Abstract
Several research reports agree on the influence of joint rotational behavior on the stability of space frames. One must therefore consider it in space structures study. Joint rotational behavior is generally considered in space structures study by means of its moment-rotation behavior curve. Models such as analytical, empirical, experimental, informational, mechanical and numerical mostly are used to determine joint mechanical behavior. This review paper presents an overview of available methods for the prediction of semi rigid connections behavior of under both static and dynamic loads. Advantages, disadvantages, and principal characteristics of each model stretched out. The modeling of joint behavior in studying space structures is associated with a mathematical representation model of the joint moment-rotation curve. Several models, linear, bilinear, multilinear and nonlinear representations are developed through the years to picture accurately the joints moment rotation behavior. The most precise representation applies continuous nonlinear functions, even though the multilinear representation is generally used for mechanical models. Using test data on aluminum and steel bolted connections conducted at Harbin Institute of Technology a simple stable quartic polynomial model is proposed to represent the behavior of the connections. In addition, Three others models are also proposed, including an Odd power Polynomial Model as proposed by Frye & Morris Model, a three parameter Power Model in accordance to the Kishi & Chen Model, and a four-parameter exponential model in line with the Yee & Melchers Model. These three models are compared with the simple quartic polynomial model proposed in this paper. As a result, the proposed connection design model, independent of test data, can be used directly by designers to assess semi-rigid, bolted connection behavior in Space Structures. The present work will give support to engineers for easy and accurate choice of the joint behavior prediction model and portrait correctly the behavior of the joints for best use in semi-rigid space structures construction.
Highlights
The incorporation of the effects of joint flexibility in the assessments of the structural performance of steel frame structures requires a knowledge of the connection moment-rotation M − θ characteristics
The prediction of connection behavior is the first step in designing or modeling of semi-rigid connections as structural elements and by extension in the stability analysis of Space Structures
In 1975 John Frye and Glenn Morris proposed a method in which the moment rotation behavior is formulated in terms of the polynomial function
Summary
The incorporation of the effects of joint flexibility in the assessments of the structural performance of steel frame structures requires a knowledge of the connection moment-rotation M − θ characteristics. Using this technique to model connection behavior a computer program for the maximum strength analysis of steel columns has been written based on Newton-Raphson incremental finite element approach and it incorporates features such as initial lack of straightness and spread of yield through the cross-section including the effects of residual stresses Three years later, he traced the history of research relating to the behavior of steel beam-to-column connections starting from early developments in 1917 and focused his attention on moment-rotation characteristics as this is the most important influence on the response of either individual members or complete frames. Based on no clear physical meaning as it is derived from regression analysis, called curve-fitting formulations
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
