Journal of Harbin Institute of Technology (New Series)最新文献_第3页

Lateral pressure of RC silos with static and dynamic granular materials 静态和动态颗粒料RC筒仓侧压力

Journal of Harbin Institute of Technology (New Series) Pub Date : 2015-01-01 DOI: 10.11916/J.ISSN.1005-9113.2015.04.013

Kunpeng Guo, Changdong Zhou, Xiaoyang Zhang, L. Meng

{"title":"Lateral pressure of RC silos with static and dynamic granular materials","authors":"Kunpeng Guo, Changdong Zhou, Xiaoyang Zhang, L. Meng","doi":"10.11916/J.ISSN.1005-9113.2015.04.013","DOIUrl":"https://doi.org/10.11916/J.ISSN.1005-9113.2015.04.013","url":null,"abstract":"This paper aims at analyzing material-induced lateral pressure of RC cylinder silo in both static and dynamic condition using the finite element method( FEM). In the finite element software ABAQUS,concrete material is modeled by concrete damaged plasticity model,and stored materials in silo is modeled by the hypoplastic theory.In terms of numerical model,shell elements( S4R) and solid elements( C3D8) are applied for model silo wall and stored materials respectively. The interaction between silo wall and stored materials is simulated by Coulomb friction model and penalty contact constrain provided by ABAQUS.The numerical results are verified with the existing experimental data that are designed to ensure the validation of such numerical model using FEM and it obtains good agreements between numerical results and experimental data. Then the material parameters are analyzed in both static and dynamic condition.According to the analysis,it is clear that critical friction angle,initial void ratio and minimum void ratio have an obvious effect on static lateral pressure while all the material parameters affect dynamic lateral pressure at different levels. In addition,differences of silo wall between elastic and plastic state are analyzed in dynamic condition. The numerical results show that it contributes to increasing dynamic pressure when silo wall enters into the plastic state. Finally,this paper discusses the time-history lateral pressure at different heights along silo wall,and analytical results indicate that larger acceleration values play main roles in producing the maximum lateral pressure at higher part of the silo wall.","PeriodicalId":39923,"journal":{"name":"Journal of Harbin Institute of Technology (New Series)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75769928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

On the Range of the Common Cycle Time in a Road Network 路网公共循环时间范围的研究

Journal of Harbin Institute of Technology (New Series) Pub Date : 2015-01-01 DOI: 10.11916/j.issn.1005-9113.2015.06.000]

Ting Lu, Marko Woelki, P. Wagner

引用次数: 0

The Destructive Cult, the Cause of Formation, Nature and Countermeasures 破坏性邪教、形成原因、性质与对策

Journal of Harbin Institute of Technology (New Series) Pub Date : 2015-01-01 DOI: 10.17265/2328-2177/2015.05.006

Tian, Xiang, Ma

引用次数: 0

Stable Transition of Quadruped Rhythmic Motion Using the Tracking Differentiator 利用跟踪微分器实现四足动物节奏运动的稳定过渡

Journal of Harbin Institute of Technology (New Series) Pub Date : 2015-01-01 DOI: 10.11916/J.ISSN.1005-9113.2015.05.002

Xiaoqi Li, Wei Wang, J. Yi

{"title":"Stable Transition of Quadruped Rhythmic Motion Using the Tracking Differentiator","authors":"Xiaoqi Li, Wei Wang, J. Yi","doi":"10.11916/J.ISSN.1005-9113.2015.05.002","DOIUrl":"https://doi.org/10.11916/J.ISSN.1005-9113.2015.05.002","url":null,"abstract":"Since the quadruped robot possesses predominant environmental adaptability, it is expected to be employed in nature environments. In some situations, such as ice surface and tight space, the quadruped robot is required to lower the height of center of gravity (COG) to enhance the stability and maneuverability. To properly handle these situations, a quadruped controller based on the central pattern generator (CPG) model, the discrete tracking differentiator (TD) and proportional-derivative (PD) sub-controllers is presented. The CPG is used to generate basic rhythmic motion for the quadruped robot. The discrete TD is not only creatively employed to implement the transition between two different rhythmic medium values of the CPG which results in the adjustment of the height of COG of the quadruped robot, but also modified to control the transition duration which enables the quadruped robot to achieve the stable transition. Additionally, two specific PD sub-controllers are constructed to adjust the oscillation amplitude of the CPG, so as to avoid the severe deviation in the transverse direction during transition locomotion. Finally, the controller is validated on a quadruped model. A tunnel with variable height is built for the quadruped model to travel through. The simulation demonstrates the severe deviation without the PD sub-controllers, and the reduced deviation with the PD sub-controllers.","PeriodicalId":39923,"journal":{"name":"Journal of Harbin Institute of Technology (New Series)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88258042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Analysis of the Deep-Seated Concrete Slab for Settlement Control at Bridge Approach Embankment 桥梁引线路堤深埋混凝土板沉降控制分析

Journal of Harbin Institute of Technology (New Series) Pub Date : 2010-01-01 DOI: 10.1007/978-3-642-04460-1_124

Yun Sun, Y. Xiang, D. Guo, Ting Zhang

引用次数: 1

An investigation and reconstruction of traditional vertical-Axle-styled 'Chinese great windmill' and its square-pallet chain-pump 传统立轴式“中国大风车”及其方托盘链泵的研究与改造

Journal of Harbin Institute of Technology (New Series) Pub Date : 2009-01-01 DOI: 10.1007/978-1-4020-9485-9_21

Lie Sun, Baichun Zhang, T. Lin, Zhizhong Zhang

引用次数: 7

Dramatic Vision of August Wilson 奥古斯特·威尔逊的戏剧远景

Journal of Harbin Institute of Technology (New Series) Pub Date : 2008-01-01 DOI: 10.5860/choice.33-4983a

Zhang Jin

引用次数: 14

On Features of the Russian Law 论俄罗斯法律的特点

Journal of Harbin Institute of Technology (New Series) Pub Date : 2006-01-01 DOI: 10.4324/9781315589688-5

W. Xiao

引用次数: 0

On national economic security 论国家经济安全

Journal of Harbin Institute of Technology (New Series) Pub Date : 2002-01-01 DOI: 10.2307/2602467

Z. Zhibo

引用次数: 0

Genetic Algorithms for On-Line System Identification 在线系统辨识的遗传算法

Journal of Harbin Institute of Technology (New Series) Pub Date : 1993-01-01 DOI: 10.1007/978-3-7091-7533-0_63

K. Warwick, Y. Kang

引用次数: 7