Nonlinear Static and Dynamic Analysis of Steel Structures with ...

More documents

Recommendations

Info

Chapter 1 Design of steel structures with Eurocode 3 24 13 14 15 16 17 18 Concrete in compression including grout Base plate in bending under compression Base plate in bending under tension Anchor bolts in tension Anchor bolts in shear Anchor bolts in bearing 19 Welds 20 Haunched beam Component Table 1.12: Basic joint components
2.1 Solid (continuum) elements Chapter 2 Finite Element Modeling with ABAQUS/Standard The solid (or continuum) elements can be used for linear analysis and for complex nonlinear analyses involving contact, plasticity, and large deformations. They are available for stress, heat transfer, acoustic, coupled thermal-stress, coupled pore fluid-stress, piezoelectric, and coupled thermal-electrical analyses. The ABAQUS/Standard solid element library includes first-order (linear) interpolation elements and second-order (quadratic) interpolation elements in one, two, or three dimensions. Triangles and quadrilaterals are available in two dimensions; and tetrahedra, triangular prisms, and hexahedra (―bricks‖) are provided in three dimensions. Modified second-order triangular and tetrahedral elements are also provided. In addition, reduced-integration, hybrid, and incompatible mode elements are available. Solid elements are more accurate if not distorted, particularly for quadrilaterals and hexahedra. The triangular and tetrahedral elements are less sensitive to distortion. 2.1.1 Choosing between first- and second-order elements In first-order plane strain, generalized plane strain, axisymmetric quadrilateral, hexahedral solid elements, and cylindrical elements, the strain operator provides constant volumetric strain throughout the element. This constant strain prevents mesh ―locking‖ when the material response is approximately incompressible. Second-order elements provide higher accuracy than first-order elements for ―smooth‖ problems that do not involve complex contact conditions, impact, or severe element distortions. They capture stress concentrations more effectively and are better for modeling geometric features: they can model a curved surface with fewer elements. Finally, second-order elements are very effective in bending-dominated problems. First-order triangular and tetrahedral elements should be avoided as much as possible in stress analysis problems; the elements are overly stiff and exhibit slow convergence with mesh refinement, which is especially a problem with first-order tetrahedral elements. If they are required, an extremely fine mesh may be needed to obtain results of sufficient accuracy. The ―modified‖ triangular and tetrahedral elements should be used in contact problems with the default ―hard‖ contact relationship because the contact forces are consistent with the direction of contact. These elements also perform better in analyses involving impact (because they have a lumped mass matrix), in analyses involving nearly incompressible material response, and in analyses requiring large element distortions, such as the simulation of certain manufacturing processes or the response of rubber components. 2.1.2 Choosing between full- and reduced-integration elements Reduced integration uses a lower-order integration to form the element stiffness. The mass matrix and distributed loadings use full integration. Reduced integration reduces running 25
Page 1: Δθνικό Μεηζόβιο Πο
Page 5: National Technical University of At
Page 9: Μη Γραμμική ΢ηαηικ
Page 12 and 13: 2.3.2 Discretization of contact pai
Page 14: Chapter 1 Design of steel structure
Page 17 and 18: Design of steel structures with Eur
Page 35: Design of steel structures with Eur
Page 39 and 40: Finite element modeling with ABAQUS
Page 57 and 58: Chapter 3 Static Analysis of Beam-t
Page 59 and 60: Static analysis of beam-to-column j
Page 73 and 74: 4.1 Introduction Chapter 4 Static A
Page 75 and 76: Static analysis of steel frames Cha
Page 85: 5.1 Introduction Chapter 5 Dynamic
Page 88 and 89:
Chapter 5 Dynamic analysis of steel
Page 90 and 91:
Page 92 and 93:
Page 94 and 95:
Page 96 and 97:
Page 98 and 99:
Page 101:
Chapter 5 Conclusions Detailed fin
Page 104:
[22] L.R.O. de Lima, L. Simoes da S
show all

Nonlinear Static and Dynamic Analysis of Steel Structures with ...

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?