Failure criteria for the prediction of compound journal bearing fatigue - Extension of the methodology considering microstructural effects, Project stage II
复合轴颈轴承疲劳预测的失效标准 - 考虑微观结构效应的方法扩展,项目第二阶段
基本信息
- 批准号:233292516
- 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:2013
- 资助国家:德国
- 起止时间:2012-12-31 至 2020-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Focus of this project is the description of the fatigue behaviour of white metal alloys in plain bearing applications depending on the microstructure.In the first stage of the project, the local stress state in a compound journal bearing has been calculated by thermo-elastohydrodynamic (TEHD) and finite element (FE) simulations.The multiaxial stress state has been related to the component fatigue strength by means of failure hypotheses. The implemented failure hypotheses require fatigue strength parameters, which have been determined by experiments, for the evaluation of the investigated white metal alloys.As white metals have a heterogeneous microstructure, composed by a ductile solid solution matrix with intermetallic phases causing precipitation hardening, the microstructure has significant influence on the dynamic strength of the material. This influence of the microstructure has been detected in both material and component fatigue tests. Hence, an adequate lifetime prognosis is only possible, if the microstructure of the specimens, from which material parameters are determined to calculate the fatigue limit, is identical to the microstructure in the component to be evaluated. Therefore, the influence of the microstructure on the macroscopic strength will be examined and described in the second project stage.In the field of micromechanics the method of representative volume elements (RVE) is an established and accepted tool for linking microscopic features with macroscopic material properties. In order to calculate RVE, micrographs of white metal are converted into meshed FE models. Regarding the boundary conditions and specific material models of the phases, the RVE is exposed to the operational loads. This is done for different RVE that vary in key parameters such as phase fraction, size and distribution. By the step of homogenization the macroscopic response regarding effective material properties can be derived from material properties of the individual phases. By considering the findings of the mesoscopic simulations and homogenization studies the macroscopic FE model can be adjusted to the local effective material behavior. In this way, the stress state can be calculated as a function of the effective microstructure. Furthermore, key parameters affecting the macroscopic static and dynamic strength can be identified by comprehensive numerical case studies. This is done by correlating stress and strain concentrations in the RVE with external loads, which enables the determination of a damage criterion for composite plain bearings. The validation of the numerical results is done by experimental material and component tests. Ultimately, the results of the individual steps are used to enhance the methodology of lifetime prediction of journal bearings developed in the first project stage by considering effective material parameters as a function of the microstructure.
这个项目的重点是描述白色金属合金在滑动轴承应用中根据微观结构的疲劳行为。在项目的第一阶段,采用热弹流体力学(TEHD)和有限元(FE)模拟计算了复合滑动轴承的局部应力状态。通过失效假设,将多轴应力状态与构件疲劳强度联系起来。所实现的失效假设需要通过实验确定疲劳强度参数来评价所研究的白金属合金。由于白色金属具有非均匀组织,由具有金属间相的延展性固溶体基体组成,导致析出硬化,因此微观组织对材料的动态强度有显著影响。这种微观结构的影响已经在材料和部件的疲劳试验中被检测到。因此,只有当试样的微观结构(用来计算疲劳极限的材料参数)与待评估部件的微观结构相同时,才有可能进行充分的寿命预测。因此,微观结构对宏观强度的影响将在二期工程中进行研究和描述。在细观力学领域,代表性体积元法(RVE)是一种公认的将材料微观特征与宏观特性联系起来的方法。为了计算RVE,将白色金属显微照片转换为网格有限元模型。根据相的边界条件和具体的材料模型,RVE暴露在运行荷载下。这是针对不同的RVE进行的,这些RVE在相分数、尺寸和分布等关键参数上有所不同。通过均质化的步骤,可以由各相的材料性质推导出有效材料性质的宏观响应。考虑到细观模拟和均匀化研究的结果,宏观有限元模型可以调整到局部有效材料的行为。这样,应力状态就可以作为有效微观结构的函数来计算。通过综合数值算例分析,确定了影响宏观静、动强度的关键参数。这是通过将RVE中的应力和应变浓度与外部载荷相关联来完成的,从而可以确定复合滑动轴承的损伤标准。通过材料试验和构件试验对数值结果进行了验证。最终,各个步骤的结果用于通过考虑有效材料参数作为微观结构的函数来增强在第一项目阶段开发的滑动轴承寿命预测方法。
项目成果
期刊论文数量(2)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Multiaxial life prediction of hydrodynamic plain bearings
流体动压滑动轴承的多轴寿命预测
- DOI:10.1051/matecconf/201816516001
- 发表时间:2018
- 期刊:
- 影响因子:0
- 作者:Henrik Wünsch;Christopher Sous;Christoph Broeckmann
- 通讯作者:Christoph Broeckmann
{{
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.-Ing. Christoph Broeckmann其他文献
Professor Dr.-Ing. Christoph Broeckmann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.-Ing. Christoph Broeckmann', 18)}}的其他基金
White Etching Areas in Bearing Steel 100Cr6
轴承钢 100Cr6 中的白色蚀刻区域
- 批准号:
397802006 - 财政年份:2018
- 资助金额:
-- - 项目类别:
Research Grants
Influence of pressure on the phase transformation and the precipitation kinetics of high-alloyed steel - experiment and simulation
压力对高合金钢相变和析出动力学的影响——实验与模拟
- 批准号:
392860940 - 财政年份:2017
- 资助金额:
-- - 项目类别:
Research Grants
Micro residual stresses in hard metals
硬质金属中的微小残余应力
- 批准号:
313772342 - 财政年份:2016
- 资助金额:
-- - 项目类别:
Research Grants
Mechanism-based modelling of tempering phenomena in steels
基于机理的钢回火现象建模
- 批准号:
259019485 - 财政年份:2015
- 资助金额:
-- - 项目类别:
Research Grants
High-strength gears produced by powder metallurgical processes
采用粉末冶金工艺生产的高强度齿轮
- 批准号:
200616644 - 财政年份:2011
- 资助金额:
-- - 项目类别:
Priority Programmes
Influence of powder size distribution and powder density distribution on the final shape of PM HIP-ed components
粉末尺寸分布和粉末密度分布对粉末冶金 HIP 部件最终形状的影响
- 批准号:
202959245 - 财政年份:2011
- 资助金额:
-- - 项目类别:
Research Grants
Compact nanocrystalline soft magnets using Field-Assisted Sintering
使用场辅助烧结的致密纳米晶软磁体
- 批准号:
500498139 - 财政年份:
- 资助金额:
-- - 项目类别:
Research Grants (Transfer Project)
Experiment-based modeling of the correlation between metallurgical processing, 3D microstructure evolution and mechanical properties of pearlitic nodular cast iron
基于实验的珠光体球墨铸铁冶金加工、3D 微观结构演变和机械性能之间相关性的建模
- 批准号:
504974025 - 财政年份:
- 资助金额:
-- - 项目类别:
Research Grants
Development of a method for carbide additivation on tool steel powders via a functional polymer binder to enhance the processability, microstructural isotropy, and strength of hard ferrous alloys
开发一种通过功能聚合物粘合剂在工具钢粉末上添加碳化物的方法,以提高硬质铁合金的加工性能、微观结构各向同性和强度
- 批准号:
493892776 - 财政年份:
- 资助金额:
-- - 项目类别:
Priority Programmes
Influence of Integrated HIP Heat Treatments on the Microstructure and Mechanical Properties of a PM Tool Steel: Experiment and Simulation
综合 HIP 热处理对粉末冶金工具钢显微组织和机械性能的影响:实验与模拟
- 批准号:
532214230 - 财政年份:
- 资助金额:
-- - 项目类别:
Research Grants
相似国自然基金
不同栽培环境条件下不同基因型牡丹根部细菌种群多样性特征
- 批准号:31070617
- 批准年份:2010
- 资助金额:30.0 万元
- 项目类别:面上项目
相似海外基金
Whole genome sequence interpretation for lipids to discover new genes and mechanisms for coronary artery disease
脂质的全基因组序列解释,以发现冠状动脉疾病的新基因和机制
- 批准号:
10722515 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Analysis of the predictability of lung cancer using DNA Repair functional assays and cryopreserved blood samples of the PLCO prospective cohort
使用 DNA 修复功能测定和 PLCO 前瞻性队列冷冻保存的血液样本分析肺癌的可预测性
- 批准号:
10641094 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Analysis of ECOG-ACRIN adverse event data to optimize strategies for the longitudinal assessment of tolerability in the context of evolving cancer treatment paradigms (EVOLV)
分析 ECOG-ACRIN 不良事件数据,以优化在不断发展的癌症治疗范式 (EVOLV) 背景下纵向耐受性评估的策略
- 批准号:
10884567 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Randomized Placebo-Controlled Trial of Methylphenidate for the Treatment of Post-Traumatic Stress Disorder with Associated Neurocognitive Complaints
哌醋甲酯治疗创伤后应激障碍及相关神经认知症状的随机安慰剂对照试验
- 批准号:
10588946 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Improving Brain-Behavior Markers of Preschool Executive Function through aGroup-Based Parenting Intervention for Low-Income Families
通过针对低收入家庭的团体育儿干预改善学前执行功能的大脑行为标志
- 批准号:
10663529 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Mapping heterogeneity of brain microstructural abnormalities in psychiatric disorders with normative modelling
通过规范模型绘制精神疾病中大脑微结构异常的异质性
- 批准号:
10658680 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Learning-based 3D modeling of AMD to assess disease progression and response to treatment
基于学习的 AMD 3D 建模,用于评估疾病进展和治疗反应
- 批准号:
10592517 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Development matters: Characterizing patterns of emergent ADHD risk through a neurodevelopmental framework
发展很重要:通过神经发育框架表征 ADHD 突发风险的模式
- 批准号:
10678400 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Advancing Analysis and Interpretation of Adverse Events and PROs in Cancer Clinical Trials
推进癌症临床试验中不良事件和 PRO 的分析和解释
- 批准号:
10884827 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Deep Phenotyping of Heavy Drinking in Young Adults with Behavioral Scales, Neuropsychological Tasks, and Smartphone Sensing Technology
通过行为量表、神经心理学任务和智能手机传感技术对年轻人酗酒进行深度表型分析
- 批准号:
10585512 - 财政年份:2023
- 资助金额:
-- - 项目类别: