrays with specific geometries and orientations on a continuous graphene oxide film,forming a swarm of bimorph actuators.In this way,predictable and complex deformations,including bending,twisting,coiling,asymmetric bending,3D folding,and combinations of these,have been achieved due to the collective coupling and coordination of the actuator swarm.This work proposes a new way to program the deformation of bilayer actuators,expanding the capabilities of existing bimorph actuators for applications in various smart devices. 展开更多
关键词 graphene oxide actuators moisture responsive predictable deformation soft robots
正交异性钢桥面板典型疲劳细节变形与裂纹尖端应力分析 认领
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作者 林上顺 《世界桥梁》 北大核心 2020年第1期71-76,共6页
为了解车轮荷载作用对正交异性钢桥面板典型疲劳细节的影响,以长门特大桥为背景,采用有限元法建立正交异性钢桥面板节段模型及易开裂部位的子模型,分析在不同横向荷载分布下3处典型疲劳细节受力及面内外变形,得到各细节最不利加载位置... 为了解车轮荷载作用对正交异性钢桥面板典型疲劳细节的影响,以长门特大桥为背景,采用有限元法建立正交异性钢桥面板节段模型及易开裂部位的子模型,分析在不同横向荷载分布下3处典型疲劳细节受力及面内外变形,得到各细节最不利加载位置。对最不利位置进行加载,分析疲劳裂纹尖端应力强度因子变化规律,研究不同疲劳细节裂纹类型及扩展能力。结果表明:单轮荷载作用下,横隔板弧形缺口位置会发生面内外变形,顶板-U肋焊根处以面外变形为主,横隔板间的顶板-U肋焊缝焊根位置面外变形最大。在裂纹较短时,随着长度的增加,弧形缺口裂纹从张开型裂纹逐渐转向张开型、滑开型混合裂纹,且横隔板处的顶板-U肋焊根裂纹为复合型裂纹,横隔板间的顶板-U肋焊根裂纹为张开型裂纹。横隔板弧形缺口裂纹和顶板-U肋焊缝焊根裂纹的尖端应力强度因子的最大值,分别出现在裂纹长度为20 mm和40 mm附近,该处裂纹较容易继续扩展。 展开更多
关键词 正交异性钢桥面板 疲劳 裂纹 变形 应力强度因子 有限元法
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基于数字散斑相关方法的VCM深冲钢板力学性能评价 认领
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作者 张志城 从一博 +1 位作者 郭照灿 张德海 《精密成形工程》 2020年第2期37-42,共6页
目的针对VCM深冲钢板各组分材料在变形过程中很难达到屈服和破坏的同步,材料很容易在附加应力的作用下沿薄弱方向产生失效乃至断裂的问题,研究在外加及内在因素影响下材料的变形机理和变形过程。方法采用数字散斑相关方法对VCM深冲钢板... 目的针对VCM深冲钢板各组分材料在变形过程中很难达到屈服和破坏的同步,材料很容易在附加应力的作用下沿薄弱方向产生失效乃至断裂的问题,研究在外加及内在因素影响下材料的变形机理和变形过程。方法采用数字散斑相关方法对VCM深冲钢板及其组分材料的力学性能进行研究。引入偏离系数、影响系数、梯度系数来计算VCM深冲钢板及其组分材料之间的关系,获取试样拉伸过程中三维变形的几何数据。结果得到了VCM深冲钢板及其组分材料的抗拉强度、弹性模量、上屈服强度、最大力下总伸长率和断后伸长率,其中,深冲基板影响系数达到2.582,影响最小的是最大力下总伸长率,影响系数为0.806。通过XJTUDIC系统检测并分析获得了x和y方向的位移值、应变值和最大主应变值。结论增加VCM薄膜后,VCM深冲钢板的应力应变能力有所提高,VCM薄膜最大应变值为91.632%,深冲基板最大应变值为40.068%,VCM深冲钢板的最大应变值为41.632%,其力学性能介于深冲基板和VCM薄膜力学性能之间。 展开更多
关键词 VCM深冲钢板 数字散斑相关方法 力学性能 变形
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