Measurement and simulation of cyclic deformation of oligocrystalline structures using the example of coronary stents
以冠状动脉支架为例进行寡晶结构循环变形的测量和模拟
基本信息
- 批准号:407576368
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:德国
- 项目类别:Research Grants
- 财政年份:2018
- 资助国家:德国
- 起止时间:2017-12-31 至 2021-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Most metallic micro components, for example coronary stents, consist of oligocrystalline microstructures. Therefore such components have only few crystals, to the point of only one crystal in cross section. The deformation behavior of such structures is remarkably different with respect to the one of polycrystals because anisotropy of single crystallites as well as neighboring grains have to be taken into account.Commercially available materials are generally well investigated regarding their cyclic properties. But the respective data are based on experimental data of standard test specimens with much larger dimensions than the ones of micro components.In a previous project the deformation mechanisms of oligocrystals have been investigated with respect to their static uniaxial deformation behavior. Differently oriented flat specimens as well as notched wires have been used. Based on these results a continuum mechanical model as well as a crystal plasticity analysis have been developed to predict the uniaxial static deformation behavior of micro components.The goal of the proposed project is fundamental experimental research accompanied with simulation on the deformation mechanisms of oligocrystals during cyclic deformation using the example of stent materials. The results will be transferable to various miniaturized material systems, because for all types of deformation, static as well as cyclic, size effects occur during mechanical load if the grain size reaches the magnitude of the component wall thickness.Based on the experimental know how and the previously developed simulation models experiment as well as simulation will be extended to uniaxial cyclic deformation and multiaxial static as well as cyclic (bending or bending fatigue respectively) load taking statistics due to different grain orientations into account.
大多数金属微部件,例如冠状动脉支架,由低晶微结构组成。因此,这种成分只有很少的晶体,在横截面上只有一个晶体。由于要考虑到单晶和邻近晶粒的各向异性,这种结构的变形行为与多晶结构的变形行为有很大的不同。市售材料的循环性能通常得到了很好的研究。但各自的数据都是基于标准试件的实验数据,尺寸远大于微构件的实验数据。在以前的项目中,已经研究了寡晶的变形机制,涉及它们的静态单轴变形行为。不同取向的平面试样以及缺口导线已被使用。基于这些结果,建立了连续力学模型和晶体塑性分析来预测微部件的单轴静态变形行为。本课题以支架材料为例,对低晶在循环变形过程中的变形机制进行基础实验研究和模拟。研究结果将适用于各种小型化材料系统,因为对于所有类型的变形,无论是静态变形还是循环变形,如果晶粒尺寸达到部件壁厚的大小,则在机械载荷期间会发生尺寸效应。在已有的实验知识和已建立的仿真模型的基础上,将实验和仿真扩展到考虑不同晶粒取向统计的单轴循环变形和多轴静载荷以及循环(分别为弯曲或弯曲疲劳)载荷。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
数据更新时间:{{ journalArticles.updateTime }}
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
数据更新时间:{{ journalArticles.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ monograph.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ sciAawards.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ conferencePapers.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ patent.updateTime }}
Professor Dr. Siegfried Schmauder其他文献
Professor Dr. Siegfried Schmauder的其他文献
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
{{ truncateString('Professor Dr. Siegfried Schmauder', 18)}}的其他基金
Modeling of fracture of functionally graded thermal barrier coatings under high heat fluxes
高热通量下功能梯度热障涂层断裂的建模
- 批准号:
397980451 - 财政年份:2018
- 资助金额:
-- - 项目类别:
Research Grants
Development of an experimentally supported Friction Stir Welding model for predicting the strength of dissimilar joints based on the example of aluminum-steel joints
基于铝钢接头示例,开发实验支持的搅拌摩擦焊接模型,用于预测异种接头的强度
- 批准号:
318360086 - 财政年份:2017
- 资助金额:
-- - 项目类别:
Research Grants
Phase-Specific Analysis and Simulation of Micro Deformation and Damage in Metal Matrix Composites
金属基复合材料微变形和损伤的相特异性分析与模拟
- 批准号:
298892085 - 财政年份:2016
- 资助金额:
-- - 项目类别:
Research Grants
Molecular dynamics simulations on the influence of precipitates on the strain localization in aged Al-Mg alloys
析出物对时效铝镁合金应变局部化影响的分子动力学模拟
- 批准号:
269506753 - 财政年份:2015
- 资助金额:
-- - 项目类别:
Research Grants
Analytical modeling and analysis of fracture of functionally graded coatings
功能梯度涂层断裂的分析建模和分析
- 批准号:
242255642 - 财政年份:2013
- 资助金额:
-- - 项目类别:
Research Grants
Experimental investigation and FE simulation of ductile fracture of aluminium alloy laser welded butt joints
铝合金激光焊接对接接头延性断裂的实验研究与有限元模拟
- 批准号:
234633486 - 财政年份:2013
- 资助金额:
-- - 项目类别:
Research Grants
Messung und Simulation der monotonen Verformung oligokristalliner Strukturen am Beispiel koronarer Stents
以冠状动脉支架为例的寡晶结构单调变形的测量和模拟
- 批准号:
224586284 - 财政年份:2012
- 资助金额:
-- - 项目类别:
Research Grants
Numerische Optimierung von bioinspirierten keramischen Werkstoffsystemen
仿生陶瓷材料系统的数值优化
- 批准号:
112803565 - 财政年份:2009
- 资助金额:
-- - 项目类别:
Research Grants
Charakterisierung des Degradationsverhaltens und numerischer Simulation der Versagensmechanismen
退化行为的表征和失效机制的数值模拟
- 批准号:
114503652 - 财政年份:2009
- 资助金额:
-- - 项目类别:
Research Grants
Molekulardynamische Modellierung und Validierung der Herstellung und der Struktur-Eigenschafts-Korrelationen von SiC/SiN-Nanolaminaten
SiC/SiN 纳米层压材料的制备和结构-性能相关性的分子动力学建模和验证
- 批准号:
51053141 - 财政年份:2007
- 资助金额:
-- - 项目类别:
Research Grants
相似国自然基金
Simulation and certification of the ground state of many-body systems on quantum simulators
- 批准号:
- 批准年份:2020
- 资助金额:40 万元
- 项目类别:
基于WRF-Mosaic近似不同下垫面类型改变对区域能量和水分循环影响的集合模拟
- 批准号:41775087
- 批准年份:2017
- 资助金额:68.0 万元
- 项目类别:面上项目
嵌段共聚物多级自组装的多尺度模拟
- 批准号:20974040
- 批准年份:2009
- 资助金额:33.0 万元
- 项目类别:面上项目
微扰量子色动力学方法及在强子对撞机的应用和暗物质的研究
- 批准号:10975004
- 批准年份:2009
- 资助金额:38.0 万元
- 项目类别:面上项目
孔隙介质中化学渗流溶解面非稳定性的理论分析与数值模拟实验研究
- 批准号:10872219
- 批准年份:2008
- 资助金额:35.0 万元
- 项目类别:面上项目
Kinetic Monte Carlo 模拟薄膜生长机理的研究
- 批准号:10574059
- 批准年份:2005
- 资助金额:12.0 万元
- 项目类别:面上项目
变压吸附中真空脱附过程的传质传热规律研究
- 批准号:20576028
- 批准年份:2005
- 资助金额:10.0 万元
- 项目类别:面上项目
相似海外基金
Virtual nanostructure simulation (VINAS) portal
虚拟纳米结构模拟 (VINAS) 门户
- 批准号:
10567076 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Multivalent protein-DNA nanostructures as synthetic blocking antibodies
多价蛋白质-DNA 纳米结构作为合成阻断抗体
- 批准号:
10587455 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Designing cyclic peptide with target protein selection based on mixed-solvent molecular dynamics simulation
基于混合溶剂分子动力学模拟的目标蛋白选择环肽设计
- 批准号:
23H03495 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Grant-in-Aid for Scientific Research (B)
Interplay of the HIV-1 Env cytoplasmic tail, Gag-MA, and membrane: resolving molecular detail and blocking assembly
HIV-1 Env 胞质尾部、Gag-MA 和膜的相互作用:解析分子细节并阻断组装
- 批准号:
10772333 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Blunting of the Myofilament Beta-Adrenergic Response in HCM: Structural-Dynamic Mechanisms
HCM 中肌丝 β 肾上腺素反应的钝化:结构动力学机制
- 批准号:
10748921 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Project 1: Modeling brain-state-dependent fluid flow and clearance in mice and humans
项目 1:模拟小鼠和人类大脑状态依赖性液体流动和清除
- 批准号:
10673158 - 财政年份:2022
- 资助金额:
-- - 项目类别:
Librational Mode Coupling Theory of Allosteric Signal Transmission
变构信号传输的解放模式耦合理论
- 批准号:
10360233 - 财政年份:2022
- 资助金额:
-- - 项目类别:
Project 1: Modeling brain-state-dependent fluid flow and clearance in mice and humans
项目 1:模拟小鼠和人类大脑状态依赖性液体流动和清除
- 批准号:
10516501 - 财政年份:2022
- 资助金额:
-- - 项目类别:














{{item.name}}会员




