Plastic Hinge Model for Performance-Based Design of Beam-Column Joints

2021 ◽  
Vol 147 (2) ◽  
pp. 04020336
Author(s):  
Hyeon-Jong Hwang ◽  
Hong-Gun Park
Keyword(s):  
Plastic Hinge ◽  
Performance Based Design ◽  
Hinge Model

scholarly journals PERFORMANCE BASED EVALUATION OF RCC BUILDING WITH DUAL SYSTEM

2020 ◽  
Vol 9 (6) ◽  
pp. 61-71
Keyword(s):  
Static Analysis ◽  
Plastic Hinge ◽  
Performance Based Design ◽  
Nonlinear Static Analysis ◽  
Building Performance ◽  
Or Methodology ◽  
Nonlinear Static ◽  
Performance Based Evaluation ◽  
Hinge Model ◽  
Story Building

Building performance is an indicator of how well a structure supports the defined needs of its users. Acceptable performance indicates acceptable (or tolerable) levels of damage or condition that allow uninterrupted facility operation. Consequently, performance-based design is the process or methodology used by design professionals to create buildings that protect functionality and the continued availability of services. In this Paper a 10 story building is designed using E-tabs software and a nonlinear static analysis is carried out using point plastic hinge model. The designed building was modelled and the hinges or possible failure locations were assigned. The stiffness of the building was increased due to the slab present and this was incorporated in the model using diaphragm. And finally the building is Evaluated as per its performance as per FEMA guidelines.

Behavior of Structures Using Simple Plastic Hinge Theory

1994 ◽  
Author(s):  
Ramakrishnan Maruthayappan ◽  
Hamid M. Lankarani
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Cantilever Beam ◽  
Reliable Method ◽  
Plastic Hinge ◽  
Element Model ◽  
Finite Element Models ◽  
Computational Program ◽  
Hinge Model ◽  
The Impact

Abstract The behavior of structures under the impact or crash situations demands an efficient modeling of the system for its behavior to be predicted close to practical situations. The various formulations that are possible to model such systems are spring mass models, finite element models and plastic hinge models. Of these three techniques, the plastic hinge theory offers a more accurate model compared to the spring mass formulation and is much simpler than the finite element models. Therefore, it is desired to model the structure using plastic hinges and to use a computational program to predict the behavior of structures. In this paper, the behavior of some simple structures, ranging from an elementary cantilever beam to a torque box are predicted. It is also shown that the plastic hinge theory is a reliable method by comparing the results obtained from a plastic hinge model of an aviation seat structure with that obtained from a finite element model.

Lateral Behavior of Precast Segmental UHPC Bridge Columns Based on the Equivalent Plastic-Hinge Model

2019 ◽  
Vol 24 (3) ◽  
pp. 04018124 ◽  
Author(s):  
Zhen Wang ◽  
Jingquan Wang ◽  
Yuchuan Tang ◽  
Yufeng Gao ◽  
Jian Zhang
Keyword(s):  
Plastic Hinge ◽  
Bridge Columns ◽  
Hinge Model ◽  
Lateral Behavior

Characterisation of Fracture and HAC Resistance of an Individual Microstructural Constituent with Micro-Cantilever Testing

2016 ◽  
Vol 713 ◽  
pp. 66-69
Author(s):  
Walter Costin ◽  
Olivier Lavigne ◽  
Andrei G. Kotousov
Keyword(s):  
Focused Ion Beam ◽  
Ion Beam ◽  
Plastic Hinge ◽  
Crack Tip Opening Displacement ◽  
Opening Displacement ◽  
Ferrous Alloys ◽  
Microstructural Constituent ◽  
Macro Scale ◽  
Micro Cantilever ◽  
Hinge Model

This paper focuses on the application of miniaturized fracture tests to evaluate the fracture and hydrogen assisted cracking (HAC) resistance of a selected microstructural constituent (acicular ferrite, AF) which only occurs in microscopic material volumes. Site-specific Focused Ion Beam (FIB) micro-machining was used to fabricate sharply notched micro-cantilevers into a region fully constituting of AF. The micro-cantilevers were subsequently tested under uncharged and hydrogen charged conditions with a nanoindenter. The load displacement curves were recorded and analysed with a simplified plastic hinge model for the uncharged specimen, as AF demonstrated an essentially ductile behaviour. The simplified model assisted with FE simulations provided values of the critical plastic crack tip opening displacement (CTOD). A value of the conditional fracture toughness was thereby determined as 12.1 MPa m1/2. With LEFM, a threshold stress intensity factor, Kth, to initiate hydrogen crack propagation in AF was found to range between 1.56 MPa m1/2 and 4.36 MPa m1/2. All these values were significantly below the corresponding values reported for various ferrous alloys in standard macro-tests. This finding indicates that the fracture and HAC resistance at the micro-scale could be very different than at the macro-scale as not all fracture toughening mechanisms may be activated at this scale level.

Numerical Modeling of RC Bridges for Seismic Risk Analysis

2016 ◽  
pp. 457-481
Author(s):  
Pedro Silva Delgado ◽  
António Arêde ◽  
Nelson Vila Pouca ◽  
Aníbal Costa
Keyword(s):  
Seismic Response ◽  
Seismic Vulnerability ◽  
Seismic Analysis ◽  
Plastic Hinge ◽  
Probabilistic Approach ◽  
Damage Model ◽  
Experimental Tests ◽  
Concrete Bridges ◽  
Seismic Risk Analysis ◽  
Hinge Model

The main purpose of this chapter is to present numerical methodologies with different complexities in order to simulate the seismic response of bridges and then use the results for the safety assessment with one probabilistic approach. The numerical simulations are carried out using three different methodologies: (i) plastic hinge model, (ii) fiber model and (iii) damage model. Seismic response of bridges is based on a simplified plane model, with easy practical application and involving reduced calculation efforts while maintaining adequate accuracy. The evaluation of seismic vulnerability is carried out through the failure probability quantification involving a non-linear transformation of the seismic action in its structural effects. The applicability of the proposed methodologies is then illustrated in the seismic analysis of two reinforced concrete bridges, involving a series of experimental tests and numerical analysis, providing an excellent set of results for comparison and global calibration.

A Comparison Between BS7448-CTOD and ASTM E1290-CTOD in Linepipes

2009 ◽  
Author(s):  
Yoichi Kayamori ◽  
Takehiro Inoue ◽  
Tetsuya Tagawa
Keyword(s):  
Brittle Fracture ◽  
Plastic Hinge ◽  
Plastic Instability ◽  
High Yield ◽  
Transformation Equation ◽  
Reasonable Accuracy ◽  
Minimum Value ◽  
Ratio Curve ◽  
Hinge Model

ASTM E1290 previously used the plastic hinge model for the calculation of CTOD, but has changed its CTOD calculation to J-based conversion since 2002. In this study, the ratio of ASTM-CTOD to BS-CTOD was analytically predicted and experimentally evaluated in linepipes. It was demonstrated that the CTOD ratio changed according to CTOD itself, and took a minimum in a CTOD ratio curve. The minimum value of the CTOD ratio was lower than 1 for low yield-to-tensile ratios, but higher than 1 for high yield-to-tensile ratios. The CTOD ratio tends to be higher than 1 for high CTOD caused by plastic instability, but around or less than 1 for low CTOD possibly caused by brittle fracture in X65 and X80. A CTOD transformation equation, which was proposed by the authors, can transform BS-CTOD into ASTM-CTOD with reasonable accuracy.

Buckle Propagation Analysis of Deep-Water Petroleum Transmission Pipelines with Axial Tension

2014 ◽  
Vol 1008-1009 ◽  
pp. 1134-1143 ◽  
Author(s):  
Sun Ting Yan ◽  
Yin Fa Zhu ◽  
Zhi Jiang Jin ◽  
Hao Ye
Keyword(s):  
Plastic Hinge ◽  
External Pressure ◽  
Isotropic Hardening ◽  
Rigid Plastic ◽  
Perfectly Plastic ◽  
Fitting Procedure ◽  
Plastic Materials ◽  
Buckle Propagation ◽  
Elastic Perfectly Plastic ◽  
Hinge Model

Quasi-static finite element simulation is carried out on buckle propagation phenomenon of offshore pipelines under external pressure. Arc-length method and volume-controlled static analysis by employing hydrostatic fluid element F3D4 are employed to calculate the steady buckle propagation pressure. After verifying the validity of numerical model, emphasis is on the influence of tension on propagation pressure considering isotropic hardening elastoplastic and elastic-perfectly plastic materials. Parametric study is conducted to include the effect of diameter-thickness ratio, after which two empirical equations are derived by curve fitting procedure. Finally, some comments on the results obtained through rigid-plastic hinge model are presented and a modified plastic hinge model including effect of material anisotropy is derived. The results can serve as a reference for more reasonable design of buckle arrestors.

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