Finite element modeling of hybrid fiber ECC targets subjected to impact and blast
Finite element modeling of hybrid fiber ECC targets subjected to impact and blast
... study The objective of this research is to study the behaviors of hybrid- fiber ECC targets subjected to impact and blast loading and to evaluate the potential of hybrid- fiber ECC as protective ... FINITE ELEMENT MODELING OF HYBRID- FIBER ECC TARGETS SUBJECTED TO IMPACT AND BLAST LEE SIEW CHIN (B Eng (Hons), UTM) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF ... targets subjected to blast loading 1.3 Finite Element (FE) modeling of impact and blast loading on cementbased targets Theoretical studies on structures subjected to impact and blast loading involve...
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Patient specific finite element modeling of the human lumbar motion segment
... 5.2 The effect of Poisson’s ratio of the disc nucleus on the axial stiffness of the lumbar motion segment 60 Fig 5.3 The effect of Young’s Modulus of the disc nucleus on the axial stiffness of the ... forms of spinal pathologies Patient- specificity of a finite element model of the lumbar spine in both geometry and material property proves crucial to the study of the pathogenesis of lumbar ... Spondylolisthesis, Lordosis and Osteoarthritis also occur at the lumbar region of the spine Determining the mechanical behavior of the lumbar motion segment is crucial to the study of pathogenesis of...
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Báo cáo khoa học: "Gas exchange and water relations of 3 sizes of containerized Picea mariana seedlings subjected to atmospheric and edaphic water stress under controlled conditions" pps
... Planters’ Notes 34 , 33 -39 Macdonald SE, Lieffers VJ (1990) Photosynthesis, water relations, and foliar nitrogen of Picea mariana and Larix laricina from drained and undrained peatlands Can J For ... respect to water flux, and the resulting negative effects seedling water relations and photosynthesis, we undertook a controlled environment study using containerized black spruce (Picea mariana ... objectives were ) to determine if on increased canopy size led to an increase in the susceptibility of the seedlings to water stress; and 2) to determine the relative importance of soil and atmospheric...
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finite element analysis of pulsed
... are first conducted to verify the finite element analysis of melting and solidification Results of finite element analysis are compared with exact solutions of solidification and melting problems given ... for the elements involved in phase change are computed by the method of element removal and reactivation and the use of a new initial temperature at T s to calculate the stress/strain of the solidified ... 2.3 The Method of Element Removal and Reactivation In order to model the phenomena of melting and solidification, the element removal and reactivation method, ͓15͔, is applied An element will be...
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finite element analysis of structural steelwork beam to column bolted connections 2001
... apportioned to material strain hardening and the remaining 20% to dispersal into the beam web Test E3 failed at a connection moment of 290 kNm due to thread stripping of both the bolts and nuts local to ... 1.34 Column flange bending E5 147 kN 253 kN 1.72 Column flange bending Table - Full Scale Test Results Finite Element Model MYSTRO and LUSAS FEA software was used for the finite element analysis ... thick shell elements comprising either or nodes each with degrees of freedom and are used to model the beam and column webs, beam closing plate, column back flange and stiffeners JNT4 elements are...
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Báo cáo nghiên cứu khoa học: "FINITE ELEMENT ANALYSIS OF ELASTO-PLASTIC BOUNDARY FOR SOME STRUCTURE PROBLEMS" pot
... (mm) Fig Uniform load – displacement curves for meshes M1, M2, M3 and Owen’s FE Table Distribution of plastic layers of some sections at elements with various uniform load of mesh M2 Uniform load ... no account of transverse shear deformation The governing equation: [Kf + Ks]ϕ - f = (8) where, the submatrices of Kf and Ks and subvectors of f for element e Element stiffness matrix by using ... curves for meshes M2, M4 and M5 Table2 Comparison of displacement at mid-point of the beam with formulation of shear stiffness matrix [Ks] computed with 1-Gauss point and 2-Gauss point rule of mesh...
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finite element analysis of fracture in concrete structures state of the art
... incorporate the model into the finite element analysis is by employing interface elements The first interface element was formulated by FINITE ELEMENT ANALYSIS OF FRACTURE IN CONCRETE STRUCTURES ... CHAPTER 1—INTRODUCTION In this report, the state -of- the- art in finite element modeling of concrete is viewed from a fracture mechanics perspective Although finite element methods for modeling fracture ... on the structure size However, this last point does not alter the general meaning of the term “size effect.” In contrast, in the field of fracture of metals, the FINITE ELEMENT ANALYSIS OF FRACTURE...
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Development of a realistic finite element model of human head and its applications to head injuries
... facial bones and cranial bones as well as intracranial injuries are evaluated based on the tolerance limits of the biomechanical parameters General trend of maximum intracranial biomechanical parameters ... thanks to all of my colleagues and my best friends Arpan Gupta, Guo Shifeng, Zhu Jianhua, Zhuang Han, Liu Yilin, Kyrin Liong, Saeid Arabnejad Khanooki, Shahrokh Sepehri Rahnama, Ahmadali Tahmasebimoradi, ... wave propagation paths in the facial skeleton and the intracranial brain presented to study the association of the traumatic brain injury (TBI) with the facial trauma sequences Fractures of facial...
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An integrated finite element analysis of CFRP laminates from low velocity impact to CAI strength prediction
... performed to study the damage pattern on CFRP laminates arising from low- velocity impact, and to predict the CAI strength of impact damaged composites The impact event and CAI test are two separate topics, ... important measure of damage tolerance of composite materials Extensive experimental research has been performed on the topic of low- velocity impact of CFRP laminates and its consequent CAI strength ... 171 Chapter INTEGRATED FE ANALYSIS FROM LOW- VELOCITY IMPACT TO CAI STRENGTH PREDICTION 173 6.1 Description of integrated FE analysis 175 6.2 Results and discussions ...
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Three dimensional finite element analysis of earth pressure balance tunnelling
... viability of applying three- dimensional finite element analyses to the prediction of ground movement arising from earth pressure balance tunnelling It seeks to address two of the issues involved in three- dimensional ... z-direction of the Cartesian-ordinates Z excav excavation step sizes 2-D two -dimensional 3-D three- dimensional EPB earth pressure balance EPCG element- by -element PCG EQMR element- by -element quasi-minimal ... analyses but not in the two -dimensional analyses Key Words: Krylov subspace, iterative, ill-conditioning, three- dimensional finite element analysis, Earth Pressure Balance tunnelling, ground loss...
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Finite element study of 2d equivalence to 3d analysis of a discrete soil nail problem with applications to serviceability design
... Āplate, nail (m2) Aplate, Anail (m2) Ān Cross sectional area of 2D idealized plate and 3D nail Contact surface area of 2D idealized plate and 3D nail with soil Cross sectional area factor Af ... encountered by soil nailing (c) Combination of Internal and External Failure 1.1.3 Advantages and Disadvantages of Soil Nailing as a Geotechnical Application The main advantages of soil nailing are its ... Disadvantages of Soil Nailing as a Geotechnical Application 1.1.4 Development of Soil Nail Applications with Time 1.2 Use of FE Analysis as a Design and Analysis Tool in Soil Nailing...
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Finite element study of oil tank foundation system
... pile raft is also a possible type of oil tank foundation system 2.2 Tank foundation review 2.2.1 Stability A tank stability study of 40 tanks, which included foundation shear failures and ruptures, ... analyses to study the effect of pile cap area, thickness of overlying granular material, number of piles, and stiffness of bed layer of a pile foundation system supporting an oil tank over soft clay ... FINITE ELEMENT STUDY ON OIL TANK FOUNDATION SYSTEM BUI THI YEN (M.Eng) A THESIS SUBMITTED FOR THE DEGREE OF MASTER OF ENGINEERING DEPARTMENT OF CIVIL ENGINEERING NATIONAL UNIVERSITY OF SINGAPORE...
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Finite element study of tunnel soil pile interaction
... the completion of this thesis would not have been possible i FINITE ELEMENT STUDY OF TUNNEL- SOIL- PILE INTERACTION Cheng Ch’ng Yih National University of Singapore ABSTRACT This study was initiated ... analysis of tunnel- soil- pile interaction study can be performed 1.2 Objectives and Scope of Study Due to the inherent nature of the problem where a pile is cast/driven long before a tunnel is ... 73 Summary of soil and pile properties 73 List of factors varied and kept constant .78 Summary of properties assigned to soil, pile and soil- pile interface .98 Summary of properties...
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Tài liệu Báo cáo khoa học: "Lexicalized Stochastic Modeling of Constraint-Based Grammars using Log-Linear Measures and EM Training" ppt
... experiments: The problem of chaotic convergence behaviour of EM estimation can be solved for log-linear models EM does help constraint-based grammars, e.g using about 10 times more sentences and about 100 ... presented a new approach to stochastic modeling of constraint-based grammars Our experimental results show that EM training can in fact be very helpful for accurate stochastic modeling in natural language ... precision and 57.9% e ectiveness, for a random baseline of around 17% As shown in Fig 3, the improvement in performance due to both lexicalization and EM training is smaller for the easier task of frame...
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Từ khóa: a multicoupled finite element analysis of resistance spot welding processfinite element modeling and analysis in cimmodeling of protein ligand complex based on multiple templates and user specified restraintsby the end of lesson ss will be able to use and practice some connectives phrasal verbs and make suggestionsnonlinear finite element model for the determination of elastic and thermal properties of nanocompositesmaterial modeling and device finite element simulationsmodeling of ring resonatorsfinite element fem and boundary element models bemconcept of hybrid moleculesintroduction to finite element methodstochastic modeling of languagehidden markov tree modeling of complex wavelet transformsnumber of hybrid vehicles on the roadmodeling of fixed bed catalytic reactorsmathematical modeling of catalytic fixed bed reactorsNghiên cứu sự biến đổi một số cytokin ở bệnh nhân xơ cứng bì hệ thốngchuyên đề điện xoay chiều theo dạngMột số giải pháp nâng cao chất lượng streaming thích ứng video trên nền giao thức HTTPNghiên cứu vật liệu biến hóa (metamaterials) hấp thụ sóng điện tử ở vùng tần số THzNGHIÊN CỨU CÔNG NGHỆ KẾT NỐI VÔ TUYẾN CỰ LY XA, CÔNG SUẤT THẤP LPWAN SLIDETrả hồ sơ điều tra bổ sung đối với các tội xâm phạm sở hữu có tính chất chiếm đoạt theo pháp luật Tố tụng hình sự Việt Nam từ thực tiễn thành phố Hồ Chí Minh (Luận văn thạc sĩ)Nghiên cứu về mô hình thống kê học sâu và ứng dụng trong nhận dạng chữ viết tay hạn chếNghiên cứu tổng hợp các oxit hỗn hợp kích thƣớc nanomet ce 0 75 zr0 25o2 , ce 0 5 zr0 5o2 và khảo sát hoạt tính quang xúc tác của chúngĐịnh tội danh từ thực tiễn huyện Cần Giuộc, tỉnh Long An (Luận văn thạc sĩ)Thiết kế và chế tạo mô hình biến tần (inverter) cho máy điều hòa không khíTổ chức và hoạt động của Phòng Tư pháp từ thực tiễn tỉnh Phú Thọ (Luận văn thạc sĩ)BT Tieng anh 6 UNIT 2Giáo án Sinh học 11 bài 15: Tiêu hóa ở động vậtNguyên tắc phân hóa trách nhiệm hình sự đối với người dưới 18 tuổi phạm tội trong pháp luật hình sự Việt Nam (Luận văn thạc sĩ)Giáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vậtGiáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vậtTrách nhiệm của người sử dụng lao động đối với lao động nữ theo pháp luật lao động Việt Nam từ thực tiễn các khu công nghiệp tại thành phố Hồ Chí Minh (Luận văn thạc sĩ)BÀI HOÀN CHỈNH TỔNG QUAN VỀ MẠNG XÃ HỘITÁI CHẾ NHỰA VÀ QUẢN LÝ CHẤT THẢI Ở HOA KỲQUẢN LÝ VÀ TÁI CHẾ NHỰA Ở HOA KỲ