【摘要】 岩石类材料 (包括混凝土材料 )在受拉与受压状态的弹性模量和泊松比是有明显差异的 ,本文推导了拉压弹性模量不同的矩形截面梁纯弯曲情况下弹性力学的解答。结果表明 ,不考虑拉压弹性模量的差异会引起较大误差更多还原

【Abstract】 The Young’s modulus and Poission’s ratio in uniaxial tension could be different from those in uniaxial compression for rocks and rock like materials. In this paper, the solution of pure bending of rectanglar beam with different elastic properties in tension and compression is deduced. It is shown that the analysis of rock like materials by the conventional isotropic elastic theory could lead to erroneous results. In the meanwhile, the solution in this paper could be the theory basis of measurements of some material parameters.更多还原