Fortunately, our team has obtained an elastic energy expression and established a set of nonlinear elastic equations on granular matter based on indications of Hertz contact mechanics.
有幸的是，在赫兹接触力学的提示下，本课题组找到了一个合适的弹性能表达式，并建立了一组关于颗粒物质的非线性弹性方程。
Thirdly, the contact stress equations of asymmetric gear with two pressure angles are derived by the Hertz theory of classical contact mechanics.
再次，根据经典接触力学中的赫兹理论推导了双压力角非对称齿轮的齿面接触应力计算公式；
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