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Guangbo HAO,Haiyang LI,Suzen KEMALCAN,Guimin CHEN,Jingjun YU
《机械工程前沿(英文)》 2016年 第11卷 第2期 页码 129-134 doi: 10.1007/s11465-016-0392-z
In order to accurately model compliant mechanism utilizing plate flexures, qualitative planar stress (Young’s modulus) and planar strain (plate modulus) assumptions are not feasible. This paper investigates a quantitative equivalent modulus using nonlinear finite element analysis (FEA) to reflect coupled factors in affecting the modelling accuracy of two typical distributed-compliance mechanisms. It has been shown that all parameters have influences on the equivalent modulus with different degrees; that the presence of large load-stiffening effect makes the equivalent modulus significantly deviate from the planar assumptions in two ideal scenarios; and that a plate modulus assumption is more reasonable for a very large out-of-plane thickness if the beam length is large.
关键词: coupling factors modelling accuracy compliant mechanisms equivalent modulus
Empirical models and design codes in prediction of modulus of elasticity of concrete
Behnam VAKHSHOURI, Shami NEJADI
《结构与土木工程前沿(英文)》 2019年 第13卷 第1期 页码 38-48 doi: 10.1007/s11709-018-0479-1
关键词: modulus of elasticity normal strength normal weight concrete empirical models design codes compressive strength density
A modified zone model for estimating equivalent room thermal capacity
Hua CHEN, Xiaolin WANG
《能源前沿(英文)》 2013年 第7卷 第3期 页码 351-357 doi: 10.1007/s11708-013-0254-x
关键词: room model thermal network analysis transfer function heating ventilation and air conditioning (HVAC) system simulation
Elastic modulus and thermal stress in coating during heat cycling with different substrate shapes
Daniel GAONA,Alfredo VALAREZO
《机械工程前沿(英文)》 2015年 第10卷 第3期 页码 294-300 doi: 10.1007/s11465-015-0351-0
The elastic modulus of a deposit (Ed) can be obtained by monitoring the temperature (?T) and curvature (?k) of a one-side coated long plate, namely, a one-dimensional (1D) deformation model. The aim of this research is to design an experimental setup that proves whether a 1D deformation model can be scaled for complex geometries. The setup includes a laser displacement sensor mounted on a robotic arm capable of scanning a specimen surface and measuring its deformation. The reproducibility of the results is verified by comparing the present results with Stony Brook University Laboratory’s results. The ?k-?T slope error is less than 8%, and the Ed estimation error is close to 2%. These values reveal the repeatability of the experiments. Several samples fabricated with aluminum as the substrate and 100MXC nanowire (Fe and Cr alloy) as the deposit are analyzed and compared with those in finite element (FE) simulations. The linear elastic behavior of 1D (flat long plate) and 2D (squared plate) specimens during heating/cooling cycles is demonstrated by the high linearity of all ?k-?T curves (over 97%). The Ed values are approximately equal for 1D and 2D analyses, with a median of 96 GPa and standard deviation of 2 GPa. The correspondence between the experimental and simulated results for the 1D and 2D specimens reveals that deformation and thermal stress in coated specimens can be predicted regardless of specimen geometry through FE modeling and by using the experimental value of Ed. An example of a turbine-blade-shaped substrate is presented to validate the approach.
关键词: in-plane Young’s modulus curvature temperature thermal stress coating
Distribution of background equivalent static wind load on high-rise buildings
Jianguo ZHANG , Ming GU ,
《结构与土木工程前沿(英文)》 2009年 第3卷 第3期 页码 241-248 doi: 10.1007/s11709-009-0036-z
关键词: high-rise buildings along-wind cross-wind background equivalent static wind load close formulae
Mohammed FARUQI, Gobishanker RAJASKANTHAN, Breanna BAILEY, Francisco AGUINIGA
《结构与土木工程前沿(英文)》 2022年 第16卷 第12期 页码 1653-1653 doi: 10.1007/s11709-019-0578-7
关键词: concrete fiber reinforced polymer E-modulus strength temperatures
China’s new problems of food security revealed by the Food Equivalent Unit
Huilong LIN,Ruichao LI,Cangyu JIN,Chong WANG,Maohong WEI,Jizhou REN
《农业科学与工程前沿(英文)》 2014年 第1卷 第1期 页码 69-76 doi: 10.15302/J-FASE-2014023
关键词: food security nutrition security food equivalent unit grassland agriculture China
Hao WANG, Fengge ZHANG, Tao GUAN, Siyang YU
《机械工程前沿(英文)》 2017年 第12卷 第3期 页码 420-426 doi: 10.1007/s11465-017-0439-9
A brushless electrically excited synchronous generator (BEESG) with a hybrid rotor is a novel electrically excited synchronous generator. The BEESG proposed in this paper is composed of a conventional stator with two different sets of windings with different pole numbers, and a hybrid rotor with powerful coupling capacity. The pole number of the rotor is different from those of the stator windings. Thus, an analysis method different from that applied to conventional generators should be applied to the BEESG. In view of this problem, the equivalent circuit and electromagnetic torque expression of the BEESG are derived on the basis of electromagnetic relation of the proposed generator. The generator is simulated and tested experimentally using the established equivalent circuit model. The experimental and simulation data are then analyzed and compared. Results show the validity of the equivalent circuit model.
关键词: wind power brushless electrically excited synchronous generator hybrid rotor equivalent circuit
K. Sathish KUMAR, T. JAYABARATHI
《能源前沿(英文)》 2012年 第6卷 第4期 页码 394-402 doi: 10.1007/s11708-012-0211-0
关键词: support vector machines (SVM) structural risk minimization (SRM) equivalent capacity margin (ECM) restoration fault classification
《结构与土木工程前沿(英文)》 页码 812-826 doi: 10.1007/s11709-023-0940-7
关键词: falling weight deflectometer modulus of subgrade reaction elastic modulus metaheuristic algorithms
Mohammed FARUQI, Gobishanker RAJASKANTHAN, Breanna BAILEY, Francisco AGUINIGA
《结构与土木工程前沿(英文)》 2022年 第16卷 第12期 页码 1654-1654 doi: 10.1007/s11709-020-0622-7
Simulation of viscoelastic behavior of defected rock by using numerical manifold method
Feng REN, Lifeng FAN, Guowei MA
《结构与土木工程前沿(英文)》 2011年 第5卷 第2期 页码 199-207 doi: 10.1007/s11709-011-0102-1
关键词: stress wave propagation defected rock numerical manifold method viscoelastic behavior storage modulus loss modulus
Mosbeh R. KALOOP, Alaa R. GABR, Sherif M. EL-BADAWY, Ali ARISHA, Sayed SHWALLY, Jong WAN HU
《结构与土木工程前沿(英文)》 2019年 第13卷 第6期 页码 1379-1392 doi: 10.1007/s11709-019-0562-2
关键词: Least Square Support Vector Machine Artificial Neural Network resilient modulus Recycled Concrete Aggregate Recycled Clay Masonry
朱养妮,江新标,赵柱民,张良,周永茂
《中国工程科学》 2012年 第14卷 第8期 页码 56-59
采用蒙特卡罗程序MCNP模拟计算了医院中子照射器I型堆(IHNI-1)热中子束流孔道出口处的等效平面源。对B堆芯进行了临界搜索计算,模拟计算了热中子束流孔道及出口处中子、γ的束流参数,应用等效平面源模型建立了BNCT等效中子、γ平面源。为人体头颅等效模型剂量分布的快速计算提供了较为可靠的平面源。
关键词: 医院中子照射器I型堆 热中子束流孔道 等效中子平面源 等效γ平面源
标题 作者 时间 类型 操作
Understanding coupled factors that affect the modelling accuracy of typical planar compliant mechanisms
Guangbo HAO,Haiyang LI,Suzen KEMALCAN,Guimin CHEN,Jingjun YU
期刊论文
Empirical models and design codes in prediction of modulus of elasticity of concrete
Behnam VAKHSHOURI, Shami NEJADI
期刊论文
Elastic modulus and thermal stress in coating during heat cycling with different substrate shapes
Daniel GAONA,Alfredo VALAREZO
期刊论文
Distribution of background equivalent static wind load on high-rise buildings
Jianguo ZHANG , Ming GU ,
期刊论文
An improved design method to predict the E-modulus and strength of FRP composites at different temperatures
Mohammed FARUQI, Gobishanker RAJASKANTHAN, Breanna BAILEY, Francisco AGUINIGA
期刊论文
China’s new problems of food security revealed by the Food Equivalent Unit
Huilong LIN,Ruichao LI,Cangyu JIN,Chong WANG,Maohong WEI,Jizhou REN
期刊论文
Equivalent circuit and characteristic simulation of a brushless electrically excited synchronous wind
Hao WANG, Fengge ZHANG, Tao GUAN, Siyang YU
期刊论文
Fault classification and reconfiguration of distribution systems using equivalent capacity margin method
K. Sathish KUMAR, T. JAYABARATHI
期刊论文
Prediction of falling weight deflectometer parameters using hybrid model of genetic algorithm and adaptive neuro-fuzzy inference system
期刊论文
An improved design method to predict the E-modulus and strength of FRP composites at different temperatures
Mohammed FARUQI, Gobishanker RAJASKANTHAN, Breanna BAILEY, Francisco AGUINIGA
期刊论文
Simulation of viscoelastic behavior of defected rock by using numerical manifold method
Feng REN, Lifeng FAN, Guowei MA
期刊论文
Predicting resilient modulus of recycled concrete and clay masonry blends for pavement applications using
Mosbeh R. KALOOP, Alaa R. GABR, Sherif M. EL-BADAWY, Ali ARISHA, Sayed SHWALLY, Jong WAN HU
期刊论文