Research On Numerical Simulation Of Knee Injury By Long Jump

With the development of the national economy and an increasingly strong overall national strength,China's sports undertaking has been vigorous development of track and field has become the forefront of the development project. Long jump track and field sports is one of the requirements of compulsory physical education curriculum is an exercise to enhance physical sport. It is highly technical,flexible and agile,the various parts of the body are involved in the activities of the characteristics of long jumpers and easy movement of the bone caused by injury.Integrity of the technology by the run-up of the long jump, jump, fly, landing four stages. How to improve the jump distance and avoid sports injury coaches and athletes has been the core issue of concern. Long jump in the whole process, the athlete's physical center of gravity of a parabolic trajectory is oblique movement curve. Long jump long jump take-off the impact of technology is the most critical aspect of performance, take-off so that the total center of gravity of the human body drastic changes in momentum to gain flight speed and flight angle,a certain flight speed and flight angle largely determine the long jump distance of the flight and in the long jump to a large extent determine the results. The movement of the long jump take-off at the time of the process of the body such as the ideal angle for the mechanical analysis, to be the best take-off point of view, to direct the training of science to provide a theoretical basis. Through biomechanical analysis, have been in the long process of the body's natural protection as a result of weak knee occlusion model, the knee is in the long jump at the same time each stage of an indispensable role to play. From the mechanical point of view of to do damage analysis of the knee joint form 160-degree to 175 degree angle, use ansys to do numerical simulation, and show the most intuitive out of the map. I hope we can cause enough attention in future campaigns and training to avoid the knee have a 160-degree angle,and the protection of athletes to avoid injury by bone mechanical movement,the movement to extend the life of athletes.