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Zhihua ZHANG,Huichen YU,Chengli DONG
《机械工程前沿(英文)》 2015年 第10卷 第4期 页码 418-423 doi: 10.1007/s11465-015-0362-x
Low cycle fatigue tests were conducted on the single crystal nickel-based superalloy, DD6, with different crystallographic orientations (i.e., [001], [011], and [111]) and strain dwell types (i.e., tensile, compressive, and balanced types) at a certain high temperature. Given the material anisotropy and mean stress, both orientation factor and stress range were introduced to the Smith, Watson, and Topper (SWT) stress model to predict the fatigue life. Experimental results indicated that the fatigue properties of DD6 depend on both crystallographic orientation and loading types. The fatigue life of the tensile, compressive, and balanced strain dwell tests are shorter than those of continuous cycling tests without strain dwell because of the important creep effect. The predicted results of the proposed modified SWT stress method agree well with the experimental data.
关键词: life prediction single crystal superalloy low cycle fatigue (LCF) crystallographic orientation strain dwell
Evaluation method of multiaxial low cycle fatigue life for cubic single crystal material
CHEN Jiping, DING Zhiping
《机械工程前沿(英文)》 2007年 第2卷 第3期 页码 278-282 doi: 10.1007/s11465-007-0048-0
关键词: orthotropic regression analysis crystal material multiaxial prediction
Pengfei ZHANG, Samuel T. ARIARATNAM
《工程管理前沿(英文)》 2021年 第8卷 第1期 页码 88-97 doi: 10.1007/s42524-020-0063-y
关键词: low impact development traditional drainage system hydraulic benefits life-cycle cost
Fatigue of asphalt binder, mastic and mixture at low temperature
Dong WANG, Linbing WANG, Guoqing ZHOU
《结构与土木工程前沿(英文)》 2012年 第6卷 第2期 页码 166-175 doi: 10.1007/s11709-012-0157-7
关键词: fatigue asphalt mixture asphalt binder mastic finite element method (FEM) X-ray tomography
Hyunju Jeong, Osvaldo A. Broesicke, Bob Drew, Duo Li, John C. Crittenden
《环境科学与工程前沿(英文)》 2016年 第10卷 第6期 doi: 10.1007/s11783-016-0851-0
关键词: Life cycle assessment (LCA) Low impact development (LID) Bioretention area Rainwater harvesting Xeriscaping
刘自权,谭小东,杨小龙,许云波,吴迪,王国栋
《中国工程科学》 2014年 第16卷 第1期 页码 54-58
对比研究了现场不同工艺所得碳锰系车轮用钢及低碳低硅含磷铬系相变诱发塑性(TRIP)钢的力学性能、微观组织、疲劳性能和疲劳断口。结果显示,较传统碳锰系车轮用钢,新型TRIP 钢具有相当的屈服强度,抗拉强度明显提高了100~150 MPa,疲劳极限提高了50~140 MPa。疲劳极限随抗拉强度的提高有增大趋势。铁素体、贝氏体、残余奥氏体组织较铁素体、贝氏体、珠光体组织和铁素体、珠光体、马奥岛组织具有更好的疲劳性能。
STRATEGIES FOR A LOW-CARBON FOOD SYSTEM IN CHINA
《农业科学与工程前沿(英文)》 2023年 第10卷 第2期 页码 167-182 doi: 10.15302/J-FASE-2023494
● A provincial stage-specific greenhouse gas (GHG) accounting model for the Chinese food system was developed.
关键词: greenhouse gas emissions food system life cycle assessment environmental input-output analysis mitigation strategies
A two-stage deep freezing chemisorption cycle driven by low-temperature heat source
Yuanyang HU, Liwei WANG, Lu XU, Ruzhu WANG, Jeremiah KIPLAGAT, Jian WANG
《能源前沿(英文)》 2011年 第5卷 第3期 页码 263-269 doi: 10.1007/s11708-011-0152-z
张晓艳,王永军,李骏,付磊
《中国工程科学》 2018年 第20卷 第1期 页码 23-29 doi: 10.15302/J-SSCAE-2018.01.004
中国已经签署《巴黎协定》并做出CO2减排承诺,中国汽车工业应该为实现中国低碳化作贡献。本文从中国汽车低碳化系统构架、生命周期碳排放现状和2030年中国汽车销量预测三个角度出发,构建了汽车CO2排放预测模型,分析了中国汽车碳排放构成,进行了至2030年汽车碳排放总量预测,预测结果显示,中国汽车碳排放总量在2025—2030年达到峰值。本研究建立了汽车低碳化评价体系,并提出了中国汽车低碳化技术路线的建议。
A dimensional analysis on asphalt binder fracture and fatigue cracking
Qian ZHAO, Zhoujing YE
《结构与土木工程前沿(英文)》 2018年 第12卷 第2期 页码 201-206 doi: 10.1007/s11709-017-0402-1
Hierarchical approach for fatigue cracking performance evaluation in asphalt pavements
Ibrahim ONIFADE, Yared DINEGDAE, Björn BIRGISSON
《结构与土木工程前沿(英文)》 2017年 第11卷 第3期 页码 257-269 doi: 10.1007/s11709-017-0410-1
关键词: fatigue cracking energy based crack initiation mechanistic approach pavement analysis
Assessment of fatigue life of remanufactured impeller based on FEA
Lei XU,Huajun CAO,Hailong LIU,Yubo ZHANG
《机械工程前沿(英文)》 2016年 第11卷 第3期 页码 219-226 doi: 10.1007/s11465-016-0394-x
Predicting the fatigue life of remanufactured centrifugal compressor impellers is a critical problem. In this paper, the S-N curve data were obtained by combining experimentation and theory deduction. The load spectrum was compiled by the rain-flow counting method based on the comprehensive consideration of the centrifugal force, residual stress, and aerodynamic loads in the repair region. A fatigue life simulation model was built, and fatigue life was analyzed based on the fatigue cumulative damage rule. Although incapable of providing a high-precision prediction, the simulation results were useful for the analysis of fatigue life impact factors and fatigue fracture areas. Results showed that the load amplitude greatly affected fatigue life, the impeller was protected from running at over-speed, and the predicted fatigue life was satisfied within the next service cycle safely at the rated speed.
关键词: remanufactured impeller fatigue life impeller failures finite element analysis (FEA)
詹俞,李国芬,王宏畅
《中国工程科学》 2013年 第15卷 第8期 页码 75-78
结合南京长江第四大桥钢桥面铺装实体工程,开展铺装层混合料20 ℃疲劳性能试验。为了使试验结果能够更真实地反映主桥铺装的实际情况,直接采用主桥铺装使用的混合料成型试件,其中,带钢板复合梁试件为施工现场摊铺、碾压成型。室内试验对铺装结构单层采用劈裂疲劳试验,选择0.2、0.3、0.4、0.5、0.6这5个等级的应力水平,对组合结构采用带钢板复合梁疲劳试验,荷载水平为6 kN、7 kN、8 kN,并通过回归分析得到疲劳方程。
Contact fatigue life prediction of a bevel gear under spectrum loading
Pan JIA, Huaiju LIU, Caichao ZHU, Wei WU, Guocheng LU
《机械工程前沿(英文)》 2020年 第15卷 第1期 页码 123-132 doi: 10.1007/s11465-019-0556-8
关键词: bevel gear rolling contact fatigue (RCF) multiaxial fatigue criterion load spectrum damage accumulation rule
Enhancing fatigue life of cylinder-crown integrated structure by optimizing dimension
Weiwei ZHANG,Xiaosong WANG,Zhongren WANG,Shijian YUAN
《机械工程前沿(英文)》 2015年 第10卷 第1期 页码 102-110 doi: 10.1007/s11465-015-0329-y
Cylinder-crown integrated hydraulic press (CCIHP) is a new press structure. The hemispherical hydraulic cylinder also functions as a main portion of crown, which has lower weight and higher section modulus compared with the conventional hydraulic cylinder and press crown. As a result, the material strength capacity is better utilized. During the engineering design of cylinder-crown integrated structure, in order to increase the fatigue life, structural optimization on the basis of the adaptive macro genetic algorithms (AMGA) is first conducted to both reduce weight and decrease peak stress. It is shown that the magnitude of the maximum principal stress is decreased by 28.6%, and simultaneously the total weight is reduced by 4.4%. Subsequently, strain-controlled fatigue test is carried out, and the stress-strain hysteresis loops and cyclic hardening curve are obtained. Based on linear fit, the fatigue properties are calculated and used for the fatigue life prediction. It is shown that the predicted fatigue life is significantly increased from 157000 to 1070000 cycles after structural optimization. Finally, according to the optimization design, a 6300 kN CCIHP has been manufactured, and priority application has been also suggested.
关键词: cylinder-crown integrated hydraulic press (CCIHP) adaptive macro genetic algorithms (AMGA) strain-controlled fatigue test
标题 作者 时间 类型 操作
LCF behavior and life prediction method of a single crystal nickel-based superalloy at high temperature
Zhihua ZHANG,Huichen YU,Chengli DONG
期刊论文
Evaluation method of multiaxial low cycle fatigue life for cubic single crystal material
CHEN Jiping, DING Zhiping
期刊论文
Life cycle cost savings analysis on traditional drainage systems from low impact development strategies
Pengfei ZHANG, Samuel T. ARIARATNAM
期刊论文
Fatigue of asphalt binder, mastic and mixture at low temperature
Dong WANG, Linbing WANG, Guoqing ZHOU
期刊论文
Life cycle assessment of low impact development technologies combined with conventional centralized water
Hyunju Jeong, Osvaldo A. Broesicke, Bob Drew, Duo Li, John C. Crittenden
期刊论文
A two-stage deep freezing chemisorption cycle driven by low-temperature heat source
Yuanyang HU, Liwei WANG, Lu XU, Ruzhu WANG, Jeremiah KIPLAGAT, Jian WANG
期刊论文
Hierarchical approach for fatigue cracking performance evaluation in asphalt pavements
Ibrahim ONIFADE, Yared DINEGDAE, Björn BIRGISSON
期刊论文
Assessment of fatigue life of remanufactured impeller based on FEA
Lei XU,Huajun CAO,Hailong LIU,Yubo ZHANG
期刊论文
Contact fatigue life prediction of a bevel gear under spectrum loading
Pan JIA, Huaiju LIU, Caichao ZHU, Wei WU, Guocheng LU
期刊论文