General Expansion-Temperature Equation
Publication: Journal of Materials in Civil Engineering
Volume 11, Issue 2
Abstract
This paper presents a continuous, multilinear expression that can be used as a general expansion-temperature equation. The equation can accommodate an unlimited number of connected linear portions. Therefore, it can be easily adapted to represent the expansion behavior of materials—including those of steel, the behavior of which changes abruptly with temperature during phase transformations. Being a continuous curve, it has a major advantage over other comparable expressions, in that all the parameters in the equation can be determined simultaneously in a single curve-fitting operation. Consequently, it can be useful and powerful for characterizing test results. This paper also shows examples where the equation is fitted to experimental data obtained from various grades of structural steel. The examples show that a curve with four linear portions is sufficient to closely fit the test data. Accordingly, a model is constructed for representing the expansion-temperature behavior of structural steel. This model is also presented in this paper.
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 11 • Issue 2 • May 1999
Pages: 171 - 174
History
Received: Jan 29, 1998
Published online: May 1, 1999
Published in print: May 1999
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