ESDU 76016 describes a generalised method for representing a smooth stress/strain curve by an equation involving Young's modulus@ a reference stress and a characteristic index. The determination of those last two quantities is explained. The method is valid for tension or compression and provides a convenient method for accounting for the behaviour of a material beyond its elastic range@ for example in buckling calculations. The method allows simple calculation of tangent and secant modulus and Poisson's ratio but calculation of stress at a given strain or at a ratio of stress to tangent modulus is less easy. For that case approximate equations are given or an exact solution may be obtained using a Fortran program provided on disc (uncompiled) in the software volume as ESDUpac A7616. Tables list the two constants that define the compressive stress/strain curve for 29 aircraft specification materials.
76016 B-1991由ESDU - Engineering Sciences Data Unit 发布于 1991-09-01,并于 2004-05-14 实施。
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