Ball stud fracture analysis

Ball Head Breakdown Analysis

A ball head is a typically used machine element for rotary motion. Ball head comprise spherical surface connected to a long rod that is rotate around the axis of the rod.

The purpose of this article is to identify the primary causes of ball head breakdown and to offer effective solutions to prevent and minimize the effect of such breakdowns in future.

Let us consider the following conditions that may cause ball head breakdown:

1. Poor Maintenance: Lack of proper lubrication, improper alignment and neglecting small signs of wear in the ball head can bring out the weaker points in the ball head and eventually lead to breakdown.

2. Poorly Designed Ball Head: Ball head that are improperly designed may not withstand the usual amount of load and force applied and thus, may break down due to frequent operation at certain pressure or torque.

3. Corrosive Fluids: Constant exposure to corrosive fluids such as salt water, acids or alkalis can lead to poor performance and reduced life of the ball head thus, making them prone to break down.

In order to correctly diagnose the cause of any ball head breakdown, certain steps must be taken. Firstly, all ball heads must be thoroughly inspected for any wear or damage. Any signs of damage should be immediately repaired and the ball head must be lubricated regularly. The best lubrication method would be to grease the ball head with a grease yielding MoS2 or Teflon polymer.

The ball head must also be regularly checked for alignment and proper seating to ensure that the pressure and force are correctly distributed. Moreover, the ball head must always be inspected under load to identify any weak points that might be present after a period of use.

Finally, avoidance of any corrosive fluids and harsh environment and proper selection of engineering material for the ball head must always be taken into consideration. In case of environment containing corrosive fluids, protective coatings must be imparted to the ball head to prolong its life and prevent any wear and tear.

By following the above-mentioned guidelines, the chance of a ball head breakdown can be greatly reduced and the optimal performance of the ball head can be achieved.

In conclusion, proper maintenance and good quality design of the ball head is the key to preventing and eliminating any ball head breakdown potential. The clues mentioned above can aid in identifying the root cause of any ball head breakdown, thus leading to an expedited and efficient resolution.

Football head fracture caused by impact force is an important type of fracture mechanism in football industry. As a kind of sports game, football exchanges impact force during contact. For example, the impact force transmitted through foot when kicking, the impact force between players in the contest for the ball, and the impact force generated when header. It can be seen that during the football game, various forces have a great influence on the fracture and deformation of the football head.

The football head is a kind of big sphere, and its surface is relatively smooth. Compared with the flat force from the kicking foot, the impact force of head-on can make the surface of the football head generate different types of failure. The mostly seen kind is the straight head-on flexural fracture which mainly happens on the surface of the football head when it suffers the impact force of head-on. In this case, the impact force acted on the football head will cause great stress concentration near the head-on certain location. If the stress concentration is greatering than the strength of the football head, the football head will fracture.

In order to reduce the head fracture caused by head-on impact, the football industry has carried out two kinds of measures, namely, the improvement of materials strength and the design of football structure to change the distribution of impact force. On the one hand, improving the quality of football materials can reduce the fracture strength, and in some cases the fracture strength can be increased to ensure the safety of football playing. On the other hand, specially designed football structure can uniform the impact force to reduce the fracture strength and protect the players from the injury caused by head-on impact force.