Shock absorption (commonly known as elasticity) is the most important safety performance indicator for wholesale double tier sport flooring. It protects athletes' sports safety by weakening sports injuries through the shock absorption performance of the floor.
It is precisely because of the safety characteristics of shock absorption that it can be widely promoted. In other words, if the assembled sports floor loses its elasticity or has no shock absorption performance, it will no longer be sport safety, and will not be called anymore. Sports flooring can only be called sports ground. As can be seen, the importance of sports floor shock absorption performance.
1 shock absorption function interpretation
The shock absorption function means that the sports floor absorbs the vibration generated by the motion load force through its special elastic foaming structure, reduces the impact force of the motion, and returns the reaction force of the elastic action of the floor to realize the motion shock buffer and The reaction supply of power minimizes the degree of damage and fatigue when moving.
2 Interaction characteristics of shock absorption and energy return
After the floor is subjected to dynamic load, the floor should be effectively deformed, that is, absorb a certain impact force through its own foaming structure, reduce vibration and tremor damage, and return the energy brought by the impact to the athlete as much as possible, reducing the energy of the athlete. loss. In other words, an ideal sports floor must have energy return performance while having good shock absorption performance.
3 How to measure shock (vibration) damage?
Scientifically determined, the human pain threshold (threshold refers to the critical point):
When the exercise value is "≤260", the human body responds as "painless";
When the exercise value is "= 290", the human body will reach the critical point of pain;
When the exercise value is "≥290", the human body responds to "pain";
When the exercise value is ">340", the human body responds to "sustained pain";
Human strength: Take the normal man's weight as 75kg.
Shock absorption performance of wholesale interlocking multi-use basketball court
1. Running, the soles of the feet are gentle, and the force generated by the ground is small, equivalent to 3.5 times of their own weight, 75kg*3.5=263kg, and the pain threshold corresponding to running is painless;
2, bounce and the soles of the feet, the force generated by the ground is larger, equivalent to 4.5 times their own weight, 75kg * 4.5 = 340kg, exceeding the critical point of the pain threshold of 290kg, so the sports floor needs to absorb ≥ 15% Will reach the safe area
3, bounce and the heel landing, because the force point is small, the force generated with the ground is larger, equivalent to 5.5 times its own weight, 75kg * 5.5 = 412kg, far exceeding the critical point of the pain threshold of 290kg, so It is necessary to absorb ≥30% of the sports floor to reach the safe area;
It can be seen that different sports modes, different weights or sports groups have different requirements for sports flooring. The more intense the exercise and the higher the weight, the higher the requirements for the shock absorption performance of the floor and the higher the requirements for the quality of the floor.