材料力学四种基本变形对比

材料力学是研究物体承载能力的科学，它的任务是保证既安全又经济的前提下，为构件选择合适的材料，确定合理的截面形状和尺寸，建立构件强度、刚度和稳定性的理论基础，提供必要的计算方法。这就要求对构件四种基本变形的有关知识进行对比、分析。

Comparison of the Four Basic Deformations in Mechanics of Materials

The mechanics of materials is the science researching carrying capacity of object, and its task is, on the premise of en- suring safety and cost-effectiveness, to provide necessary calcu- lating methods for the determination of the reasonable section shape and size and the establishment of theoretical basis for member strength, stiffness and stability, so as to choose appropri- ate materials for components This requires the comparison and analysis of component-related four basic knowledge of deforma-