| 摘要 |
A dual-elastic moduli method of material's load deformation curve where the primary line being very short is disclosed. The said method includes the following steps: The primary line and its elastic modulus are defined by using data-combined method and energy ratio method. After using curve-translating method, a complementary line is scribed and its elastic modulus is defined. In the said complementary line, an end point Pp of the primary line is used as a start point, and a point Pc at the top interval of the said Pp is used as an end point, and Ppc. For fragile material, the Pc point is selected between 0.5Pb and 0.55Pb, and for plastic material without yield interval, the Pc point is selected between 0.5Pp0.2 and 0.55Pp0.2. Dual Hooke's law is introduced by dual-elastic moduli method, which significantly enhances application scope and calculating precision of Hooke's law, and has good engineering application value. |
