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用数值模型来模拟和验证加卸载响应比（ＬＵＲＲＬｏａｄ／Ｕｎｌｏａｄ ＲｅｓｐｏｎｓｅＲａｔｉｏ）理论．编制非均匀各向异性材料宏细观损伤破坏程序，模拟固体材料在损伤破坏时的加卸载过程，证实了加卸载响应比理论的正确性．结果表明，ＬＵＲＲ这一反映地球介质临近破坏的指标，也可以用来预测材料的破坏．同时讨论了一些参数（如均匀程度和脆性程序）对ＬＵＲＲ的影响，发现材料越呈脆性，或越均匀，ＬＵＲＲ值上升得越晚，曲线越陡．该结果对用ＬＵＲＲ指标预测地震具有一定启发．
The numerical model is used to simulate and verify the LURRLoad / Unload ResponseRatio theory. The procedure of macroscopic and meso-damage damage of non-uniform anisotropic materials was established to simulate the loading-unloading process of solid materials under damage damage. The correctness of loading-unloading response ratio theory was verified. The results show that LURR, an indicator of the near destruction of the Earth's medium, can also be used to predict material damage. The effect of some parameters (such as uniformity and fragility program) on LURR was also discussed. The more brittle or more uniform the material, the later the LURR rose and the steeper the curve. This result has some enlightenment on predicting earthquakes by LURR index.