The values -20 ksi and 12 ksi refer to the stress levels, specifically compressive and tensile stress, in the link AB. Stress is a measure of the force per unit area acting on a material, and it is an important factor in determining the strength and stability of a structure. In this case, the link AB is experiencing a combination of compressive and tensile stress, which can affect its overall performance and durability.
The diameter of the pins plays a crucial role in the stress mechanics of this system. The pins are responsible for transferring the load and forces between the link AB and the surrounding components. A larger diameter pin can distribute the stress more evenly, reducing the concentration of stress in specific areas and increasing the overall strength of the system.
The bearing stress is the stress that occurs between two contacting surfaces, in this case, the link AB and the pins. This type of stress is important because it can cause deformation and damage to the components if it exceeds the material's strength. It is crucial to consider the bearing stress in the design and selection of materials to ensure the system's integrity and longevity.
The material properties of the link AB, such as its strength, stiffness, and ductility, can significantly impact the stress levels in this system. A stronger and more rigid material can withstand higher stress levels and reduce the risk of failure, while a more ductile material can absorb more energy before reaching its breaking point. The material properties must be carefully considered in the design to ensure the system's safety and performance.
Several factors can influence the stress mechanics in this system, including the applied load, the geometry and shape of the components, the material properties, and the boundary conditions. Other factors such as temperature, corrosion, and fatigue can also affect the stress levels and should be considered in the design and maintenance of the system.