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Numerical modeling of nonlinear deformation of polymer composites based on hyperelastic constitutive
Qingsheng YANG, Fang XU
《机械工程前沿(英文)》 2009年 第4卷 第3期 页码 284-288 doi: 10.1007/s11465-009-0067-0
关键词: composites hyperelastic finite deformation homogenization micromechanics
Hypoplastic constitutive modeling of wetting deformation of weathered rockfill materials
Erich BAUER, Zhongzhi FU, Sihong LIU,
《结构与土木工程前沿(英文)》 2010年 第4卷 第1期 页码 78-91 doi: 10.1007/s11709-010-0011-8
关键词: rockfill dams weathered granular materials hypoplasticity solid hardness creep stress relaxation
Mehdi VEISKARAMI, Ali GHORBANI, Mohammadreza ALAVIPOUR
《结构与土木工程前沿(英文)》 2012年 第6卷 第4期 页码 365-378 doi: 10.1007/s11709-012-0178-2
关键词: constitutive model granular material rockfill plasticity disturbed state concept stress level
Precision glass molding: Toward an optimal fabrication of optical lenses
Liangchi ZHANG,Weidong LIU
《机械工程前沿(英文)》 2017年 第12卷 第1期 页码 3-17 doi: 10.1007/s11465-017-0408-3
It is costly and time consuming to use machining processes, such as grinding, polishing and lapping, to produce optical glass lenses with complex features. Precision glass molding (PGM) has thus been developed to realize an efficient manufacture of such optical components in a single step. However, PGM faces various technical challenges. For example, a PGM process must be carried out within the super-cooled region of optical glass above its glass transition temperature, in which the material has an unstable non-equilibrium structure. Within a narrow window of allowable temperature variation, the glass viscosity can change from 105 to 1012 Pa·s due to the kinetic fragility of the super-cooled liquid. This makes a PGM process sensitive to its molding temperature. In addition, because of the structural relaxation in this temperature window, the atomic structure that governs the material properties is strongly dependent on time and thermal history. Such complexity often leads to residual stresses and shape distortion in a lens molded, causing unexpected changes in density and refractive index. This review will discuss some of the central issues in PGM processes and provide a method based on a manufacturing chain consideration from mold material selection, property and deformation characterization of optical glass to process optimization. The realization of such optimization is a necessary step for the Industry 4.0 of PGM.
关键词: precision glass molding optical lens constitutive modeling optimization manufacturing chain Industry 4.0
Damage-constitutive model for seawater coral concrete using different stirrup confinements subjected
《结构与土木工程前沿(英文)》 2023年 第17卷 第3期 页码 429-447 doi: 10.1007/s11709-022-0913-2
关键词: coral aggregate concrete stress−strain curves lateral effective stress peak stress axial−lateral curves damage-constitutive model.
Endochronic damage constitutive model for fully-graded aggregate mass concrete
SONG Yupu, WANG Huailiang
《结构与土木工程前沿(英文)》 2007年 第1卷 第3期 页码 274-280 doi: 10.1007/s11709-007-0035-x
Unified description of sand behavior
Feng ZHANG, Bin YE, Guanlin YE
《结构与土木工程前沿(英文)》 2011年 第5卷 第2期 页码 121-150 doi: 10.1007/s11709-011-0104-z
关键词: constitutive model sand stress-induced anisotropy density structure
张宝,丁淳彤,刘宝华,陈雪莲
《中国工程科学》 2003年 第5卷 第3期 页码 44-50
利用飞轮式Hopkinson拉杆实验技术对钨质量分数为93% 的钨合金在-50~100℃温度范围、应变率ε=102~103s-1区间的动态拉伸性态进行了测试,提供了相应的σ-ε曲线和最大拉伸失效应变,并以此为依据建立了该合金动态拉伸行为的本构关系,提出了该合金受动载发生塑性失稳以致发生拉断的判据。利用断口分形分析理论,对试件拉伸断口微观特征所作的分析和对宏观力学性态实验所作的结论给予了有力的支持。
Confining pressure effect on dynamic response of high rockfill dam
Xuexing CAO, Yunlong HE, Kun XIONG,
《结构与土木工程前沿(英文)》 2010年 第4卷 第1期 页码 116-126 doi: 10.1007/s11709-010-0014-5
关键词: confining pressure effect high rockfill dam dynamic response Hardin-Drnevich constitutive model
邹翀,雷胜友,岳喜军,宋妍,高攀
《中国工程科学》 2011年 第13卷 第1期 页码 74-80
针对富水全、强风化砂岩的特点,进行了该砂岩的基本物理力学性质、化学成分实验,然后通过单轴、三轴压缩实验研究了爆破扰动、含水量、试样层理对砂岩应力-应变强度特性的影响。发现砂岩遇水软化,粘聚力大幅度降低,表现出显著的各向异性;爆破扰动后,岩石试样的单轴抗压强度减低,弹模减小,泊松比增大;由于砂岩具有明显的节理性,按两种方向加载所得到的岩石试样强度明显不同;根据实验所得应力-应变曲线特点,发现用修正的Duncan-Zhang模型可以很好地描述砂岩的前应力-应变曲线。
《结构与土木工程前沿(英文)》 2021年 第15卷 第4期 页码 1025-1037 doi: 10.1007/s11709-021-0741-9
关键词: cemented paste backfill fiber reinforcement constitutive behavior temperature tailings
Several basic problems in plastic theory of geomaterials
Yuanxue LIU, Jiawu ZHOU, Zhongyou LI, Chen CHEN, Yingren ZHENG
《结构与土木工程前沿(英文)》 2009年 第3卷 第1期 页码 81-84 doi: 10.1007/s11709-009-0016-3
关键词: constitutive relation geomaterials classial plastic theory Drucker Postulate yield surface flow rule
Multiscale computation on feedforward neural network and recurrent neural network
Bin LI, Xiaoying ZHUANG
《结构与土木工程前沿(英文)》 2020年 第14卷 第6期 页码 1285-1298 doi: 10.1007/s11709-020-0691-7
关键词: multiscale method constitutive model feedforward neural network recurrent neural network
Cyclic behavior of prefabricated reinforced concrete frame with infill slit shear walls
Kui XIAO,Qilin ZHANG,Bin JIA
《结构与土木工程前沿(英文)》 2016年 第10卷 第1期 页码 63-71 doi: 10.1007/s11709-015-0294-x
关键词: slit shear wall constitutive model cyclic seismic damage
标题 作者 时间 类型 操作
Numerical modeling of nonlinear deformation of polymer composites based on hyperelastic constitutive
Qingsheng YANG, Fang XU
期刊论文
Hypoplastic constitutive modeling of wetting deformation of weathered rockfill materials
Erich BAUER, Zhongzhi FU, Sihong LIU,
期刊论文
Development of a constitutive model for rockfills and similar granular materials based on the disturbed
Mehdi VEISKARAMI, Ali GHORBANI, Mohammadreza ALAVIPOUR
期刊论文
Precision glass molding: Toward an optimal fabrication of optical lenses
Liangchi ZHANG,Weidong LIU
期刊论文
Damage-constitutive model for seawater coral concrete using different stirrup confinements subjected
期刊论文
Endochronic damage constitutive model for fully-graded aggregate mass concrete
SONG Yupu, WANG Huailiang
期刊论文
Confining pressure effect on dynamic response of high rockfill dam
Xuexing CAO, Yunlong HE, Kun XIONG,
期刊论文
Time- and temperature-dependence of compressive and tensile behaviors of polypropylene fiber-reinforced cemented paste backfill
期刊论文
Several basic problems in plastic theory of geomaterials
Yuanxue LIU, Jiawu ZHOU, Zhongyou LI, Chen CHEN, Yingren ZHENG
期刊论文
Multiscale computation on feedforward neural network and recurrent neural network
Bin LI, Xiaoying ZHUANG
期刊论文