Jännitysanalyysi

Jännitysanalyysi, known in English as stress analysis or tension analysis, is a field within engineering and physics that deals with the determination of the stresses and strains in a material or structure under the influence of applied forces or loads. The primary goal of jännitysanalyysi is to understand how a component or system will behave under operational conditions and to ensure its structural integrity and safety.

This analysis involves calculating the internal forces and deformations within a material. Stresses are defined as force per unit area, while strains represent the deformation or change in shape relative to the original dimensions. Jännitysanalyysi can be performed using various methods, including analytical solutions for simple geometries and loads, and numerical methods such as the finite element method (FEM) for more complex scenarios.

The results of jännitysanalyysi are crucial for design engineers. They help in selecting appropriate materials, determining the required dimensions of components, and identifying potential failure points. Understanding stress concentrations, where stresses are significantly higher than in surrounding areas, is particularly important for preventing brittle fracture or fatigue failure. Applications of jännitysanalyysi are widespread, ranging from the design of bridges and aircraft to medical implants and electronic devices. It is a fundamental tool for ensuring that engineered structures can withstand the loads they are expected to encounter throughout their service life.