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E-raamat: Steel Connection Analysis [Wiley Online]

  • Formaat: 552 pages
  • Ilmumisaeg: 27-Apr-2018
  • Kirjastus: Wiley-Blackwell
  • ISBN-10: 1119303516
  • ISBN-13: 9781119303510
  • Wiley Online
  • Hind: 151,14 €*
  • * hind, mis tagab piiramatu üheaegsete kasutajate arvuga ligipääsu piiramatuks ajaks
  • Formaat: 552 pages
  • Ilmumisaeg: 27-Apr-2018
  • Kirjastus: Wiley-Blackwell
  • ISBN-10: 1119303516
  • ISBN-13: 9781119303510

First book to discuss the analysis of structural steel connections by Finite Element Analysis—which provides fast, efficient, and flexible checking of these vital structural components

The analysis of steel structures is complex—much more so than the analysis of similar concrete structures. There are no universally accepted rules for the analysis of connections in steel structures or the analysis of the stresses transferred from one connection to another. This book presents a general approach to steel connection analysis and check, which is the result of independent research that began more than fifteen years ago. It discusses the problems of connection analysis and describes a generally applicable methodology, based on Finite Element Analysis, for analyzing the connections in steel structures. That methodology has been implemented in software successfully, providing a fast, automatic, and flexible route to the design and analysis of the connections in steel structures. 

Steel Connection Analysis explains several general methods which have been researched and programmed during many years, and that can be used to tackle the problem of connection analysis in a very general way, with a limited and automated computational effort. It also covers several problems related to steel connection analysis automation.

  • Uses Finite Element Analysis to discuss the analysis of structural steel connections
  • Analysis is applicable to all connections in steel structures
  • The methodology is the basis of the commercially successful CSE connection analysis software  
  • Analysis is fast and flexible

Structural engineers, fabricators, software developing firms, university researchers, and advanced students of civil and structural engineering will all benefit from Steel Connection Analysis.

Preface xv
1 Introduction
1(26)
1.1 An Unsolved Problem
1(1)
1.2 Limits of Traditional Approaches
2(12)
1.2.1 Generality
2(1)
1.2.2 Member Stress State Oversimplification
3(1)
1.2.3 Single Constituent Internal Combined Effects Linearization
4(3)
1.2.4 Single Constituent External Combined-Effects Neglect
7(1)
1.2.5 Neglecting Eccentricities
8(1)
1.2.6 Use of Envelopes
9(2)
1.2.7 Oversimplification of Plastic Mechanisms Evaluation
11(2)
1.2.8 Evaluation of Buckling Phenomena
13(1)
1.3 Some Limits of the Codes of Practice
14(7)
1.3.1 Problem of Coded Standards
14(1)
1.3.2 T-Stub in Eurocode 3
15(2)
1.3.3 Eurocode 3 Component Model
17(3)
1.3.4 Distribution of Internal Forces
20(1)
1.3.5 Prying Forces
20(1)
1.3.6 Block Tearing
21(1)
1.4 Scope of This Book
21(2)
1.5 Automatic Modeling and Analysis of 3D Connections
23(1)
1.6 Acknowledgments
24(3)
References
24(3)
2 Jnodes
27(38)
2.1 BFEM
27(2)
2.2 From the BFEM to the Member Model
29(11)
2.2.1 Physical Model and the Analytical Model
29(2)
2.2.2 Member Detection: Connection Codes
31(3)
2.2.3 An Automatic Algorithm for Straight Prismatic Member Detection
34(2)
2.2.4 Member Data Structure
36(1)
2.2.5 Member Classification at a Node
36(1)
2.2.6 Member Mutual Alignment Coding
37(3)
2.3 Jnodes
40(2)
2.3.1 Need for the Jnode Concept
40(1)
2.3.2 Jnode Definition
41(1)
2.4 Jnode Analytics
42(7)
2.4.1 Classification of Jnodes
42(1)
2.4.2 Simple Jnodes
42(1)
2.4.3 Hierarchical Jnodes
42(1)
2.4.4 Central Jnodes
43(1)
2.4.5 Cuspidal Jnodes
43(1)
2.4.6 Tangent Jnodes
44(1)
2.4.7 Constraints
45(1)
2.4.8 Summary of Jnode Classification
46(1)
2.4.9 Setting Connection Codes: Examples
46(3)
2.5 Equal Jnodes Detection
49(7)
2.5.1 Toponode
49(1)
2.5.2 Jnode Data Structure
49(1)
2.5.3 Superimposable Member Couples
50(1)
2.5.4 Criteria to Assess Jnodes Equality
51(1)
2.5.5 Algorithm to Find Equal Jnodes
52(3)
2.5.6 Examples
55(1)
2.6 Structural Connectivity Indices
56(3)
2.7 Particular Issues
59(4)
2.7.1 Symmetries
59(1)
2.7.2 Splitting of Jnodes
60(1)
2.7.3 Mutual Interaction of Different Jnodes, Jnode Clusters
61(2)
2.7.4 Tolerances
63(1)
2.8 Jclasses
63(2)
References
64(1)
3 A Model for Connection
65(8)
3.1 Terminology
65(1)
3.2 Graphs of Connections
66(3)
3.3 Subconstituents vs Layouts
69(1)
3.4 Classification of Connections
70(3)
Reference
72(1)
4 Renodes
73(32)
4.1 From Jnode to Renode Concept
73(1)
4.2 BREP Geometrical Description of 3D Objects
73(2)
4.3 The Scene
75(8)
4.3.1 Generality
75(2)
4.3.2 Members
77(1)
4.3.3 Typical Fittings
78(1)
4.3.4 Connectors
79(4)
4.4 Dual Geometry
83(2)
4.5 Automatic Connection Detection
85(6)
4.5.1 Faces in Contact
85(1)
4.5.2 Bolt Layouts
86(3)
4.5.3 Weld Layouts
89(2)
4.6 Elementary Operations
91(2)
4.7 Renode Logic and the Chains
93(9)
4.7.1 Minimum Compliance Criteria for Renode Good Design
93(1)
4.7.2 Chains
94(2)
9.7.3 Finding Chains
96(6)
4.8 Prenodes
102(1)
4.9 After Scene Creation
103(2)
5 Pillars of Connection Analysis
105(50)
5.1 Equilibrium
105(6)
5.1.1 Generality
105(3)
5.1.2 Statics of Free Rigid Bodies
108(3)
5.2 Action Reaction Principle
111(4)
5.3 Statics of Connections
115(12)
5.3.1 Equilibrium of Members in Renodes: Proper and Dual Models
115(4)
5.3.2 Force Packets for Compound Members
119(5)
5.3.3 Primary Unknowns: Iso-, Hypo-, and Hyperconnectivity
124(3)
5.4 Static Theorem of Limit Analysis
127(3)
5.5 The Unsaid of the Engineering Simplified Methods
130(1)
5.6 Missing Pillars of Connection Analysis
130(23)
5.6.1 Buckling
131(16)
5.6.2 Fracture
147(3)
5.6.3 Slip
150(2)
5.6.4 Fatigue
152(1)
5.7 Analysis of Connections: General Path
153(2)
References
154(1)
6 Connectors: Weld Layouts
155(82)
6.1 Introduction
155(1)
6.2 Considerations of Stiffness Matrix of Connectors
156(4)
6.3 Introduction to Weld Layouts
160(2)
6.4 Reference Systems and Stresses for Welds
162(3)
6.5 Geometrical Limitations
165(2)
6.5.1 Penetration Weld Layouts
165(1)
6.5.2 Fillet Weld Layouts
166(1)
6.6 Penetration-Weld Layouts (Groove Welds)
167(29)
6.6.1 Generality
167(1)
6.6.2 Simple Methods to Evaluate the Stresses
168(2)
6.6.3 Weld Layout Cross-Section Data
170(2)
6.6.4 A Stiffness Matrix
172(13)
6.6.5 Special Models
185(3)
6.6.6 Example
188(8)
6.7 Fillet-Welds Weld Layouts
196(18)
6.7.1 The Behavior of Fillet Welds
196(11)
6.7.2 Numerical Tests of Fillet Welds in the Linear Range
207(5)
6.7.3 The Stiffness Matrix of a Single Fillet Weld
212(2)
6.7 A Instantaneous Center of Rotation Method in 3D
214(21)
6.7.5 Computing the Stresses in Fillet Welds from the Forces Applied to the Layout
231(2)
6.7.6 Fillet Welds Using Contact and Friction
233(2)
6.8 Mixed Penetration and Fillet Weld Layouts
235(2)
References
235(2)
7 Connectors: Bolt Layouts and Contact
237(82)
7.1 Introduction to Bolt Layouts
237(1)
7.2 Bolt Sizes and Classes
238(2)
7.3 Reference System and Stresses for Bolt Layouts
240(3)
7.4 Geometrical Limitations
243(1)
7.4.1 Eurocode 3
244(1)
7.4.2 AISC 360-10
244(1)
7.5 Not Preloaded Bolt Layouts (Bearing Bolt Layouts)
244(22)
7.5.1 Shear and Torque
244(5)
7.5.2 Axial Force and Bending
249(17)
7.6 Preloaded Bolt Layouts (Slip Resistant Bolt Layouts)
266(11)
7.6.1 Preloading Effects
266(8)
7.6.2 Shear and Torque
274(1)
7.6.3 Axial Force and Bending
275(2)
7.7 Anchors
277(5)
7.8 Stiffness Matrix of Bolt Layouts and of Single Bolts
282(14)
7.8.1 Generality
282(1)
7.8.2 Not Preloaded Bolts
283(9)
7.8.3 Preloaded Bolts
292(1)
7.8.4 Non-Linear Analysis of Bolts
293(3)
7.9 Internal Force Distribution
296(20)
7.9.1 General Method
296(6)
7.9.2 Bearing Surface Method to Compute Forces in Bolts
302(4)
7.9.3 Instantaneous Center of Rotation Method
306(1)
7.9.4 Examples
307(9)
7.10 Contact
316(3)
References
317(2)
8 Failure Modes
319(66)
8.1 Introduction
319(1)
8.2 Utilization Factor Concept
320(6)
8.3 About the Specifications
326(2)
8.4 Weld Layouts
328(9)
8.4.1 Generality
328(1)
8.4.2 Penetration Weld Layouts
328(4)
8.4.3 Fillet Weld Layouts
332(5)
8.5 Bolt Layouts
337(9)
8.5.1 Resistance of Bolt Shaft
337(5)
8.5.2 Sliding and Resistance of No-Slip Connections
342(3)
8.5.3 Pull-Out of Anchors, or Failure of the Anchor Block
345(1)
8.6 Pins
346(1)
8.6.1 Eurocode 3
346(1)
8.6.2 AISC 360-10
347(1)
8.7 Members and Force Transferrers
347(38)
8.7.1 Generality
347(3)
8.7.2 Local Failure Modes
350(8)
8.7.3 Fracture Failure Modes
358(15)
8.7.4 Global Failure Modes
373(9)
References
382(3)
9 Analysis: Hybrid Approach
385(66)
9.1 Introduction
385(1)
9.2 Some Basic Reminders About FEM Analysis of Plated-Structures
386(14)
9.2.1 FEM Analysis as an Engineering Tool
386(1)
9.2.2 Linear Models
387(1)
9.2.3 Linear Buckling Analysis
388(2)
9.2.4 Material Non-Linearity
390(2)
9.2.5 Geometrical Non-Linearity
392(2)
9.2.6 Contact Non-Linearity
394(2)
9.2.7 Non-Linear Analysis Control
396(4)
9.3 IRFEM
400(18)
9.3.1 Goal
400(1)
9.3.2 Hypotheses
401(1)
9.3.3 Construction
402(6)
9.3.4 Examples
408(3)
9.3.5 Results
411(2)
9.3.6 Remarks on the Use of IRFEM
413(5)
9.4 Connector Checks
418(8)
9.4.1 Weld Checks
418(1)
9.4.2 Bolt Resistance Checks
419(1)
9.4.3 Pull-Out Checks
419(1)
9.4.4 Slip Checks
419(1)
9.4.5 Prying Forces
419(7)
9.5 Cleats and Members Non-FEM Checks
426(4)
9.5.1 Action Reaction Principle
426(2)
9.5.2 Bolt Bearing
428(1)
9.5.3 Punching Shear
428(1)
9.5.4 Block Tearing
428(1)
9.5.5 Simplified Resistance Checks
429(1)
9.6 Single Constituent Finite Element Models
430(15)
9.6.1 Remarks on the Finite Element Models of Single Constituents (SCOFEM)
430(2)
9.6.2 Stiffeners
432(1)
9.6.3 Meshing
433(4)
9.6.4 Constraints
437(2)
9.6.5 Loading
439(4)
9.6.6 Members: Deciding Member-Stump-Length
443(1)
9.6.7 Compatibility Issues
444(1)
9.7 Multiple Constituents Finite Element Models (MCOFEM)
445(4)
9.7.1 Goal and Use
445(1)
9.7.2 Mesh Compatibility Between Constituents and Connector Elements
446(1)
9.7.3 Saturated Internal Bolt Layouts and Contact Non-Linearity
447(1)
9.7.4 Constraints
448(1)
9.7.5 Stabilizing Springs and Buckling of Members
448(1)
9.7.6 Need for Rechecks
449(1)
9.8 A Path for Hybrid Approach
449(2)
References
450(1)
10 Analysis: Pure FEM Approach
451(34)
10.1 Losing the Subconnector Organization
451(4)
10.2 Finite Elements for Welds
455(8)
10.2.1 Introduction
455(2)
10.2.2 Penetration Welds
457(3)
10.2.3 Fillet Welds
460(3)
10.3 Finite Elements for Bolts
463(15)
10.3.1 Introduction
463(1)
10.3.2 Bolts in Bearing: No Explicit Bolt-Hole Modeling
464(1)
10.3.3 Bolts in Bearing: Explicit Bolt-Hole Modeling
465(3)
10.3.4 Preloaded Bolts: No Explicit Bolt-Hole Modeling
468(1)
10.3.5 Preloaded Bolts: Explicit Bolt-Hole Modeling
468(1)
10.3.6 Effect of the Bending Moments in Bolt Shafts
469(1)
10.3.7 Example: A Bolted Splice Joint Using PFEM
469(9)
10.4 Loads
478(2)
10.4.1 PFEM
478(1)
10.4.2 MCOFEM
479(1)
10.5 Constraints
480(1)
10.5.1 PFEM
480(1)
10.5.2 MCOFEM
480(1)
10.6 Checking of Welds and Bolts
480(1)
10.7 Checking of Components
481(1)
10.8 Stiffness Evaluation
482(2)
10.9 Analysis Strategies
484(1)
Reference
484(1)
11 Conclusions and Future Developments
485(4)
11.1 Conclusions
485(1)
11.2 Final Acknowledgments
486(1)
11.2.1 Reasons of This Project
486(1)
11.3 Future Developments
487(2)
References
488(1)
Appendix 1 Conventions and Recalls
489(6)
A1.1 Recalls of Matrix Algebra, Notation
489(1)
A1.2 Cross-Sections
490(2)
A1.3 Orientation Matrix
492(1)
A1.4 Change of Reference System
493(1)
A1.5 Pseudocode Symbol Meaning
493(2)
Appendix 2 Tangent Stiffness Matrix of Fillet-Welds
495(8)
A2.1 Tangent Stiffness Matrix of a Weld Segment
495(4)
A2.2 Modifications for Weld Segments Using Contact
499(1)
A2.3 Tangent Stiffness Matrix of a Weld Layout for the Instantaneous Center of Rotation Method
500(3)
Appendix 3 Tangent Stiffness Matrix of Bolts in Shear
503(4)
A3.1 Tangent Stiffness Matrix of a Bolt
503(2)
A3.2 Tangent Stiffness Matrix of a Bolt Layout for the Instantaneous Center of Rotation Method
505(2)
Symbols and Abbreviations 507(6)
Index 513
PAOLO RUGARLI is a structural engineer and the principal of Castalia S.r.l., a software developer and structural engineering consultancy founded in 1991. He has developed, among others, the Sargon and CSE software packages, both of which have been used in the commercial design and analysis of steel structures for many years He also wrote several books related to structural engineering, finite element analysis and validation of software structural models.