工程力学中几个重要物理量的关系及其应用

The Relationship among Several Important Physical Quantities in Engineering Mechanics and its Application

工程力学中的弯矩、惯性矩、杨氏模量、剪应力、最大剪应力、距离、(杆)梁的半径等重要的物理量,它们之间的关系比较复杂且比较难理解.通过对这些物理量的定义及数学推导可以使他们的关系更加明晰,通过在求解梁的悬挂极限的应用,我们能更好地掌握这些物理量的关系,并解决工程科学中的力学问题.

Bending moment,inertia,Young′s modulus,the shear stress,the maximum shear stresses,distance,and a radius of beam are important physical quantities in mechanics.The relationship between these physical quantities is very complex and is very difficult to understand.This article is about the relationship between these physical quantities and the application of these relation to solve the science of mechanics problem.