本文以晶体结合能一般表达式U(r)=-Arm+Brn为例，分析了晶格动力学性质以及固体力学性质与晶体结合能之间的定量关系，直观地给出了原子间力常数、体弹性模量、声速、德拜温度、固体熔点以及热膨胀系数与晶体结合能之间的联系. 这有助于加深学生对固体物理教学中晶体结合能和晶格动力学的理解.

In this paper, we analyze the effect of cohesion energy in solids on the mechanical properties and the lattice dynamics by employing the general equation of cohesion energy U(r)=-Arm+Brn. The dependence of the bulk elastic modulus, force constant, velocity of sound, Debye temperature, melting temperature, and thermal expansion coefficient is given. This work can help students to better understand the relation between the lattice dynamics and the cohesion energy in studies of solid state physics.