Impact of micro-scale residual stress on in-situ tensile testing of ductile cast iron: Digital volume correlation vs. model with fully resolved microstructure vs. periodic unit cell

Andriollo Tito; Zhang Yubin; Faester Soren; Thorborg Jesper; Hattel Jesper

首页> 外文期刊>Journal of the Mechanics and Physics of Solids >Impact of micro-scale residual stress on in-situ tensile testing of ductile cast iron: Digital volume correlation vs. model with fully resolved microstructure vs. periodic unit cell

【24h】

Impact of micro-scale residual stress on in-situ tensile testing of ductile cast iron: Digital volume correlation vs. model with fully resolved microstructure vs. periodic unit cell

机译：微观残余应力对球墨铸铁原位拉伸测试的影响：微观结构完全解析的数字体积相关性与模型与周期性晶胞的关系

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相似文献
相关主题

摘要

The understanding of the mechanisms controlling deformation of ductile iron at the micro scale and their coupling to the manufacturing conditions is still far from complete. In this respect, recent synchrotron-based studies have demonstrated that the thermal contraction mismatch between the graphite particles and the matrix during solid-state cooling leads to a complex residual stress state in the microstructure. To investigate its impact on the room-temperature tensile deformation, a computational-experimental analysis extendable to other similar composite materials is presented in this paper. First, a miniaturized specimen is loaded and imaged in-situ with X-ray tomography. Then, the microscale displacement is reconstructed using digital volume correlation (DVC) and used to prescribe the boundary conditions in a finite element model of the full microstructure between two cross-sections. The model predictions at both the macroscale - tensile force and lateral contraction - and the microscale - strain field - are compared to the corresponding experimental and DVC-based data for several choices of the initial stress state, particles' mechanical behavior and strength of the particles-matrix interface. It is proved that the micro-scale residual stress and a low interface strength are the key to explain the early stages of the tensile deformation of ductile iron. Finally, it is shown that a simple unit cell model of the microstructure would lead to significantly different results, thus demonstrating the superior accuracy and robustness of the present approach. (C) 2019 Elsevier Ltd. All rights reserved.

机译：对于控制球墨铸铁在微观尺度上的变形及其与制造条件的耦合的机理的理解还远远不够。在这方面，最近的基于同步加速器的研究表明，固态冷却期间石墨颗粒与基体之间的热收缩失配会导致微观结构中出现复杂的残余应力状态。为了研究其对室温拉伸变形的影响，本文提出了可扩展至其他类似复合材料的计算实验分析。首先，装载一个小型化的样本并用X射线断层扫描在原位成像。然后，使用数字体积相关性（DVC）重建微尺度位移，并在两个横截面之间的完整微观结构的有限元模型中规定边界条件。将模型的宏观预测（拉伸力和横向收缩）以及微观尺度的应变场与相应的实验数据和基于DVC的数据进行比较，以选择初始应力状态，颗粒的力学行为和颗粒强度-matrix接口。事实证明，微观残余应力和低界面强度是解释球墨铸铁拉伸变形早期的关键。最后，表明了微结构的简单晶胞模型将导致明显不同的结果，从而证明了本方法的优越的准确性和鲁棒性。（C）2019 Elsevier Ltd.保留所有权利。

著录项

来源
《Journal of the Mechanics and Physics of Solids》 |2019年第4期|714-735|共22页
作者
Andriollo Tito; Zhang Yubin; Faester Soren; Thorborg Jesper; Hattel Jesper;
展开▼
作者单位

Tech Univ Denmark, Dept Mech Engn, DK-2800 Lyngby, Denmark;

Tech Univ Denmark, Dept Mech Engn, DK-2800 Lyngby, Denmark;

Tech Univ Denmark, Dept Wind Energy, Riso Campus Frederiksborgvej 399, DK-4000 Roskilde, Denmark;

Tech Univ Denmark, Dept Mech Engn, DK-2800 Lyngby, Denmark|MAGMA GmbH, D-52072 Aachen, Germany;

Tech Univ Denmark, Dept Mech Engn, DK-2800 Lyngby, Denmark;

展开▼
收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
In-situ test; Digital volume correlation; Cast iron; Composite; Residual stress;

机译：原位测试;数字体积相关;铸铁;复合材料;残余应力;

相似文献

外文文献

1. Analysis Of Ductile Cast Iron Tensile Tests To Relate Ductility Variation To Casting Defects And Material Microstructure [J] . Karl-Fredrik Nilsson, Vratko Vokal Materials Science and Engineering . 2009,第1a2期

机译：球墨铸铁拉伸试验的分析，以将延性变化与铸件缺陷和材料微观结构相关联
2. Residual Stresses around Individual Graphite Nodules in Ductile Iron: Impact on the Tensile Mechanical Properties [J] . Tito Andriollo, Jesper Thorborg, Niels Skat Tiedje, Materials science forum . 2018,第期

机译：球墨铸铁中单个石墨结核周围的残余应力：对拉伸机械性能的影响
3. Modeling of Microstructure and Residual stress in Cast Iron Calender Rolls [J] . A.Jacot, D.Maijer Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science . 2000,第4期

机译：铸铁压延辊的组织和残余应力建模
4. Residual Stresses around Individual Graphite Nodules in Ductile Iron: Impact on the Tensile Mechanical Properties [C] . Tito Andriollo, Jesper Thorborg, Niels Tiedje, International Symposium on the Science and Processing of Cast Iron . 2018

机译：韧性铁中单个石墨结节周围的残余应力：对拉伸力学性能的影响
5. P235Relation between myocardial deformation by three-dimensional speckle tracking analysis , control of the hypertension and functional capacity in patients with systemic hypertensionP236Obstructive sleep apnoea is often under-recognised in patients with acute myocardial infarction, but commonly contributes to left ventricular diastolic dysfunctionP237Intrinsic left ventricular dysfunction in Behcet disease in comparison with systemic disease activity: insights from speckle tracking echocardiographyP238Echocardiography changes during singleton and twin pregnancyP239Proposal of two new echocardiographic parameters for the differentiation of pre-capillary from post-capillary pulmonary hypertensionP240The coincidence of implanted device and number of electrodes with the presence of residual fibrotic tissue after transvenous leads extraction assessed in echocardiographic examP241Hemoglobin is an independent predictor of left ventricular hypertrophy in postmenopausal women but not in premenopausal womenP242Left ventricular longitudinal deformation impairment in patients with psoriasis is linked with immunologic activationP243Impaired diastolic functions and left atrial mechanical functions in patients with vitamin-D deficiencyP244Modification of cardiac and vascular function secondary to insulin resistanceP245Impaired right ventricular function is not related to serum galectin-3 concentration in patients with repaired tetralogy of fallotP246Age-adjusted indices of right ventricular (RV) longitudinal function do not adequately reflect the global RV contraction in children with repaired congenital heart defects and RV volume overloadP247Relationship between fractional flow reserve and dobutamine stress echocardiography in coronary artery diseaseP248A retrospective observational comparative study on the negative predictive value of nuclear testing vs. stress echo in pre-operative assessment for patients undergoing solid organ transplantionP249The detection of viable myocardium by dobutamine stress speckle tracking echocardiography in patients with coronary artery diseaseP250VO2 flattening during exercise in heart failure: evidence for a combined low cardiac output and inefficient O2 extractionP251 The dynamic assessment of alveolar-capillary barrier during exercise-echocardiography in heart failure patients with reduced ejection fractionP252The effect of exercise training on cardiac function during exercise stress echo in patients with type 2 diabetes and diastolic dysfunctionP253Age-related maximal exercise O2 extraction differences in a population of apparently healthy subjects at cardiovascular riskP254Difference in the changes of functional mitral regurgitation between semisupine ergometer and handgrip exerciseP255Correlation of annulus size assessed by echo 2d, 3d and multidetector computed tomography in patients undergoing transcatheter aortic valve implantationP256Mitral annulus dynamics: from normal to extensive mixomatous disease-a three-dimensional transoesophageal studyP257Left atrial appendage closure: an echo point of view of 55 casesP258Effect of catheter-based renal denervation on left ventricular function, mass and (un)twist with two-dimensional speckle tracking echocardiographyP259Associations of microRNAs gene expression in peripheral blood mononuclear cells and left ventricular global longitudinal peak strain in patients with essential hypertension [O] . I. Craciunescu, N. Ngiam, BJ. Sun, 2016

机译：心肌变形之间P235Relation通过三维斑点追踪分析，在患者全身hypertensionP236Obstructive睡眠呼吸暂停的高血压和功能的能力控制是经常根据公认在急性心肌梗死，但通常有助于左室舒张dysfunctionP237Intrinsic左心室功能紊乱中白塞氏病与全身性疾病的活性的比较：用于预毛细管的从植入装置和电极数目的毛细血管后肺hypertensionP240The巧合的分化与存在的两个新的超声心动图参数单和双pregnancyP239Proposal期间从斑点追踪echocardiographyP238Echocardiography变化的见解静脉引线后残留的纤维组织提取评估了超声心动图examP241Hemoglobin是绝经后妇女的左心室肥厚的独立预测因素，但不是在premen opausal womenP242Left心室纵向变形损害牛皮癣患者与免疫联activationP243Impaired舒张功能和左心房机械功能患者的心脏和血管功能继发于胰岛素的维生素-d deficiencyP244Modification resistanceP245Impaired右心室功能是不相关的血清半乳凝素3浓度患者右心室（RV）的纵向功能fallotP246Age调整指标的修复四部曲没有充分反映在冠状动脉diseaseP248A追溯血流储备分数和多巴酚丁胺超声心动图之间修复先天性心脏缺陷和RV容积overloadP247Relationship全球儿童RV收缩在术前评估核试验对应力回声的阴性预测值进行可行myocard的实体器官transplantionP249The检测患者的观察对比研究鎓通过多巴酚丁胺斑点跟踪超声心动图在患者的心脏衰竭锻炼期间冠状动脉diseaseP250VO2压扁：证据为一个组合的低心输出量和低效率的O2 extractionP251在心脏衰竭患者运动超声心动图中肺泡 - 毛细血管屏障的动态评估具有降低的喷射对心脏功能的运动锻炼的运动负荷超声过程中患者fractionP252The影响2型糖尿病患者和表面健康受试者的群体在心血管riskP254Difference在功能性二尖瓣返流的semisupine测力计和手柄之间的变化舒张dysfunctionP253Age相关的最大运动O2提取差异环大小的exerciseP255Correlation由回波2D评估，3d和多排的患者正在接受经导管主动脉瓣implantationP256Mitral环动力学计算机断层：从正常到广泛mixomatous疾病三dimensi Onal地区食道studyP257Left心耳闭合：视在左心室功能，质量和（UN）捻基于导管的肾去神经支配的55 casesP258Effect的在外周血单核细胞和左侧的微小RNA基因表达的二维散斑跟踪echocardiographyP259Associations回波点心室全球纵向应变峰值在原发性高血压患者

Impact of micro-scale residual stress on in-situ tensile testing of ductile cast iron: Digital volume correlation vs. model with fully resolved microstructure vs. periodic unit cell

摘要

著录项

相似文献

相关主题

期刊订阅