Elasto-Plastic Analysis of Uniform Grillages Under Lateral Load

1969 ◽  
Vol 13 (02) ◽  
pp. 103-110
Author(s):  
Thein Wah
Keyword(s):  
Finite Difference ◽  
Lateral Load ◽  
Torsional Stiffness ◽  
Collapse Mechanism ◽  
Plastic Hinges ◽  
Elastic Plastic ◽  
Initial Loading ◽  
Plastic Analysis ◽  
The Matrix

A method is presented for analyzing elastic-plastic grillages under arbitrary loads by finite difference calculus. The torsional stiffness of the beams is neglected. The introduction of two discontinuity functions representing the rotation at the plastic hinges permits a complete description of the structure from initial loading until collapse. The development of a collapse mechanism is signified by the vanishing of the determinant of the matrix of the equations determining the amount of rotation at the plastic hinges.

scholarly journals Elastic-Plastic Analysis of Plane Framed Structure by Means of the Matrix Methods

1968 ◽  
Vol 1968 (124) ◽  
pp. 193-199 ◽  
Author(s):  
Yoshiyuki Yamamoto ◽  
Katsuichi Suizu ◽  
Tohru Toshimitsu ◽  
Kunio Kokubo
Keyword(s):  
Matrix Methods ◽  
Elastic Plastic ◽  
Plastic Analysis ◽  
The Matrix

scholarly journals Elastic-Plastic Analysis of Framed Structures using the Matrix Method

1968 ◽  
Vol 1968 (124) ◽  
pp. 183-191 ◽  
Author(s):  
Yukio Ueda ◽  
Masakatsu Matsuishi ◽  
Taketo Yamakawa ◽  
Taketo Akamatsu
Keyword(s):  
Matrix Method ◽  
Framed Structures ◽  
Elastic Plastic ◽  
Plastic Analysis ◽  
The Matrix

Study on Seismic Performance of a New Multi-Layer Frame-Bent Industrial Building by Pushover Analysis

2012 ◽  
Vol 193-194 ◽  
pp. 1038-1047 ◽  
Author(s):  
Jian Guo Ding ◽  
Zhi Qiao
Keyword(s):  
Economic Development ◽  
Seismic Performance ◽  
Pushover Analysis ◽  
Longitudinal Direction ◽  
Middle Layer ◽  
Industrial Building ◽  
Plastic Hinges ◽  
Elastic Plastic ◽  
Plastic Analysis ◽  
Story Drift

With the sustainable economic development, a new multi-layer frame-bent industrial building is developed in the southeastern of China, based on a traditional bent industrial building. In this kind of structure, a framework is used in the longitudinal direction, the precast prestressed double-T plates is used in the middle layer, and the precast prestressed saddle plates is used on the roof. At present,the research achievements for this new multi-layer frame-bent industrial building under the action of earthquake .are seldom at home and abroad. In order to analyze the damaged mechanism and destroyed process on the structure of a new multi-layer frame-bent under the action of earthquake, elastic-plastic analysis of the structure must be completed. In this paper, the seismic performance of this new multi-layer frame-bent industrial building is studied by pushover analysis. The result shows that in the zone of a seismic fortification intensity as 70, both the elastic story drift under the action of frequently occurred earthquake and the elastic-plastic story drift under the action of rarely occurred earthquake for this new multi-layer frame-bent industrial building meet the requirements for the regulations of PROC;the plastic hinges appear first in the second floor, then develop to the first floor until the structure is destroyed.

scholarly journals Evaluation of collapse mechanism of telecommunication tower

2021 ◽  
Vol 39 (4) ◽  
pp. 1035-1042
Author(s):  
M. Yanda ◽  
O.S. Abejide ◽  
A. Ocholi
Keyword(s):  
Steel Structure ◽  
Wind Load ◽  
Wind Loads ◽  
Collapse Mechanism ◽  
Collapse Load ◽  
The Finite Element Method ◽  
Lower Section ◽  
Plastic Hinges ◽  
Wind Speeds ◽  
Plastic Analysis

This paper presents evaluation of a 67.12m high telecommunication tower with the objectives of applying the Finite Element Method (FEM) in modelling it, analysing it under Nigerian wind loads from five different wind zones (Zone 1, Zone 2, Zone 3 Zone 4 and Zone 5 with basic wind speeds as 42m/s, 45.8m/s, 50m/s, 55m/s and 56m/s respectively). The collapse mechanism of the tower was predicted using the Mechanism Method. The tower was modelled and wind load was calculated on it and analysis shows that there is  mechanism for the tower to collapse under dynamic wind loads as plastic hinges are developed at the joints and along bracing  members. The most severe wind load was used in the plastic analysis conducted and it shows that when the plastic hinges developed at the lower section of the tower, the three mechanisms are more critical compared to when it develops at other sections of the tower. Also, using such load as the collapse load, when the plastic hinges developed at any section of the tower, combine mechanism is more critical and hence the tower is likely to collapse due to failure of both leg members and bracing members. Key words: Collapse, Mast, Steel Structure, Analysis

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