In other words, the structure is delivered for construction through mechanical calculation.
Mechanics is an independent basic discipline, involving the mechanical properties of force, motion and medium (solid, liquid, gas and plasma), macro, micro and micro. It studies mechanical motion and its coupling with physical, chemical and biological motion.
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Mechanical knowledge originated from observation of natural phenomena and experience in productive labor. People use levers, ramps, pumps and other instruments in construction, irrigation and other labor, and gradually accumulate the knowledge of balancing the stress of objects. Archimedes in ancient Greece initially laid the foundation of statics, that is, equilibrium theory.
The ancients also learned some simple laws of motion, such as uniform motion and rotation, from the observation of the movement of the sun and the moon and the use of bows and arrows and wheels. However, the relationship between force and movement was gradually recognized after the Renaissance in Europe. From16th century to17th century, mechanics began to develop into an independent and systematic discipline.
On the basis of experimental research and theoretical analysis, Galileo first expounded the law of free fall, put forward the concept of acceleration, and put forward the law of inertia, which was used to explain the motion of objects and celestial bodies on the ground.
At the end of 17, Newton inherited and developed the previous research results (especially Kepler's three laws of planetary motion) and put forward three basic laws of mechanical motion, which made classical mechanics form a systematic theory.